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prEN ISO 6978-2 rev

Natural gas — Determination of mercury — Part 2: Sampling of mercury by amalgamation on gold/platinum alloy prEN ISO 6978-2 rev

General information

10.99   New project approved   Mar 7, 2025

CEN

CEN/TC 238 Test gases, test pressures, appliance categories and gas appliance types

European Norm

Scope

This ISO 6978-2:2003 specifies a method for the determination of total mercury content of pipeline quality natural gas using a sampling method by amalgamation on gold/platinum (Au/Pt) alloy thread. This method is applicable to the sampling of raw natural gas when no condensation is present. At atmospheric pressure, this method is suitable for the determination of mercury content within the range of 0,01 microgram /m3 to 100 micrograms/m3 in natural gas samples. At higher pressures (up to 8 MPa), this sampling method is suitable for the determination of mercury contents within the range of 0,001 microgram/m3 to 1 microgram/m3. The collected mercury is determined by measuring the absorbance or fluorescence of mercury vapour at 253,7 nm.

Life cycle

PREVIOUSLY

PUBLISHED
EN ISO 6978-2:2005

PUBLISHED
EN ISO 6978-2:2005/AC:2016

NOW

IN_DEVELOPMENT
prEN ISO 6978-2 rev
10.99 New project approved
Mar 7, 2025




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