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

Current stage: 90.93 Effective date: Dec 18, 2019

Originator: ISO

Owner: ISO/TC 193/SC 1

Type: International Standard

ICS: 75.060

Languages: English French

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Status: Published

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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

Revises
ISO 6978:1992

Replaces
ISO/DIS 6978-3

NOW

PUBLISHED
ISO 6978-2:2003
90.93 Standard confirmed
Dec 18, 2019

CORRIGENDA / AMENDMENTS

Corrected by
ISO 6978-2:2003/Cor 1:2004

Corrected by
ISO 6978-2:2003/Cor 2:2006

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