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NA 062

DIN Standards Committee Materials Testing

Abstract

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.

Begin

2025-03-07

WI

00238101

Planned document number

prEN ISO 6978-2 rev

Responsible national committee

NA 062-05-73 AA - Gas analysis and gas quality  

Responsible european committee

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

previous edition(s)

Natural gas - Determination of mercury - Part 2: Sampling of mercury by amalgamation on gold/platinum alloy - Technical Corrigendum 2 (ISO 6978-2:2003/Cor 2:2006)
2016-10

Order from DIN Media

Natural gas - Determination of mercury - Part 2: Sampling of mercury by amalgamation on gold/platinum alloy (ISO 6978-2:2003)
2005-05

Order from DIN Media