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ISO 6978-1:2003

Natural gas — Determination of mercury — Part 1: Sampling of mercury by chemisorption on iodine

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

ISO 6978-1:2003 specifies a method for the determination of total mercury content in natural gas using a sampling method at pressures up to 40 MPa by chemisorption on iodine impregnated silica gel. This sampling method is suitable for the determination of mercury contents within the range of 0,1 microgram/m3 to 5 000 micrograms/m3 in natural gas. This method is applicable to sampled gas volumes containing less than 20 mg hydrogen sulfide and less than a total liquid hydrocarbon condensate of 10 g/m3 under the sampling conditions. The collected mercury is determined by measuring the absorbance or fluorescence of mercury vapour at 253,7 nm.

Life cycle

PREVIOUSLY

ABANDON
ISO/DIS 6978-2

WITHDRAWN
ISO 6978:1992

NOW

PUBLISHED
ISO 6978-1:2003
90.20 Standard under periodical review
Oct 15, 2024