BS EN ISO 6978-2:2005
Current
The latest, up-to-date edition.
Natural gas. Determination of mercury Sampling of mercury by amalgamation on gold/platinum alloy
Hardcopy , PDF
English
31-03-2017
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.
| 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 |
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.
| Standards | Relationship |
| NS EN ISO 6978-2 : 2005 | Identical |
| NF EN ISO 6978-2 : 2005 | Identical |
| NBN EN ISO 6978-2 : 2005 | Identical |
| ONORM EN ISO 6978-2 : 2005 AC JUN 2017 | Identical |
| NEN EN ISO 6978-2 : 2005 C2 2016 | Identical |
| I.S. EN ISO 6978-2:2005 | Identical |
| ISO 6978-2:2003 | Identical |
| EN ISO 6978-2:2005 | Equivalent |
| ISO 6978-2:2003/Cor 2:2006 | Identical |
| ISO 6978-2:2003/Cor 1:2004 | Identical |
| EN ISO 6978-2:2005/AC:2016 | Identical |
| DIN EN ISO 6978-2:2005-09 | Identical |
| UNE-EN ISO 6978-2:2006 | Identical |
| 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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