JIS K 0108-2010

JAPANESE
INDUSTRIAL
STANDARD
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Translated and Published by
Japanese Standards Association

JIS K 0108

:2010

(JSAC/JSA)

Methods for determination of
hydrogen sulfide in flue gas

ICS 13.040.40 ; 71.040.40
Reference number: JIS K 0108: 2010 (E)

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24 S


K 0108 : 2010

Date of Establishment: 1967-09-01
Date of Revision: 2010-05-20
Date of Public Notice in Official Gazette: 2010-05-20
Investigated by: Japanese Industrial Standards Committee

Standards Board
Technical Committee on Environment and
Recycling Policy

JIS K 0108:2010, First English edition published in 2011-11

Translated and published by: Japanese Standards Association
4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN
In the event of any doubts arising as to the contents,
the original JIS is to be the final authority.
© JSA 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or
utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.

Printed in Japan
NH/AT
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K 0108: 2010

Contents

Page

1

Scope················································· ...................................................... ···················1

2

Normative references ...................................................... ········································1

3

Terms and definitions ............................................................................................. 2

4

General matters ...................................................... ·················································2

5

Types and summaries of analysis methods ...................................................... ···3

6
6.1
6.2
6.3

Method of sampling gas ...................................................... ····································4
Sampling position ...................................................... ··············································4
Sampling gas apparatus and instrument ...................................................... ······4
Constitution of gas sampling apparatus and sampling procedure ···················4

7

Sample gas sampling procedure and preparation of sample solutions
for analysis ............................................................................................................. 14
In the case of gas chromatography ...................................................... ···············14
In the case of methylene blue absorptiometry and ion selective
electrode method···································································································· 14

7.1
7.2
8
8.1
8.2
8.3

Gas chromatograph ...................................................... ·········································14
Summary··············································· ...................................................... ············14
Reagents and gas ................................................................................................... 14
Apparatus and instruments ................................................................................. 15

8.4
8.5
8.6
8.7

Introduction of sample gas for analysis into gas chromatography ················17
Operation conditions of gas chromatograph ...................................................... 17
Determination procedure ...................................................... ································19
Preparation of working curve··· ........................................................................... 19

8.8

Calculation of hydrogen sulfide concentration ··················································19

9
9.1
9.2
9.3
9.4
9.5

Methylene blue absorptiometry ...................................................... ·····················20
Reagents and preparation of reagent solutions ················································20
Apparatus and instrument ...................................................... ·····························23
Determination procedure ...................................................... ································23
Preparation of working curve ...................................................... ························23
Calculation of hydrogen sulfide concentration .................................................. 23

10
10.1
10.2
10.3

Ion selective electrode method ...................................................... ·······················24
Reagents and preparation of reagent solutions ················································24
Apparatus and instruments ...................................................... ···························25
Determination procedure ...................................................... ································25
lOA Preparation of working curve ...................................................... ························26
10.5 Calculation of hydrogen sulfide concentration .................................................. 26

(i)
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K 0108 : 2010
11

Record of analysis results ·...................... · .......................... ·.......................... ·······28

Annex A (informative) Silver nitrate potentiometric titration ................................ 29
Annex B (informative) Sulfur dioxide conversion ultraviolet ray fluorescent
method ...................................................... ·······························34

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Annex C (informative) Detecting tube method .......................................................... 38

(ii)
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K 0108: 2010

Foreword
This translation has been made based on the original Japanese Industrial Standard
revised by the Minister of Economy, Trade and Industry through deliberations at
the Japanese Industrial Standards Committee as the result of proposal for revision
of Japanese Industrial Standard submitted by The Japan Society For Analytical
Chemistry (JSAC)/Japanese Standards Association (JSA) with the draft being attached,
based on the provision of Article 12 Clause 1 of the Industrial Standardization Law

applicable to the case of revision by the provision of Article 14.
Consequently JIS K 0108: 1983 is replaced with this Standard.
This JIS document is protected by the Copyright Law.
Attention is drawn to the possibility that some parts of this Standard may conflict
with a patent right, application for a patent after opening to the public, utility model
right or application for registration of utility model after opening to the public which
have technical properties. The relevant Minister and the Japanese Industrial Standards
Committee are not responsible for identifying the patent right, application for a patent
after opening to the public, utility model right or application for registration of utility
model after opening to the public which have the said technical properties.

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(iii)
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JAPANESE INDUSTRIAL STANDARD

JIS K 0108 : 2010

1 Scope
This Japanese Industrial Standard specifies the methods for determination of
hydrogen sulfide in flue gas which is generated by combustion or chemical reaction or
the like, and exhausted into flue, chimney, duct, etc.

Warning: Persons performing analysis based on this Standard should be familiar with normal laboratory practice. This Standard does not purport
to address all of the safety problems, if any, associated with its use.
It is the responsibility of the user to establish appropriate safety and
health practices.

2 Norma ti ve references
The following standards contain provisions which, through reference in this text,
constitute provisions of this Standard. For standards with the year indication, only
the editions of the indicated year shall be applied and the revisions (including amendments) made thereafter shall not be applied. For those without the indication of the
year, the most recent edition (including amendments) shall be applied.
JIS K 0050: 2005

General rules for chemical analysis

JIS K 0095 Methods for sampling of flue gas
JIS K 0114 General rules for gas chromatographic analysis
JIS K 0115 General rules for molecular absorptiometric analysis
JIS K 0122 General rules for ion selective electrode method
JIS K 0211

Technical terms for analytical chemistry (General part)

JIS K 0212 Technical terms for analytical chemistry (optical part)
JIS K 0213 Technical terms for analytical chemistry (Electrochemistry part)
JIS K 0214 Technical terms for analytical chemistry (Chromatography part)
JIS K 0215 Technical terms for analytical chemistry (Analytical instrument part)
JIS K 0512 Hydrogen
JIS K 0557 Water used for industrial water and wastewater analysis
JIS K 1101 Oxygen
JIS K 1105 Argon
JIS K 1107 Nitrogen
JIS K 8005 Reference materials for volumetric analysis
JIS K 8107 Disodium dihydrogen ethylenediamine tetraacetate dihydrate (Reagent)
JIS K 8142 Iron (III) chloride hexahydrate (Reagent)
JIS K 8180 Hydrochloric acid (Reagent)

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Methods for determination of hydrogen
sulfide in flue gas


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K 0108: 2010
JIS K 8193 N,N-Dimethyl-para-phenylenediammonium dichloride (Reagent)
JIS K 8295

Glycerin (Reagent)

JIS K 8576

Sodium hydroxide (Reagent)

JIS K 8625

Sodium carbonate (Reagent)

JIS K 8637

Sodium thiosulfate pentahydrate (Reagent)

JIS K 8659

Starch, soluble (Reagent)

JIS K 8913 Potassium iodide (Reagent)
JIS K 8920 Iodine (Reagent)
JIS K 8949

Sodium sulfide nonahydrate (Reagent)

JIS K 8951

Sulfuric acid (Reagent)

JIS K 8953 Zinc sulfate heptahydrate (Reagent)
JIS K 8960 Ammonium sulfate (Reagent)
JIS K 9005 Phosphoric acid (Reagent)
JIS K 9502 L(+)-Ascorbic acid (Reagent)
JIS Z 8401

Guide to the rounding of numbers

JIS Z 8808

Methods of measuring dust concentration in fZue gas

3

Terms and definitions
For the purpose of this Standard, the terms and definitions given in JIS K 0211,
JIS K 0212, JIS K 0213, JIS K 0214 and JIS K 0215 apply.
General matters

The general matters shall be as follows.

a)

General matters of chemical analysis shall be in accordance with JIS K 0050: 2005.

b)

General matters of flue gas sampling shall be in accordance with JIS K 0095.

c)

General matters of gas chromatograph shall be in accordance with JIS K 0114.

d)

General matters of absorptiometry shall be in accordance with JIS K 0115.

e)

General matters of ion selective electrode method shall be in accordance with JIS
K 0122.

D

Water to be used in analysis shall be of A3 or A4 among the classification and
qualities as specified in clause 4 of JIS K 0557 or Annex 1 of JIS K 0050: 2005,
or any water equivalent to these.

g)

Reagents to be used shall be of the highest grade or of an appropriate quality as
specified in a relevant Japanese Industrial Standard, if applicable. If the reagent
does not have a relevant specification in Japanese Industrial Standard, that of a
quality adequate for the analysis shall be used.

h)

Apparatus and instrument to be used shall be provided with the specified functions.

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K 0108: 2010
i)

5

When disposing flue gas, or absorbing solution of the flue gas used for the analysis of hydrogen sulfide, it shall be done with utmost care.

Types and summaries of analysis methods
The types and summaries of analysis methods are as shown in table 1.

Table 1
Analysis

method

Gas chromatography
(see clause 8)

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Methylene
blue absorptiometry
(see clause 9)

Ion selective
electrode
method
(see clause 10)

Notes

Type and summary of analysis methods a)
Summary of analysis method

Outline

Sampling

Determina tion
range b)

Flue gas is introduced
into gas chromatograph and separated

by packed column or
capillary column, then
hydrogen sulfide is
determined from the
chromatogram
obtained by the
detector.

The syringe
method, gas
sampling bag
method, gas
collecting bottle
method or gas
collecting can
method.

In the case of
sample introduction amount
100 f-tl:

(Gas sampler)

After flue gas is
allowed to be absorbed
in the absorbing solution, the absorbance of
the methylene blue
generated by N,Ndimethyl-p-phenylenediammonium and iron
(III) is measured and
hydrogen sulfide is

determined.

Absorbing
bottle method

1. 7 vol ppm to
6.9 vol ppm
(volume concentration)

(Absorbing bottle of sample
gas)

After flue gas is
allowed to be absorbed
in the absorbing solution, potential difference is measured by
means of an ion selective electrode and
hydrogen sulfide is
determined.

Absorbing
bottle method

Sampling
amount of
sample gas:
about 1 ml to
1L

Absorbing
solutions:

in accordance
with 6.3.2.3 a)

Sampling of sample gas

In the case of analyzing
immediately after sampling:
a gas sampling syringe made
Thermal conduc- of hard glass, 1 ml to 5 ml in
capacity, or a gas sample
tivity detector:
introducing apparatus
200 vol ppm to
attached to the apparatus,
20 vol %
etc. is used.
Flame photoIn the case of transferring to
metric detector:
analysis room after sampling:
0.2 vol ppm to
a gas sampling bag 1 L or
50 vol ppm
over in capacity or a gas
Atomic emission
collecting bottle 1 L or over
detector:
in capacity is used.
0.05 vol ppm to
50 vol ppm

In the case of sampling
amount of sample gas 1 L or
over: two absorbing bottles as
shown in figure 4 are used.
In the case of sampling
amount of sample gas less
than 1 L: one absorbing
bottle as shown in figure 6 is
used.

Sampling
amount of
sample gas:
1 L to 20 L
0.01 vol ppm to
1000 vol ppm

Absorbing
solution:
in accordance
with 6.3.2.3 b)
Sampling
amount of
sample gas:
1 L to 20 L

(Gas sampler)
In the case of sampling
amount of sample gas 1 L or
over: two absorbing bottles as

shown in figure 4 are used.
In the case of sampling
amount of sample gas less
than 1 L: one absorbing
bottle as shown in figure 6 is
used.

a)

In addition to the methods in this table, there are the silver nitrate potentiometry (Annex A),
sulfuric dioxide conversion ultraviolet ray fluorescent method (Annex B) and detecting tube
method (Annex C).

b)

For the purpose of knowing the approximate concentration of hydrogen sulfide, a detecting
tube type hydrogen sulfide measuring apparatus (Length of stain type) or detecting tube type
and hydrogen sulfide densitometer may be used.

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K 0108: 2010
6

Method of sampling gas

6.1

Sampling position
The sampling position of sample gas shall be as follows.

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a)

For the point to sample representative gas, select a position with minimum ingress
of air or sediment of dust, where the flow of flue gas is generally uniformly rectified, and avoid any curves in the flow path or positions where sectional shape suddenly changes.

b)

Select a place where the sampling work can be safely and easily performed and if
necessary, provide a scaffold of appropriate area and height around the sampling
position.

c)

At the sampling position, provide a sampling opening into which a gas sampling
tube can be inserted approximately at right angles to the flow direction of the flue
gas.

d)

The sampling opening shall be of a material and construction such that it has
enough strength to hold the inserted gas sampling tube and thermal resistance
to endure heat up to about 120°C.

e)

The sampling opening shall be provided with a cover so that whenever the gas
sampling tube is not being inserted, incidents such as spouting of flue gas (positive pressure) or ingress of air (negative pressure) can be avoided. Further, when
opening the cover of the sampling opening, sufficient care shall be taken for the
burn and the danger due to spouting of flue gas.

6.2

Sampling gas apparatus and instrument

The sampling apparatus and instrument for sample gas shall be provided with the
following function and condition.
a)

The tube used for the gas sampling tube and tubings connecting between instruments shall be made of a material which is resistant to corrosion by hydrogen
sulfide in flue gas, e.g. borosilicate tube, silica glass tube or fluoroethylene resin
tube.

b)

In order to prevent dust from mixing into sample gas, plug the end of the sampling tube or other suitable place with filter medium (e.g. silica wool, sintered glass
filter, etc.)

c)

Tubings shall be as short as possible in order to avoid condensation of moisture,
and shall be heated to 120°C. However, where there is no possibility of condensation of moisture, heating may be omitted.

d)

The washing bottle (E) as shown in figure 1 shall be used.

e)

Set up the gas sampling apparatus and instruments at a site free from direct
sunlight.

6.3

Constitution of gas sampling apparatus and sampling procedure

The constitution of gas sampling apparatus and sampling procedure for respective
analysis methods shall be as follows.

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K 0108: 2010

6.3.1

Gas chromatography

6.3.1.1 Gas sampling apparatus and instruments
An example of the gas sampling apparatus to be used in gas chromatography is
shown in figure 1.

A: Gas sampling tube
B: Filtering material
C: Three-way cock

D: Conduit tube
E: Washing bottle [containing
50 ml of sodium hydroxide
solution (200 giL)]

A

Source of
exhaust

F: Suction pump (for replacing
of gas flow path)
G: Heater
B

Figure 1

Example of gas sampling apparatus

6.3.1.2 Reagents for washing solution
Reagents used for the washing solution of the gas sampling apparatus shall be as
follows.
a)

Sodium hydroxide, specified in JIS K 8576.

b)

Phosphoric acid, specified in JIS K 9005.

6.3.1.3 Preparation of washing solution
The preparation of washing solution shall be as follows.
a)

For the washing solution which is to be poured in washing bottle (E), sodium
hydroxide solution shall be prepared by dissolving 200 g of sodium hydroxide in
water and adding water to make total 1 L.

b)

For the washing solution which is to be used for a gas collecting container, phosphoric acid solution shall be prepared by adding water to 5.5 g of phosphoric acid
to make total 1 L.

6.3.1.4 Sample gas collecting container
In gas chromatography, the sample gas collecting container as indicated in figure 1
can be either of the following examples.
a)

In the case where the sample gas is injected into gas chromatograph immediately after sampling
1)

Gas sampling syringe, 1 ml to 5 ml in capacity and made of glass, the inside
surface of which is expected to be with minimum adsorption. It shall be cleaned
by using the phosphoric acid prepared in 6.3.1.3 b) beforehand, and washed with
water and dried.

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K 0108: 2010

In the case where the sample gas (sample in laboratory) carried to a laboratory is injected into gas chromatograph

b)

1)

Gas sampling bag, which is a bag for sampling gas 1 L or over in capacity, made
of polyester resin, fluoroethylene resin, etc. unlikely to adsorb or absorb gas components. This method is not suitable when the sample gas has to be stored for
a long time.

2)

Gas collecting bottle, which is a glass bottle of about 1 L capacity exemplified in b) 2) of figure 4 in JIS K 0095. It shall be cleaned by using the phosphoric acid prepared in 6.3.1.3 b) beforehand and then washed with water and
dried.

3)

Gas collecting can, of stainless steel, 1 L or over in capacity, of which the inside surface is electrolytically polished and inactivated by silica-coating and
provided with a shut-out cock with the inside surface of gas flow path inactivated.

6.3.1.5 Gas sampling procedure
The gas sampling procedure in the case of gas chromatography shall be as follows.
The suction pump (F) shall be operated beforehand and the gas flow path of the
gas sampling tube (A), filtering material (B), etc. shall be sufficiently replaced by sample
gas beforehand.

In the case of using gas sampling syringe Connect a gas sampling syringe
to the conduit tube (D) of the gas sampling apparatus in figure 1. Open the threeway cock (C) and after repeating the pumping of syringe to replace sufficiently the
gas in flow path, perform suction of the sample gas. Sample the gas, close the threeway cock (C), detach the gas sampling syringe and take it as the sample gas for
analysis.

b)

In the case of using gas sampling bag An example of the gas sampling apparatus using gas sampling bag is as shown in figure 2. Connect the gas sampling
bag (H) placed in the acrylic resin airtight container (I) as shown in figure 2 to
the conduit tube (D) of the gas sampling apparatus in figure 1 and open the threeway cock (C). Operate the suction pump (L) in figure 2 and suction the sample
gas by opening the shut-out cocks (J) and (K). Take the sample gas, then close
the shut-out cock (J) and the preceding three-way cock (C), stop the suction pump
(L), take out the gas sampling bag (H) from the acrylic resin airtight container
(I), seal tightly the gas sampling bag and take it as the sample gas for analysis.

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a)

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K 0108: 2010

A: Gas sampling tube
D: Conduit tube
H: Gas sampling bag
I : Acrylic resin airtight

container

J, K: Shut-out cock
L : Suction pump
M: Screw cock

Figure 2

Example of gas sampling apparatus using gas sampling bag

In the case of gas collecting bottle

c)

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1)

Method of making vacuum Connect the gas collecting bottle which has been
made vacuum according to 7.4.2 and 7.4.5 a) of JIS K 0095 as the gas collecting
container to the conduit tube (D) of gas sampling apparatus in figure 1. Open
the three-way cock (C) and the shut-out cock of gas collecting bottle and suction
the sample gas. After the sample gas is taken, close the three-way cock (C) and
the shut-out cock of the gas collecting bottle, then detach the gas collecting bottle
and take it as the sample gas for analysis.

2)

Method of replacing with sample gas Connect a gas collecting bottle between the three-way cock (C) and the washing bottle (E) of the gas sampling apparatus in figure 1. Open the three-way cock (C) and the shut-out cock of gas
collecting bottle, and absorb the sample gas in the collecting bottle by operating the suction pump (F). In this case, allow the sample gas of a volume 10 times

or over the capacity of the gas sampling tube, tubings and gas collecting bottle
to flow. After replacing the air in the bottle with sample gas, close the shut-out
cock of gas collecting bottle and the three-way cock (C), stop the suction pump
(F), then detach the gas collecting bottle and take it as the sample gas for analySIS.

d)

In the case of using gas collecting can Connect the gas collecting can which
has been made vacuum beforehand by using a pump to the conduit tube (D) of the
gas sampling apparatus in figure 1. Open the three-way cock (C) and the switching valve of gas collecting can and suction the sample gas. After suctioning the
sample gas, close the three-way cock (C) and the shut-out cock of collecting can,
then detach the gas collecting can and take it as the sample gas for analysis.

6.3.2 In the case of methylene blue absorptiometry and ion selective electrode
method
6.3.2.1 Apparatus and instruments for sampling gas
For the gas sampling apparatus and absorbing bottle in the case of methylene blue
absorptiometry and ion selective electrode method, the following shall be used depending
on the sampling amount of sample gas.

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K 0108: 2010

a)

In the case of sampling amount 1 L or over An example of gas sampling apparatus is as shown in figure 3 and an example of absorbing bottle to be used is
as shown in figure 4.

Bypass
,.--_~A,-

_ _- ,

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A: Gas sampling tube

M: Absorbing bottle

B: Filtering material

N: Trap (packed with
glass wool)

C: Three-way cock
D: Conduit tube

S: Wet gas meter

E: Washing bottle (containing 50 ml
of washing solution)

T: Thermometer

F: Suction pump (1 L/min to 5 L/min)

V: Flow rate controlling
valve (cock)

G: Heater

Figure 3

P: Manometer

Example of gas sampling apparatus

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Figure 4
Example of
absorbing
bottle


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K 0108: 2010

b)

In the case of sampling amount under 1 L An example of the gas sampling
apparatus is shown in figure 5 and an example of the absorbing bottle to be used
is shown in figure 6.

F

E

c
Source of
exhaust :::;:~::::::::::::::::::~

Inside

Q
L

A: Gas sampling tube

G: Heater

B: Filtering material

L: Absorbing bottle

C: Three-way cock

P: Injector syringe (100 ml)

E: Washing bottle (containing
50 ml of washing solution)

Q: Absorbing bottle (1 L)

F: Suction pump
NOTE:

Land Q are connected when using an absorbing bottle.

Figure 5

Example of gas sampling apparatus

Figure 6

Example of
absorbing
bottle

6.3.2.2 Reagents for absorbing solution and washing solution
In the case of methylene blue absorptiometry and ion selective electrode method,
the reagents to be used for the absorbing solution poured in the absorbing bottle of
(M) in figure 3 or (L) in figure 5 and for the washing solution poured in the washing
bottle (E) shall be as follows.
a)

Zinc sulfate heptahydrate, specified in JIS K 8953.

b)

Sodium hydroxide, specified in JIS K 8576.

c)

Ammonium sulfate, specified in JIS K 8960.

d)

Glycerin, specified in JIS K 8925.

e)

Disodium dihydrogen ethylenediamine tetraacetate dihydrate, specified in
JIS K 8107.

f)

L( + )-Ascorbic acid, specified in JIS K 9502.

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K 0108: 2010

6.3.2.3

Method for preparation of absorbing solution and washing solution

In the case of methylene blue absorptiometry and ion selective electrode method,
the absorbing solution and washing solution shall be prepared as follows.
a)

Absorbing solution for methylene blue absorptiometry Dissolve 5 g of zinc
sulfate pentahydrate in about 500 ml of water and add the solution in which 6 g
of sodium hydroxide is dissolved in about 300 ml of water. Further, add 70 g of

ammonium sulfate while stirring, and after the precipitate of zinc hydroxide is dissolved, add water to make total 1 L.

b)

Absorbing solution for ion selective electrode method After dissolving 4 g
of sodium hydroxide, 200 ml of glycerin, 4 g of disodium dihydrogen ethylenediamine tetraacetate dihydrate and 10 g of L( + )-ascorbic acid in water, add water
to make total 1 L.

c)

Washing solution for gas sampling apparatus The method for preparation
of the gas washing solution for methylene blue absorptiometry and ion selective
electrode method shall be in accordance with 6.3.1.3 a).

6.3.2.4 Sample gas sampling procedure
The sample gas sampling procedure for methylene blue absorptiometry and ion selective electrode method shall be as follows.

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a)

In the case of the sampling amount 1 L or over, prepare two absorbing bottles shown
in figure 4 and pour 50 ml of absorbing solution in each of them. In the case of
sampling amount under 1 L, prepare one absorbing bottle shown in figure 6 and
pour 10 ml of absorbing solution.

b)

In figure 3, before the sample gas is introduced, replace sufficiently the inside of
the conduit tube with sample gas by utilizing bypass, etc. When the conduit tube

for bypass can not be provided because of the restriction of space due to the circumstances of sampling site, the conduit tube for bypass may be omitted, provided
that the conduit tube (D) from the gas sampling tube (A) to the three-way cock
(C) is sufficiently replaced by sample gas.

c)

The sampling amount and suction rate of sample gas shall be in accordance with
the values specified for each method.

d)

Measure the temperature and pressure beforehand, at the same time as the measurement of sample gas amount.

6.3.2.5

Sampling amount of sample gas

The sampling amount of sample gas under the standard condition [273.15 K (0 °C),
101.32 kPa] shall be calculated as the dry-base gas amount (V SD ) or the wet-base gas
amount (Vsw ) according to formula (1) to formula (4) indicated as follows.

Calculation of dry-base gas amount

a)

1)

In the case of using wet gas meter
V

SD

= Vx 273.15
273.15+t

x

Pa +Pm -Pv +22.41x(a+b) .................. (1)
101.32

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K 0108: 2010
2)

In the case of using dry gas meter
V.

= Vx 273.15
273.15+t

SD

x

Pa +Pm +22.41x(a+b) ........................ (2)
101.32

Calculation of wet-base gas amount

b)
1)

In the case of using wet gas meter
V.

sw

2)

=Vx 273.15 x Pa + Pm - Pv + 22 .41 x (a+ b
+c) ............. . (3)
273.15+t
101.32

In the case of using dry gas meter
Vsw = Vx

where,

273.15 x Pa +Pm +22.41x(a+b+c) .................... (4)
273.15+t 101.32

VSD

:

dry-base gas amount (L)

Vsw: wet-base gas amount (L)
V: gas amount measured by the gas meter (L)

t: temperature at the gas meter (OC)

Pa: atmospheric pressure (kPa)
Pm 1): gauge pressure at the gas meter (kPa)
Pv 2): saturation vapour pressure of water at t °C (kPa)
a 1): amount of analyzer species gas collected in absorb-

ing solution (mol)
b 1): amount of other coexisting gas than the analyzer

species collected in absorbing solution (mol)
c 1): moisture amount obtained according to clause 6 of
JIS Z 8808 (mol)
273.15: absolute temperature corresponding to 0 °C (K)

101.32: standard atmospheric pressure (kPa)
22.41: volume of 1 mol of gas under the standard condition (L)
Notes

1)

Negligible in most cases.

2)

As shown in table 2.

--`,`,,,,`,``,````,``````,,,`,-`-`,,`,,`,`,,`---

PROTECTED BY COPYRIGHT


12
K 0108: 2010
Table 2

Saturation vapour pressure of water
Unit: kPa

Temperature

°C

.1

.2

0
1
2
3
4

.0
0.6105
0.6567

0.7058
0.7579
0.8134

0.6150
0.6615
0.7109
0.7633
0.8191

5
6
7
8
9

0.8723
0.9350
1.002
1.073
1.148

10
11
12
13
14

.4
0.6286

0.6759
0.7262
0.7797
0.8365

.5

.6

0.6195
0.6663
0.7159
0.7687
0.8249

.3
0.6241
0.6711
0.7210
0.7742
0.8306

0.6379
0.6858
0.7366
0.7907
0.8483

.7
0.6426

0.6907
0.7419
0.7963
0.8543

.8
0.6473
0.6958
0.7473
0.8019
0.8603

.9
0.6519
0.7007
0.7526
0.8077
0.8663

0.6333
0.6809
0.7314
0.7851
0.8423

0.8785
0.9415
1.009
1.080
1.156

0.8846
0.9481
1.016
1.087
1.164

0.8907
0.9546
1.022
1.095
1.171

0.8970
0.9611
1.030
1.102
1.179

0.9033
0.9678
1.037
1.110
1.187

0.9095
0.9745
1.044
1.117
1.195

0.9158
0.9813
1.051
1.125
1.203

0.9222
0.9881
1.058
1.132
1.211

0.9286
0.9949
1.065
1.140
1.219

1.228
1.312
1.4023
1.4973
1.598 1

1.236
1.321
1.411 6
1.5072
1.6085

1.244
1.330
1.4209
1.517 1
1.619 1

1.253
1.3388
1.4303
1.5269
1.6296

1.261
1.3478
1.4397
1.5369
1.6401

1.269
1.3567
1.4492
1.547 1
1.6508

1.278
1.3658
1.4587
1.5572
1.6615

1.286
1.3748
1.4683
1.5673
1.6723

1.295
1.3839
1.4779
1.5776
1.683 1

1.304
1.3998
1.4876
1.5879
1.6940

15
16
17
18
19

1.7049
1.817 7
1.9372
2.0634
2.1968

1.7159
1.8293
1.9494
2.0765
2.2106

1.7269
1.8410
1.9618
2.0896
2.2245

1.738 1
1.8529
1.9744
2.1028
2.2383

1.7493
1.8648
1.9869
2.1160
2.2523

1.7605
1.8766
1.9994
2.1293
2.2663

1.7719
1.8886
2.012 1
2.1426
2.2805

1.7832
1.9006
2.0249
2.1560
2.2947

1.7947
1.9128
2.0377
2.1694
2.3090

1.8061
1.9249
2.0505
2.1830
2.3234

20
21
22
23
24

2.3378
2.4865
2.6434
2.8088
2.9834

2.3523
2.5018
2.6595
2.8259
3.0014

2.3669
2.517 1
2.6758
2.8430
3.0195

2.3815
2.5326
2.6922
2.8602
3.0378

2.3963
2.5482
2.7086
2.8775
3.0560

2.4111
2.5639
2.7251
2.8950
3.0744

2.426 1
2.5797
2.7418
2.9124
3.0928

2.4410
2.5955
2.7584
2.9300
3.1113

2.456 1
2.6114
2.775 1
2.9478
3.1299

2.4713
2.6274
2.7919
2.9655
3.1485

25
26
27
28
29

3.1672
3.3609
3.5649
3.7796
4.0054

3.1860
3.3809
3.5860
3.8016
4.0286

3.2049
3.4009
3.6070
3.8237
4.0519

3.2240
3.4211
3.6282
3.8460
4.0754

3.2432
3.4413
3.6496
3.8683
4.0990

3.2625
3.4616
3.6710
3.8909
4.1227

3.2820
3.4820
3.6925
3.9135
4.1466

3.3016
3.5025
3.7141
3.9363
4.1705

3.3213
3.5232
3.7358
3.9593
4.1945

3.3411
3.5440
3.757 7
3.9823
4.2186

30
31
32
33
34

4.2429
4.4923
4.7547
5.0301
5.3193

4.2672
4.5180
4.7816
5.0585
5.3490

4.2918
4.5439
4.8087
5.0869
5.3788

4.3164
4.5698
4.8359
5.1154
5.4088

4.3411
4.5958
4.8632
5.1441
5.4390

4.3659
4.6219
4.8907
5.1730
5.4693

4.3908
4.6482
4.9184
5.2020
5.4997

4.4159
4.6745
4.9341
5.2312
5.5302

4.4412
4.7011
4.9740
5.2605
5.5609

4.4667
4.7279
5.0020
5.2898
5.5918

35
36
37
38
39

5.6229
5.9412
6.2751
6.6251
6.9917

5.6541
5.9739
6.3093
6.6609
7.0294

5.6854
6.0067
6.3437
6.6969
7.0673

5.7169
6.0396
6.3783
6.7330
7.1053

5.7485
6.0727
6.413 1
6.7693
7.1434

5.7802
6.1060
6.4480
6.8058
7.181 7

5.8122
6.1395
6.483 1
6.8425
7.2202

5.8443
6.173 1
6.5183
6.8794
7.2589

5.8766
6.2070
6.5537
6.9166
7.2977

5.9088
6.2410
6.5893
6.9541
7.3367

40
41
42
43
44

7.3759
7.778
8.199
8.639
9.101

7.414
7.819
8.242
8.685
9.147

7.454
7.861
8.285
8.730
9.195

7.494
7.902
8.329
8.775
9.243

7.534
7.943
8.373
8.821
9.291

7.574
7.986
8.417
8.867
9.339

7.614
8.029
8.461
8.914
9.387

7.654
8.071
8.505
8.961
9.435

7.695
8.114
8.549
9.007
9.485

7.737
8.157
8.594
9.054
9.534

9.633
10.14
10.67
11.22
11.79

9.682
10.19
10.72
11.27
11.85

9.731
10.24
10.78
11.33
11.91

9.781
10.29
10.83
11.39
11.97

9.831
10.35
10.88
11.45
12.03

9.882
10.40
10.94
11.50
12.09

9.933
10.45
10.99
11.56
12.15

9.983
10.51
11.05
11.62
12.21

°C

45
46
47
48
49

9.583
10.09
10.61
11.16
11.74

--`,`,,,,`,``,````,``````,,,`,-`-`,,`,,`,`,,`---

PROTECTED BY COPYRIGHT

10.03
10.56
11.10
11.68
12.27


13
K 0108: 2010

Table 2 (concluded)

12.46
13.09
13.746
14.431
15.144

.3
12.52
13.15
13.812
14.500
15.217

°C
.4
12.58
13.22

13.880
14.571
15.291

.5
12.64
13.28
13.948
14.641
15.364

.6
12.70
13.347
14.016
14.712
15.439

.7
12.77
13.412
14.084
14.784
15.513

.8
12.83
13.479
14.154
14.856

15.588

.9
12.89
13.544
14.223
14.928
15.663

15.812
16.585
17.391
18.228
19.101

15.887
16.664
17.473
18.313
19.190

15.963
16.743
17.556
18.400
19.280

16.040
16.823
17.639

18.486
19.369

16.117
16.903
17.721
18.573
19.460

16.195
16.983
17.805
18.660
19.550

16.272
17.064
17.889
18.748
19.641

16.349
17.145
17.973
18.836
19.732

16.427
17.227
18.059

18.924
19.824

19.916
20.856
21.834
22.849
23.906

20.008
20.952
21.934
22.953
24.013

20.101
21.048
22.034
23.057
24.121

20.194
21.144
22.134
23.162
24.230

20.288
21.241
22.236

23.267
24.339

20.381
21.340
22.337
23.373
24.449

20.476
21.438
22.438
23.478
24.558

20.570
21.542
22.541
23.585
24.669

20.665
21.636
22.643
23.691
24.779

20.760
21.734
22.746

23.798
24.891

65
66
67
68
69

25.003
26.143
27.326
28.554
29.828

25.115
26.259
27.447
28.679
29.959

25.227
26.376
27.568
28.806
30.090

25.339
26.494
27.690

28.932
30.220

25.453
26.611
27.812
29.059
30.352

25.567
26.728
27.935
29.186
30.484

25.682
26.847
28.058
29.314
30.617

25.797
26.966
28.180
29.442
30.751

25.911
27.086
28.304

29.570
30.884

90.054
27.206
28.428
29.699
31.017

70
71
72
73
74

31.16
32.52
33.94
35.42
36.96

31.29
32.66
34.09
35.57
37.12

31.42
32.80
34.24

35.73
37.26

31.56
32.94
34.38
35.88
37.42

31.70
33.08
34.53
36.04
37.58

31.84
33.22
34.68
36.18
37.74

31.97
33.37
34.82
36.34
37.90

32.12
33.52
34.97

36.49
38.06

32.25
33.65
35.13
36.65
38.22

32.38
33.80
35.28
36.80
38.38

75
76
77
78
79

38.54
40.18
41.88
43.64
45.46

38.70
40.36
42.05

43.82
45.65

38.86
40.52
42.22
44.00
45.84

39.04
40.69
42.40
44.18
46.02

39.20
40.86
42.57
44.36
46.21

39.36
41.02
42.76
44.54
46.40

39.53
41.20
42.93

44.73
46.58

39.69
41.37
43.10
44.90
46.77

39.85
41.54
43.29
45.09
46.96

40.02
41.72
43.46
45.28
47.16

80
81
82
83
84

47.34
49.29
51.32

53.41
55.57

47.53
49.49
51.52
53.62
55.78

47.73
49.69
51.73
53.84
56.01

47.92
49.89
51.93
54.05
56.22

48.12
50.22
52.14
54.26
56.45

48.32
50.30
52.36

54.48
56.68

48.50
50.64
52.56
54.70
56.90

48.70
50.70
52.77
54.92
57.13

48.90
50.90
52.98
55.13
57.36

49.10
51.12
53.20
55.36
57.58

85
86
87

88
89

57.81
60.12
62.49
64.94
67.47

58.04
60.34
62.73
65.19
67.73

58.26
60.58
62.97
65.45
67.99

58.49
60.82
63.21
65.69
68.25

58.73
61.06
63.46

65.94
68.51

58.96
61.29
63.70
66.19
68.78

59.18
61.53
63.95
66.45
69.03

59.42
61.77
64.19
66.70
69.30

59.65
62.01
64.45
66.97
69.57

59.89
62.25
64.69

67.22
69.70

90
91
92
93
94

70.096
72.801
75.592
78.474
81.447

70.362
73.075
75.876
78.767
81.749

70.630
73.351
76.162
79.060
82.052

70.898
73.629
76.447

79.355
82.356

71.167
73.907
76.734
79.651
82.661

71.437
74.186
77.022
79.948
82.968

71.709
74.465
77.310
80.245
83.274

71.981
74.746
77.599
80.544
83.582

72.254
75.027
77.890

80.844
83.892

72.527
75.310
78.182
81.145
84.202

95
96
97
98
99

84.513
87.675
90.935
94.295
97.757

84.825
87.997
91.266
94.636
98.109

85.138
88.319
91.598

94.979
98.463

85.452
88.643
91.931
95.323
98.816

85.766
88.967
92.266
95.667
99.172

86.082
89.293
92.602
96.012
99.528

86.400
89.619
92.939
96.359
99.885

86.717
89.947
93.276

96.707
100.24

87.036
90.275
93.615
97.056
100.60

87.355
90.605
93.954
97.407
100.96

103.89
107.64

104.26
108.02

104.63
108.40

Temperature
°C

.1

50

51
52
53
54

.0
12.33
12.96
13.611
14.292
15.000

12.39
13.02
13.678
14.361
15.072

55
56
57
58
59

15.737
16.505
17.308
18.143
19.012

60
61
62
63
64

100
101

101.32
105.00

101.69
105.37

.2

102.05
105.75

102.42
106.12

102.78
106.50

103.15
106.88

PROTECTED BY COPYRIGHT

103.52
107.26

--`,`,,,,`,``,````,``````,,,`,-`-`,,`,,`,`,,`---

Unit: kPa


14
K 0108: 2010

7 Sample gas sampling procedure and preparation of sample solutions for
analysis
7.1

In the case of gas chromatography
The gas sampling procedure shall be in accordance with 6.3.1.

7.2 In the case of methylene blue absorptiometry and ion selective electrode
method

a)

After suction of sample gas, transfer the solution in the absorbing bottle into a
200 ml volumetric flask, if the absorbing bottle in figure 4 is used, and into a 20 ml
volumetric flask, if the absorbing bottle in figure 6 is used. Wash the inside of
the absorbing bottle with absorbing solution, and join the washings to the previous volumetric flask.

b)

Add absorbing solution up to the mark and seal tightly. Take this solution as the
sample solution for analysis.

8

Gas chromatograph

Summary
Analysis is performed by using a packed column or a capillary column as a separation column and using a thermal conductivity detector, a flame photometric detector
or an atomic emission detector as a detector. The flue gas taken in 6.3.1.5 is introduced into the gas chromatograph, and hydrogen sulfide is determined from the chromatogram obtained. The determination range, when 100 ~l of sample gas is introduced,
is 200 vol ppm to 20 vol % for a thermal conductivity detector, 0.2 vol ppm to 50 vol ppm
for a flame photometric detector, 0.05 vol ppm to 50 vol ppm for an atomic emission
detector.

8.1

8.2

Reagen ts and gas
The following reagents and gas shall be used.

8.2.1

Phosphorus acid, specified in 6.3.1.2 b).

8.2.2

Helium, with purity of 99.999 vol % min. or 99.999 9 vol % min.

8.2.3

Nitrogen, of Grade 1 or Grade 2 as specified in JIS K 1107.

8.2.4 Argon, of Grade 1 or Grade 2 as specified in JIS K 1105.
8.2.5

Hydrogen, of Grade 1 to Grade 3 as specified in JIS K 0512.

8.2.6

Oxygen, with purity 99.5 vol % min. as specified in JIS K 1101.

8.2.7

High purity air, which is clean and dry.

PROTECTED BY COPYRIGHT

--`,`,,,,`,``,````,``````,,,`,-`-`,,`,,`,`,,`---

The preparation of sample solutions for analysis, after sampling the sample gas in
an absorbing bottle by means of the sample gas sampling apparatus as shown in figure 3 or figure 5 according to 6.3.2.4, shall be as follows.


15
K 0108: 2010

8.3

Apparatus and instruments
The following apparatus and instruments shall be used.

8.3.1 Sample introducing instrument of gas chromatograph
troducing instrument of gas chromatograph shall be as follows.

The sample in-

a)

Gas sampling syringe, for gas sampling apparatus, as specified in 6.3.1.4 a) 1).

b)

Gas sample introducing instrument (loop injector), composed of a measuring tube (sample loop tube) for filling a certain amount of sample gas for analysis
attached to a rotary valve made offluoroethylene resin or the like or a sliding valve,
which is capable of heating up to 150 cC. In the case of sample of low concentration, an introducing instrument in which the measuring tube and tubings have the
inner surface composed of inactivated stainless steel, fluoroethylene resin or any
other material at least equivalent to these in inactivation, so that adsorption of
gas component is minimum. An example of gas sample introducing apparatus is
shown in figure 7.
Measuring tube

Sample

Pressure
control for
injection
opening

~

--`,`,,,,`,``,````,``````,,,`,-`-`,,`,,`,`,,`---

Injection

Figure 7

Example of gas sample introducing apparatus

Connect the suction pump to the position 3 (out) shown in figure 7, and suction
the sample gas for analysis into the measuring tube. After filling the measuring
tube with the sample gas, allow the temperature and pressure of the sample gas
for analysis to stabilize, connect positions 1 and 2, positions 5 and 6 by switching
the valve, and introduce the sample gas for analysis in measuring tube into the
injection opening of the gas chromatograph.

8.3.2 Constitution of gas chromatograph
shall be as follows.

The constitution of gas chromatograph

Packed column, in accordance with the following 1), which is filled with anyone
of column packings in 2).

a)
1)

Tube for column, a tube the inside surface of which has been washed well with
acid, and after being cleansed with phosphoric acid in 6.3.1.3 b), washed with

water and dried, or a tube made of fluoroethylene resin 3).
Note

3)

When using a tube of fluoroethylene resin, make sure that the connection is without any leakage of gas.

PROTECTED BY COPYRIGHT


16
K 0108: 2010

2)

Column packing

2.1)

Distributor type packing, prepared by impregnating polymer beads of 74 ~m
to 250 ~m diameter, high purity diatomaceous earth based support or support
made of inert material 4) with an adequate stationary liquid [for example, 1,2,3tris (2-cyanoethoxy) propane] among those given in table 4 of JIS K 0114.
Note

2.2)

4)

The particles of terephthalic acid, particles of fluoroethylene resin,
etc.

Porous polymer type packing, composed of organic high polymer compound,
superior in chemical stability and mechanical strength.

1)

Tube for column, a tube based on molten silica or a tube of stainless steel of
which the inside surface is inactivated.

2)

Stationary liquid, of methyl silicone, or methyl silicone in which a part of
methyl group is replaced by another functional group (for example, phenyl group)
or polyethylene glycol.

3)

Adsorbent, composed of silicon oxide, aluminium oxide or organic high polymer
compound, superior in chemical stability and mechanical strength.
Detector, a thermal conductivity detector, a flame photometric detector or an
atomic emission detector 5).

c)

Note

5)

In some atomic emission detectors, the packed column can not be used.

d)

Carrier gas, in the case of thermal conductivity detector, helium in 8.2.2, nitrogen
in 8.2.3 or argon in 8.2.4, and in the case of the flame photometric detector, helium
in 8.2.2 or nitrogen in 8.2.3, and in the case of atomic emission detector, helium
in 8.2.2 with purity 99.999 9 vol % min.

e)

Gas for detector

The gas used for each detector shall be as follows.

1)

Addition gas for thermal conductivity detector, the same kind of gas as
the carrier gas.

2)

Flame photometric detector The gas for flame photometric detector shall
be selected from among the followings given according to each usage.

2.1)

Addition gas, helium in 8.2.2 or nitrogen in 8.2.3.

2.2)

Combustion gas, hydrogen specified in 8.2.5.

2.3)

Supporting gas, oxygen in 8.2.6 or high purity air in 8.2.7.

3)

Atomic emission detector
follows.

The gas for atomic emission detector shall be as

3.1)

Addition gas (purge gas), nitrogen in 8.2.3.

3.2)

Combustion gas (plasma gas), helium in 8.2.2, with purity of 99.999 9 vol %
mIn.

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Capillary column, composed of the column tube in 1) in the following, the inside
surface of which is chemically bonded with the stationary liquid in 2) or stabilized
with the adsorbent in 3).

b)

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K 0108: 2010
3.3)

Supporting gas, hydrogen of Grade 2 or superior in 8.2.5 and oxygen in 8.2.6,
with purity of 99.999 vol % min.

8.4

Introduction of sample gas for analysis into gas chromatograph
The introduction of sample gas for analysis into gas chromatograph shall be as follows.
a)

Introduction using gas sampling syringe When the sample gas is taken in
a gas sampling syringe in 6.3.1.5 a), attach a needle to the syringe and introduce
directly the sample gas for analysis into a gas chromatograph. When the sample
gas is taken in a gas sampling bag, gas collecting bottle or gas collecting can, seal
tightly the opening of the collecting container, with, for example, silicone rubber,
and penetrate the needle attached to the gas sampling syringe into the stopper.
Carry out the operation in 6.3.1.5 a) and introduce the sample gas taken in the
gas sampling syringe into the gas chromatograph.

b)

Introduction using gas sample introducing apparatus Connect the opening
of the gas sampling bag, a gas collecting bottle or a gas collecting can in 6.3.1.4 b)
to the sampling part of the gas sample introducing apparatus in figure 7. Open
the cock or valve of the collecting container, switch the valve of gas sample introducing apparatus and suction the sample gas by pump so as to allow the amount

of sample gas which is five times or over the capacity of the measuring tube to
pass through the measuring tube until the measuring tube is filled with the sample
gas, then switch the valve of the gas sample introducing apparatus, and introduce
the sample gas for analysis in the measuring tube into the gas chromatograph.

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In addition, connect the sample injecting opening of the gas sample introducing apparatus in figure 7 to the sample gas sampling tube (A) in figure 1, and the
sample gas may be directly introduced into a gas chromatograph.

8.5

Operation conditions of gas chromatograph

8.5.1 Conditions of sample introducing part
The optimum conditions for sample introducing part can differ depending on the
type of column and equipment to be used. The conditions, therefore, should be optimized by referring to the operation manual for respective equipments. Examples of
setting conditions are as follows.
Packed column

a)

1)

In the case of using a gas sampling syringe The packed column injection
method shall be employed. The temperature at the sample introducing part shall
be set to about 150°C.

2)

In the case of using a gas sample introducing apparatus The temperature of the gas sample introducing apparatus shall be set to about 150 °C.
Capillary column

b)

1)

In the case of using a gas sampling syringe The split injection method or
direct injection method shall be employed. The temperature at the sample introducing part shall be set to about 150°C.

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18
K 0108: 2010

In the case of using a gas sample introducing apparatus The split injection method or direct injection method shall be employed. The temperature
at the sample introducing part and the temperature of the sample introducing
apparatus shall be set to about 150°C.

2)

8.5.2

Example of operation conditions for column

The conditions for column shall be a column temperature and a carrier gas flow rate
at which the column would fully exhibit the separation performance as described in
8.3.2 a) or 8.3.2 b). Table 3 shows examples of conditions for column.

Table 3
Separation
column

Case of
condition

Packed
column

Case 1

Capillary
column

Examples of conditions for column a), b)
Packings

Col umn dimensions

Temperature of
col umn and the
rise and fall of
temperature

Carlation shall be as follows.

Calculation of sulfide ion concentration in sample solution for analysis
Calculate the concentration (A) of sulfide ion in sample solution for analysis according to the following formulae, and round it off to two significant figures
according to JIS Z 8401.

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27
K 0108: 2010

Al =

C

C

A2 = - - - - - - -

LlE

LlE2

_1

101 x lOs - 100

where,

A:

102 x lOs - 100

A3

=

C
LlE

_3

103 x lOs - 100

mean value of measured values of sulfide ion concentration in sample solution for analysis (mg/L)

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A 1 , A 2 , A3: sulfide ion concentration in sample solution for
analysis obtained by adding 0.2 ml, 0.4 ml, 0.6 ml
of the solution for sulfide ion working curve to the
sample solution for analysis (mg/L)

C: concentration of the solution for sulfide ion working curve prepared in 10.3 d) (mg/L)
i1El, i1E2, i1E3: difference between the response potential Eo obtained in 10.3 c) and response potentials E1, E2 ,
E3 obtained in 10.3 e) and 10.3 f) (i1E 1 = Eo- E 1,
AE2 = Eo - E 2, i1E3 = Eo - E 3)

S: potential slope in the vicinity of the concentration of sample solution for analysis in the working curve obtained in 10.4, and the difference of
response potential corresponding to tenfold concentration change (V)
b)

Calculation of hydrogen sulfide concentration in flue gas Calculate the hydrogen sulfide concentration in flue gas according to the following formulae.
C = 0.698 x A x V

y
V
s

C

m

where,

= 1.063 x A x V = 1.521 x C y
Vs

Cv

:

Cm

:

volume concentration of hydrogen sulfide in sample gas
(vol ppm)
mass concentration of hydrogen sulfide in sample gas
(mg/m 3 )

A: mean value of the concentration of sulfide ion in the
sample solution for analysis obtained in a) (mg/L)
V:

amount of sample solution for analysis prepared in 7.2
(ml)

v~:

sampling amount of sample gas under the standard
condition calculated in 6.3.2.5 (L)

0.698: volume of hydrogen sulfide corresponding to 1 mg of
sulfide ion (8 2 -) (ml)

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28
K 0108: 2010
1.063: mass of hydrogen sulfide corresponding to 1 mg of sulfide ion (8 2 -) (mg)
1.521: mass concentration of 1 vol ppm of hydrogen sulfide
(mg/m 3 ), (34.086/22.41)

11 Record of analysis results
The items to be recorded as analysis results shall be as follows.
a)

Name of person who performed gas sampling, and date and time of sampling

b)

Details of sampling method and preparation of analysis sample

c)

Determination method

d)

N arne of person who performed analysis, and time and date of analysis

e)

Analysis values

f)

Other matters required to be noted

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