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BS EN ISO 13165-2:2022

BS EN ISO 13165-2:2022

$142.49

Water quality. Radium-226 – Test method using emanometry

Published By Publication Date Number of Pages
BSI 2022 26
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This document specifies a test method to determine radium-226 (226Ra) activity concentration in all types of water by emanometry. The test method specified is suitable for the determination of the soluble, suspended and total 226Ra activity concentration in all types of water with soluble 226Ra activity concentrations greater than 0,02 Bq l?1. The decay chains of 238U and 232Th are given in Annex A. Figure A.1 shows the 238U and its decay chain.

PDF Catalog

PDF Pages PDF Title
2 undefined
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
10 3.2 Symbols
11 4 Principle
12 5 Reagents and equipment
5.1 Reagents
5.2 Equipment
6 Sampling and storage
6.1 Sampling
13 6.2 Sample storage
7 Procedures
7.1 Sample preparation
7.2 Measurement conditions
14 7.3 Counting procedure
8 Quality assurance and quality control programme
8.1 General
8.2 Influence parameters
8.3 Instrument verification and calibration
15 8.4 Method verification
8.5 Demonstration of analyst capability
9 Expression of results
9.1 Activity concentration of water-soluble 226Ra
16 9.2 Standard uncertainty of activity concentration
9.2.1 General
9.2.2 Decision threshold
9.2.3 Detection limit
17 9.3 Limits of the coverage intervals
9.3.1 Limits of the probabilistically symmetric coverage interval
9.3.2 Shortest coverage interval
9.4 Example
18 10 Test report
20 Annex A (informative) Decay chains of 238U and 232Th
22 Annex B (informative) Bubbler
23 Annex C (informative) Glass scintillation cell coated with silver-activated zinc sulfide
24 Bibliography

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BS EN ISO 13165-2:2022
$142.49