ISO 6978:1992
Withdrawn
View Superseded by
Natural gas — Determination of mercury
Hardcopy , PDF
English, French
08-20-1992
04-09-2025
Two methods are specified: method A for higher mercury content (> 0,5 µg/m^3) based on sampling at atmospheric pressure, absorption in potassium permangante solution, reduction of mercury ions, analysis by flameless atomic absorption spectrometry; method B for lower mercury content (10^- 3 µg/m^3 to 1 µg/m^3) based on sampling at atmospheric or higher pressure, adsorption on silver/gold, desorption, analysis by flameless atomic absorption spectrometry.
| Committee |
ISO/TC 193/SC 1
|
| DocumentType |
Standard
|
| Pages |
11
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| SupersededBy |
| Standards | Relationship |
| BS 7678:1993 | Identical |
| ASTM D 6350 : 2014 | Standard Test Method for Mercury Sampling and Analysis in Natural Gas by Atomic Fluorescence Spectroscopy (Withdrawn 2023) |
| ISO 4793:1980 | Laboratory sintered (fritted) filters — Porosity grading, classification and designation |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
| ISO 641:1975 | Laboratory glassware — Interchangeable spherical ground joints |
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