Standard Test Method for Mercury Sampling and Measurement in Gaseous Fuels by Atomic Absorption Spectroscopy

Importancia y uso:

5.1 This test method can be used to measure the level of mercury in any gaseous fuel (as defined by Terminology D4150) for purposes such as determining compliance with regulations, studying the effect of various abatement procedures on mercury emissions, checking the validity of direct instrumental measurements, and verifying that mercury concentrations are below those required for gaseous fuel processing and operations.

5.2 Adsorption of the mercury on gold-coated sorbent can remove interferences associated with the direct measurement of mercury in the presence of high concentrations of organic compounds. It preconcentrates the mercury before analysis, thereby offering measurement of ultra-low average concentrations in a gas stream over a long time span. It avoids the cumbersome use of liquid spargers with on-site sampling and eliminates contamination problems associated with the use of potassium permanganate solutions.5^,6^,7

Subcomité:

D03.06.03

Referida por:

D6350-24

Volúmen:

05.06

Número ICS:

13.040.01 (Air quality in general), 71.040.50 (Physicochemical methods of analysis), 75.060 (Natural gas)

Palabras clave:

compressed natural gas (CNG); gaseous fuels; mercury sampling; natural gas; renewable natural gas (RNG);