ISO 6978-2:2003
Natural gas - Determination of mercury - Part 2: Sampling of mercury by amalgamation on gold/platinum alloy
- Standard No.
- ISO 6978-2:2003
- Release Date
- 2003
- Published By
- International Organization for Standardization (ISO)
- Status
- Replace By
- ISO 6978-2:2003/cor 1:2004
- Latest
- ISO 6978-2:2003/cor 2:2006
- Scope
- This part of ISO 6978 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 μg/m
to 100 μg/m 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 μg/m to 1 μg/m . The collected mercury is determined by measuring the absorbance or fluorescence of mercury vapour at 253,7 nm. NOTE ISO 6978-1 gives a sampling method suitable for the determination of mercury contents in natural gas by chemisorption on iodine-impregnated silica gel for the working range of 0,1 μg/m to 5 000 μg/m for sampling at pressures up to 40 MPa.
ISO 6978-2:2003 Referenced Document
- ISO 10715 Natural gas — Gas sampling*， 2022-10-04 Update
- ISO 14532 Natural gas - Vocabulary*， 2014-06-01 Update
ISO 6978-2:2003 history
- 2006 ISO 6978-2:2003/cor 2:2006 Natural gas - Determination of mercury - Part 2: Sampling of mercury by amalgamation on gold/platinum alloy; Technical Corrigendum 2
- 2004 ISO 6978-2:2003/cor 1:2004 Natural gas — Determination of mercury — Part 2: Sampling of mercury by amalgamation on gold/platinum alloy TECHNICAL CORRIGENDUM 1
- 2003 ISO 6978-2:2003 Natural gas - Determination of mercury - Part 2: Sampling of mercury by amalgamation on gold/platinum alloy
