BS ISO 6978-2 : 2003 AMD 16345
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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NATURAL GAS - DETERMINATION OF MERCURY - PART 2: SAMPLING OF MERCURY BY AMALGAMATION ON GOLD/PLATINUM ALLOY
15-07-2006
23-11-2012
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
7.1 Filling
7.2 Cleaning
7.3 Efficiency testing
8 Sampling
8.1 General
8.2 Conditions for representative sampling
8.3 Sampling procedure at atmospheric pressure (see Figure 1)
8.4 Sampling procedure at high pressure (see Figure 4)
8.5 Removal of condensate from discarded sampling tubes
9 Mercury determination
9.1 Transfer of mercury to the analytical tube
(double amalgamation)
9.2 Transfer of mercury to AAS or AFS instrument
9.3 Calibration
9.4 Blank test
10 Calculation
11 Precision
12 Test report
Bibliography
Defines 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 |
Supersedes BS 7678(1993) and 98/123655 DC (12/2003) Renumbered and superseded by BS EN ISO 6978-2. (07/2006)
|
| DocumentType |
Standard
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| ISO 6978-2:2003 | 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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