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EN ISO 6978-1:2005

Natural gas - Determination of mercury - Part 1: Sampling of mercury by chemisorption on iodine (ISO 6978-1:2003 ) EN ISO 6978-1:2005

Publication date:   Oct 30, 2007

General information

60.60 Standard published   May 11, 2005

CEN

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

European Norm

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

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PUBLISHED
EN ISO 6978-1:2005
60.60 Standard published
May 11, 2005

Relations

Adopted from ISO 6978-1:2003 IDENTICAL