09/30196542 DC : 0

Superseded

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BS ISO 9698 - WATER QUALITY - DETERMINATION OF TRITIUM ACTIVITY CONCENTRATION - LIQUID SCINTILLATION COUNTING METHOD

Available format(s)

Hardcopy , PDF

Superseded date

31-03-2011

Language(s)

English

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Symbols, definitions and units
4 Principle
5 Reagents and equipment
  5.1 Reagents
  5.2 Equipment
6 Sampling and samples
  6.1 Sampling
  6.2 Sample storage
7 Procedure
  7.1 Sample preparation
  7.2 Preparation of the sources to be measured
  7.3 Counting procedure
8 Expression of results
  8.1 Calculation of activity concentration
  8.2 Decision threshold
  8.3 Detection limit
  8.4 Confidence interval limits
  8.5 Calculations using the activity per unit of mass
9 Test report
Annex A (informative) - Numerical applications
Annex B (informative) - Distillation of large volume sample
Annex C (informative) - Internal standard methods
Annex D (informative) - Distillation of small volume sample
Annex E (informative) - Screening method for wet matrices
Bibliography

BS ISO 9698

Committee	EH/3
DocumentType	Draft
Pages	32
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS ISO 9698 : 2010 BS EN ISO 9698:2015

ISO/IEC 17025:2005	General requirements for the competence of testing and calibration laboratories
ISO/IEC Guide 98:1993	Guide to the expression of uncertainty in measurement (GUM)
ISO 5667-14:2014	Water quality Sampling Part 14: Guidance on quality assurance and quality control of environmental water sampling and handling
ISO 5667-3:2012	Water quality Sampling Part 3: Preservation and handling of water samples
ISO/IEC Guide 99:2007	International vocabulary of metrology Basic and general concepts and associated terms (VIM)
ISO 5667-1:2006	Water quality Sampling Part 1: Guidance on the design of sampling programmes and sampling techniques