ASTM D4084-07(2017)

Standard Test Method for Analysis of Hydrogen Sulfide in Gaseous Fuels (Lead Acetate Reaction Rate Method)

SIGNIFICANCE AND USE
4.1 This test method is useful in determining the concentration of hydrogen sulfide in gaseous samples and in verifying compliance with operational needs and/or environmental limitations for H2S content. The automated performance operation of this method allows unattended measurement of H2S concentration. The user is referred to Practice D7166 for unattended on-line use of instrumentation based upon the lead acetate reaction rate method.
SCOPE
1.1 This test method covers the determination of hydrogen sulfide (H2S) in gaseous fuels. It is applicable to the measurement of H2S in natural gas, liquefied petroleum gas (LPG), substitute natural gas, landfill gas, sewage treatment off gasses, recycle gas, flare gasses, and mixtures of fuel gases. This method can also be used to measure the hydrogen sulfide concentration in carbon dioxide. Air does not interfere. The applicable range is 0.1 to 16 parts per million by volume (ppm/v) (approximately 0.1 to 22 mg/m3) and may be extended to 100 % H2S by manual or automatic volumetric dilution.  
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 31-Oct-2017
• ICS: 75.160.30 - Gaseous fuels
• Technical Committee: D03 - Gaseous Fuels

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D4084 − 07 (Reapproved 2017)
Standard Test Method for
Analysis of Hydrogen Sulfide in Gaseous Fuels (Lead
1
Acetate Reaction Rate Method)
This standard is issued under the fixed designation D4084; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D7166 Practice for Total Sulfur Analyzer Based On-line/At-
line for Sulfur Content of Gaseous Fuels
1.1 This test method covers the determination of hydrogen
E2165 Practice for Establishing an Uncertainty Budget for
sulfide (H S) in gaseous fuels. It is applicable to the measure-
2
the Chemical Analysis of Metals, Ores, and Related
ment of H S in natural gas, liquefied petroleum gas (LPG),
2
3
Materials (Withdrawn 2007)
substitute natural gas, landfill gas, sewage treatment off gasses,
recycle gas, flare gasses, and mixtures of fuel gases. This
3. Summary of Test Method
method can also be used to measure the hydrogen sulfide
3.1 Measurement of H S is accomplished by ratiometrically
concentration in carbon dioxide. Air does not interfere. The 2
comparing a reading of an unknown sample with that of a
applicable range is 0.1 to 16 parts per million by volume
3
known standard using a differential colorimetric detection.
(ppm/v) (approximately 0.1 to 22 mg/m ) and may be extended
Pure H S is used as a primary standard and mixed volumetri-
to 100 % H S by manual or automatic volumetric dilution. 2
2
cally with a sulfur free matrix gas that is ideally similar in
1.2 This standard does not purport to address all of the
composition to the sample gas. A gaseous sample at constant
safety concerns, if any, associated with its use. It is the
flow is humidified and passed over lead-acetate-impregnated
responsibility of the user of this standard to establish appro-
paper. H S reacts with lead acetate to form a brown stain on the
2
priate safety, health, and environmental practices and deter-
paper. The rate of reaction and resulting rate of color change is
mine the applicability of regulatory limitations prior to use.
proportional to the concentration of H S in the sample. The
2
1.3 This international standard was developed in accor-
analyzer is comprised of an optical system, a photon detection
dance with internationally recognized principles on standard-
system, a signal differentiation system of first order, and a
ization established in the Decision on Principles for the
signal output system. When there is no change in the color of
Development of International Standards, Guides and Recom-
the tape, and no resulting change in photodetector output, E,
mendations issued by the World Trade Organization Technical
the first derivative, dE/dt, is zero. This results in an analyzer
Barriers to Trade (TBT) Committee.
that automatically zeroes when there is no H S.
2
2. Referenced Documents
4. Significance and Use
2
2.1 ASTM Standards:
4.1 This test method is useful in determining the concentra-
D1193 Specification for Reagent Water
tion of hydrogen sulfide in gaseous samples and in verifying
D1914 Practice for Conversion Units and Factors Relating to
compliance with operational needs and/or environmental limi-
Sampling and Analysis of Atmospheres
tations for H S content. The automated performance operation
2
D2420 Test Method for Hydrogen Sulfide in Liquefied
of this method allows unattended measurement of H S con-
2
Petroleum (LP) Gases (Lead Acetate Method)
centration. The user is referred to Practice D7166 for unat-
D3609 Practice for Calibration Techniques Using Perme-
tended on-line use of instrumentation based upon the lead
ation Tubes
acetate reaction rate method.
5. Apparatus
1
This test method is under the jurisdiction of ASTM Committee D03 on Gaseous
5.1 Volumetric Measuring Devices—A graduated 10-L cyl-
Fuels and is the direct responsibility of Subcommittee D03.05 on Determination of
Special Constituents of Gaseous Fuels. inder (see Fig. 1) having a movable piston for volumetrically
Current edition approved Nov. 1, 2017. Published December 2017. Originally
measuring test gas. Gastight syringes of 0.1 and 0.5-mL
approved in 1981. Last previous edition approved in 2012 as D4084 – 07(2012).
volume for volumetrically measuring 100 % H S. Gas tight
2
DOI: 10.1520/D4084-07R17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor D
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D4084 − 07 (Reapproved 2012) D4084 − 07 (Reapproved 2017)
Standard Test Method for
Analysis of Hydrogen Sulfide in Gaseous Fuels (Lead
1
Acetate Reaction Rate Method)
This standard is issued under the fixed designation D4084; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers the determination of hydrogen sulfide (H S) in gaseous fuels. It is applicable to the measurement
2
of H S in natural gas, liquefied petroleum gas (LPG), substitute natural gas, landfill gas, sewage treatment off gasses, recycle gas,
2
flare gasses, and mixtures of fuel gases. This method can also be used to measure the hydrogen sulfide concentration in carbon
dioxide. Air does not interfere. The applicable range is 0.1 to 16 parts per million by volume (ppm/v) (approximately 0.1 to 22
3
mg/m ) and may be extended to 100 % H S by manual or automatic volumetric dilution.
2
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D1193 Specification for Reagent Water
D1914 Practice for Conversion Units and Factors Relating to Sampling and Analysis of Atmospheres
D2420 Test Method for Hydrogen Sulfide in Liquefied Petroleum (LP) Gases (Lead Acetate Method)
D3609 Practice for Calibration Techniques Using Permeation Tubes
D7166 Practice for Total Sulfur Analyzer Based On-line/At-line for Sulfur Content of Gaseous Fuels
E2165 Practice for Establishing an Uncertainty Budget for the Chemical Analysis of Metals, Ores, and Related Materials
3
(Withdrawn 2007)
3. Summary of Test Method
3.1 Measurement of H S is accomplished by ratiometrically comparing a reading of an unknown sample with that of a known
2
standard using a differential colorimetric detection. Pure H S is used as a primary standard and mixed volumetrically with a sulfur
2
free matrix gas that is ideally similar in composition to the sample gas. A gaseous sample at constant flow is humidified and passed
over lead-acetate-impregnated paper. H S reacts with lead acetate to form a brown stain on the paper. The rate of reaction and
2
resulting rate of color change is proportional to the concentration of H S in the sample. The analyzer is comprised of an optical
2
system, a photon detection system, a signal differentiation system of first order, and a signal output system. When there is no
change in the color of the tape, and no resulting change in photodetector output, E, the first derivative, dE/dt, is zero. This results
in an analyzer that automatically zeroes when there is no H S.
2
4. Significance and Use
4.1 This test method is useful in determining the concentration of hydrogen sulfide in gaseous samples and in verifying
compliance with operational needs and/or environmental limitations for H S content. The automated performance operation of this
2
1
This test method is under the jurisdiction of ASTM Committee D03 on Gaseous Fuels and is the direct responsibility of Subcommittee D03.05 on Determination of
Special Constituents of Gaseous Fuels.
Current edition approved Nov. 1, 2012Nov. 1, 2017. Published December 2012December 2017. Originally approved in 1981. Last previous edition approved in 20072012
as D4084 – 07.D4084 – 07(2012). DOI: 10.1520/D4084-07R12.10.1520/D4084-07R17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page:
...