09/30195759 DC : 0
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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BS ISO 11704 - WATER QUALITY - MEASUREMENT OF GROSS ALPHA AND BETA ACTIVITY CONCENTRATION IN NON-SALINE WATER - LIQUID SCINTILLATION COUNTING METHOD
Hardcopy , PDF
31-08-2015
English
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Foreword
1 Scope
2 Normative references
3 Symbols, definitions and units
4 Principle
5 Reagents and equipment
6 Sampling
7 Procedure
7.1 Direct counting
7.2 Thermal preconcentration
7.3 Sample preparation
7.4 Liquid scintillation measurement
7.4.1 Preparation of alpha and beta calibration
sources
7.4.2 Optimisation of counting conditions
7.4.3 Blank sample preparation and measurement
7.4.4 Alpha and beta efficiencies
7.4.5 Sample measurement
8 Expression of results
8.1 Calculation of activity per unit of mass
8.2 Standard uncertainty
8.3 Decision threshold
8.4 Detection limit
8.5 Confidence limits
8.6 Quality control
9 Interference control
9.1 Contamination
9.2 Losses of activity
9.2.1 Radon isotopes
9.2.2 Polonium
10 Test report
Bibliography
BS ISO 11704
| Committee |
EH/3
|
| DocumentType |
Draft
|
| Pages |
18
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| ISO/IEC 17025:2005 | General requirements for the competence of testing and calibration laboratories |
| ISO 9696:2017 | Water quality — Gross alpha activity — Test method using thick source |
| 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 |
| ASTM D 7283 : 2017 : REDLINE | Standard Test Method for Alpha and Beta Activity in Water By Liquid Scintillation Counting |
| ISO 5667-1:2006 | Water quality Sampling Part 1: Guidance on the design of sampling programmes and sampling techniques |
| UNI 11260 : 2008 | WATER QUALITY - TOTAL ALPHA AND BETA ACTIVITY DETERMINATION IN WATER INTENDED FOR HUMAN CONSUMPTION BY MEANS OF LIQUID SCINTILLATION |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
| ISO 9697:2015 | Water quality Gross beta activity in non-saline water Test method using thick source |
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