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ISO 6978-2:2003

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

Publication date:   Oct 24, 2003

General information

90.20 Standard under periodical review   Oct 15, 2024

ISO

ISO/TC 193/SC 1 Analysis of natural gas

International Standard

75.060   Natural gas

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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

ABANDON
ISO/DIS 6978-3

WITHDRAWN
ISO 6978:1992

NOW

PUBLISHED
ISO 6978-2:2003
90.20 Standard under periodical review
Oct 15, 2024

CORRIGENDA / AMENDMENTS

WITHDRAWN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

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