ISO 6978-2:2003

Natural gas — Determination of mercury — Part 2: Sampling of mercury by amalgamation on gold/platinum alloy

Publication date: 24 tet 2003

General information

Current stage: 90.92 Effective date: 6 mar 2025

Originator: ISO

Owner: ISO/TC 193/SC 1

Type: International Standard

ICS: 75.060

Gjuha: anglisht frëngjisht

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Statusi: Publikuar

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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

WITHDRAWN
ISO 6978:1992

ABANDON
ISO/DIS 6978-3

NOW

PUBLISHED
ISO 6978-2:2003
90.92 Standard to be revised
6 mar 2025

CORRIGENDA / AMENDMENTS

WITHDRAWN
ISO 6978-2:2003/Cor 1:2004

PUBLISHED
ISO 6978-2:2003/Cor 2:2006

REVISED BY

IN_DEVELOPMENT
ISO/AWI 6978-2