ASTM D6784 Standard Test Method for Elemental, Oxidized, Particle-Bound and Total Mercury in Flue Gas Generated from Coal-Fired Stationary Sources (Ontario Hydro Method)
ASTM D6784由燃煤固定源產生的廢氣中基本氧化顆粒粘合和總汞的標準試驗方法(Ontario Hydro 法)
The measurement of particle-bound, oxidized, elemental, and total mercury in stationary-source flue gases provides data that can be used for dispersion modeling, deposition evaluation, human health and environmental impact assessments, emission reporting, compliance determinations, etc. 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.
1. Scope
1.1 This method applies to the determination of elemental, oxidized, particle-bound, and total mercury emissions from coal-fired stationary sources.
1.2 This method is applicable to elemental, oxidized, particle-bound, and total mercury concentrations ranging from approximately 0.5 to 100 μg/Nm3.
1.3 This 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 method is applicable for 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 17.
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 assumes users are familiar with EPA stack-gas sampling procedures as stated in EPA Methods 1–4, Method 5, and Method 17.
1.8 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 and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately)
ASTM Standards
D1193 Specification for Reagent Water
D1356 Terminology Relating to Sampling and Analysis of Atmospheres
D2986 Practice for Evaluation of Air Assay Media by the Monodisperse DOP (Dioctyl Phthalate) Smoke Test
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
E1 Specification for ASTM Liquid-in-Glass Thermometers
D1356 Terminology Relating to Sampling and Analysis of Atmospheres
D2986 Practice for Evaluation of Air Assay Media by the Monodisperse DOP (Dioctyl Phthalate) Smoke Test
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
E1 Specification for ASTM Liquid-in-Glass Thermometers
Other Standards
EPAWaterandWaste600/ Methods for Chemical Analysis of Water and Wastes
Index Terms
air toxics; mercury; sampling; speciation; Air pollution/toxicity assessment; Coal-fired stationary source; Compliance testing; Deposits/deposition; Dispersion modeling; Elemental mercury; Emission monitoring; Environmental control/fate; Flue gas; Mercury; Ontario hydro method; Oxidized mercury; Particle-bound mercury; Sampling air/atmospheric materials/applications; Speciation; Total mercury;
