ASTM D6784-24
(Test Method)Standard Test Method for Elemental, Oxidized, Particle-Bound and Total Mercury in Flue Gas Generated from Coal-Fired Stationary Sources (Ontario Hydro Method)
Standard Test Method for Elemental, Oxidized, Particle-Bound and Total Mercury in Flue Gas Generated from Coal-Fired Stationary Sources (Ontario Hydro Method)
SIGNIFICANCE AND USE
5.1 The measurement of particle-bound, oxidized, elemental, and total mercury in stationary-source flue gases provides data that can be used for emissions assessments and reporting, the certification of continuous mercury monitoring systems, regulatory compliance determinations and research programs associated with dispersion modelling, deposition evaluation, human health and environmental impact assessments. Particle-bound, oxidized, and elemental mercury measurements before and after control devices may be necessary for optimizing and evaluating the mercury removal efficiency of emission control technologies.
5.2 This test method was developed initially for the measurement of mercury in coal-fired power plants and has been extensively validated for that application. Since the introduction of this method, it has been extensively used on other combustion sources such as cement kilns and waste incinerators. With additional procedures given in this standard, it is also applicable to sources having a flue gas composition with high levels of hydrochloric acid, and low levels of sulfur dioxide (Section 16).
SCOPE
1.1 This test method applies to the determination of elemental, oxidized, particle-bound, and total mercury emissions from stationary combustion sources.
1.2 This test method is applicable to elemental, oxidized, particle-bound, and total mercury concentrations ranging from approximately 0.5 μg/Nm3 to 100 μg/Nm3.
1.3 This test method describes equipment and procedures for obtaining samples from effluent ducts and stacks, equipment and procedures for laboratory analysis, and procedures for calculating results.
1.4 This test method is applicable to sampling elemental, oxidized, and particle-bound mercury in flue gases of coal-fired stationary sources. It may not be suitable at all measurement locations, particularly those with high particulate loadings, as explained in Section 16.
1.5 Method applicability is limited to flue gas stream temperatures within the thermal stability range of the sampling probe and filter components.
1.6 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
1.7 This standard requires users to be familiar with EPA stack-gas sampling procedures as stated in EPA Methods 1–4, Method 5, and Method 17.
1.8 The method requires a high level of experience and quality control both in the field testing and analytical procedures to obtain high quality data.
1.9 Warning—Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location.
1.10 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.
1.11 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.
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Standards Content (Sample)
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.
Designation: D6784 − 24
Standard Test Method for
Elemental, Oxidized, Particle-Bound and Total Mercury in
Flue Gas Generated from Coal-Fired Stationary Sources
1
(Ontario Hydro Method)
This standard is issued under the fixed designation D6784; 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 serious medical issues. Mercury, or its vapor, has been
demonstrated to be hazardous to health and corrosive to
1.1 This test method applies to the determination of
materials. Use caution when handling mercury and mercury-
elemental, oxidized, particle-bound, and total mercury emis-
containing products. See the applicable product Safety Data
sions from stationary combustion sources.
Sheet (SDS) for additional information. The potential exists
1.2 This test method is applicable to elemental, oxidized,
that selling mercury or mercury-containing products, or both,
particle-bound, and total mercury concentrations ranging from
is prohibited by local or national law. Users must determine
3 3
approximately 0.5 μg ⁄Nm to 100 μg ⁄Nm .
legality of sales in their location.
1.3 This test method describes equipment and procedures 1.10 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
for obtaining samples from effluent ducts and stacks, equip-
ment and procedures for laboratory analysis, and procedures responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
for calculating results.
mine the applicability of regulatory limitations prior to use.
1.4 This test method is applicable to sampling elemental,
1.11 This international standard was developed in accor-
oxidized, and particle-bound mercury in flue gases of coal-fired
dance with internationally recognized principles on standard-
stationary sources. It may not be suitable at all measurement
ization established in the Decision on Principles for the
locations, particularly those with high particulate loadings, as
Development of International Standards, Guides and Recom-
explained in Section 16.
mendations issued by the World Trade Organization Technical
1.5 Method applicability is limited to flue gas stream
Barriers to Trade (TBT) Committee.
temperatures within the thermal stability range of the sampling
probe and filter components.
2. Referenced Documents
2
1.6 The values stated in SI units are to be regarded as the
2.1 ASTM Standards:
standard. The values in parentheses are for information only.
D1193 Specification for Reagent Water
D1356 Terminology Relating to Sampling and Analysis of
1.7 This standard requires users to be familiar with EPA
Atmospheres
stack-gas sampling procedures as stated in EPA Methods 1–4,
D3154 Test Method for Average Velocity in a Duct (Pitot
Method 5, and Method 17.
Tube Method)
1.8 The method requires a high level of experience and
D3685/D3685M Test Methods for Sampling and Determina-
quality control both in the field testing and analytical proce-
tion of Particulate Matter in Stack Gases
dures to obtain high quality data.
D3796 Practice for Calibration of Type S Pitot Tubes
1.9 Warning—Mercury has been designated by many regu-
D4840 Guide for Sample Chain-of-Custody Procedures
latory agencies as a hazardous substance that can cause
D7036 Practice for Competence of Air Emission Testing
Bodies
1
This test method is under the jurisdiction of ASTM Committee D22 on Air
Quality and is the direct responsibility of Subcommittee D22.03 on Ambient
2
Atmospheres and Source Emissions. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved March 1, 2024. Published April 2024. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2002. Last previous edition approved in 2016 as D6784 – 16. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D6784-24. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6784 − 24
E2251 Specification for Liquid-in-Glass ASTM Thermom- 3.2.8 sample train, n—complete setup including nozzle,
eters with Low-Hazard Precision Liquids probe, probe liner, filter, filter holder, impingers, and connec-
3
tors.
2.2 Other Standards:
EPA Method 1 Sample and Velocity Traverses for Stationary
3.2.
...
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: D6784 − 16 D6784 − 24
Standard Test Method for
Elemental, Oxidized, Particle-Bound and Total Mercury in
Flue Gas Generated from Coal-Fired Stationary Sources
1
(Ontario Hydro Method)
This standard is issued under the fixed designation D6784; 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 applies to the determination of elemental, oxidized, particle-bound, and total mercury emissions from
coal-fired stationary combustion sources.
1.2 This test method is applicable to elemental, oxidized, particle-bound, and total mercury concentrations ranging from
3 3
approximately 0.50.5 μg ⁄Nm to 100 100 μg μg/Nm⁄Nm .
1.3 This test method describes equipment and procedures for obtaining samples from effluent ducts and stacks, equipment and
procedures for laboratory analysis, and procedures for calculating results.
1.4 This test method is applicable forto sampling elemental, oxidized, and particle-bound mercury in flue gases of coal-fired
stationary sources. It may not be suitable at all measurement locations, particularly those with high particulate loadings, as
explained in Section 16.
1.5 Method applicability is limited to flue gas stream temperatures within the thermal stability range of the sampling probe and
filter components.
1.6 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
1.7 This standard requires users to be familiar with EPA stack-gas sampling procedures as stated in EPA Methods 1–4, Method
5, and Method 17.
1.8 The method requires a high level of experience and quality control both in the field testing and analytical procedures in order
to obtain high quality data.
1.9 Warning—Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious
medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use caution
when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional
information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national
law. Users must determine legality of sales in their location.
1
This test method is under the jurisdiction of ASTM Committee D22 on Air Quality and is the direct responsibility of Subcommittee D22.03 on Ambient Atmospheres
and Source Emissions.
Current edition approved March 1, 2016March 1, 2024. Published June 2016April 2024. Originally approved in 2002. Last previous edition approved in 20082016 as
D6784 – 02 (2008).D6784 – 16. DOI: 10.1520/D6784-16.10.1520/D6784-24.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6784 − 24
1.10 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.
1.11 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
D1356 Terminology Relating to Sampling and Analysis of Atmospheres
D3154 Test Method for Average Velocity in a Duct (Pitot Tube Method)
D3685/D3685M Test Methods for Sampling and Determination of Particulate Matter in Stack Gases
D3796 Practice for Calibration of Type S Pitot Tubes
D4840 Guide for Sample Chain-of-Custody Procedures
D7036 Practice for Competence of Air Emission Testing Bodies
E2251 Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids
3
2.2 Other Standards:
EPA Method 1 Sample and Velocity Traverses for Stationary Sources
EPA Method 2 Determination of Stack Gas Velocity and Volumetric Flow Rate (Type S Pitot Tube)
EPA Method 3 Gas Analysis for the Determination of Dry Molecular Wei
...
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