NS EN ISO 6978-2 : 2005
Current
The latest, up-to-date edition.
NATURAL GAS - DETERMINATION OF MERCURY - PART 2: SAMPLING OF MERCURY BY AMALGAMATION ON GOLD/PLATINUM ALLOY (ISO 6978-2:2003/COR 2:2006)
12-01-2013
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
8.4 Sampling procedure at high pressure
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
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