UNE-EN ISO 13162:2016
Current
The latest, up-to-date edition.
Water quality - Determination of carbon 14 activity - Liquid scintillation counting method (ISO 13162:2011)
Hardcopy , PDF
Spanish, Castilian, English
28-09-2016
This International Standard specifies the conditions for the determination of 14C activity concentration in samples of environmental water or of 14C-containing water using liquid scintillation counting.
The method is applicable to the analysis of any organic molecule soluble in water that is well mixed with the scintillation cocktail. It does not apply to micelles or large particles (lipids, fulvic acid, humic acid, etc.) that are inadequately mixed with the scintillation cocktail and the water. Some beta energy is lost without any excitation of the scintillation cocktail and the results are underestimated. The method is not applicable to the analysis of organically bound 14C, whose determination requires additional chemical processing (such as chemical oxidation, combustion).
It is possible to determine 14C activity concentrations below 106 Bq l-ð1 without any sample dilution.
| Committee |
CTN 73
|
| DocumentType |
Standard
|
| Pages |
30
|
| PublisherName |
Asociación Española de Normalización
|
| Status |
Current
|
| Standards | Relationship |
| ISO 13162:2011 | Identical |
| EN ISO 13162:2015 | Identical |
| ISO/IEC 17025:2005 | General requirements for the competence of testing and calibration laboratories |
| ISO 5667-3:2012 | Water quality — Sampling — Part 3: Preservation and handling of water samples |
| ISO 5667-1:2006 | Water quality — Sampling — Part 1: Guidance on the design of sampling programmes and sampling techniques |
| ISO 11929:2010 | Determination of the characteristic limits (decision threshold, detection limit and limits of the confidence interval) for measurements of ionizing radiation — Fundamentals and application |
| ISO/IEC Guide 98-3:2008 | Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) |
| ISO 80000-10:2009 | Quantities and units — Part 10: Atomic and nuclear physics |
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