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BS EN ISO 6978-2:2005

BS EN ISO 6978-2:2005

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Natural gas. Determination of mercury Sampling of mercury by amalgamation on gold/platinum alloy

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

03-31-2017

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Reagents and materials
7 Preparation of sampling and analytical tubes
8 Sampling
9 Mercury determination
10 Calculation
11 Precision
12 Test report
Bibliography

Define 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 part of ISO6978 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 0,01µg/m 3 to 100µg/m 3 in natural gas samples. At higher pressures (up to 8MPa), this sampling method is suitable for the determination of mercury contents within the range of 0,001µg/m 3 to 1µg/m 3. The collected mercury is determined by measuring the absorbance or fluorescence of mercury vapour at 253,7nm. NOTE ISO6978‑1 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 0,1µg/m 3 to 5000µg/m 3 for sampling at pressures up to 40MPa.

Committee
PTI/15
DevelopmentNote
Renumbers and supersedes BS ISO 6978-2. 2005 Version incorporates amendment 16345 to BS ISO 6978-2. Supersedes BS 7678(1993) and 98/123655 DC. (07/2006)
DocumentType
Standard
Pages
28
PublisherName
British Standards Institution
Status
Current
Supersedes

ISO 10715:1997 Natural gas — Sampling guidelines
ISO 6978-1:2003 Natural gas Determination of mercury Part 1: Sampling of mercury by chemisorption on iodine
ISO 14532:2014 Natural gas — Vocabulary
ISO 14111:1997 Natural gas — Guidelines to traceability in analysis
ISO 641:1975 Laboratory glassware — Interchangeable spherical ground joints
ISO 6570:2001 Natural gas — Determination of potential hydrocarbon liquid content — Gravimetric methods

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Hardcopy - English
PDF - English
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