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BS ISO 4722-1:2023

BS ISO 4722-1:2023

$142.49

Water quality. Thorium 232 – Test method using alpha spectrometry

Published By Publication Date Number of Pages
BSI 2023 28
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PDF Catalog

PDF Pages PDF Title
2 National foreword
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
5 Chemical reagents and equipment
5.1 General
12 5.2 Chemical reagents
5.3 Equipment
6 Sampling, handling and storage
6.1 Sampling
13 6.2 Sample storage
7 Separation and measurement
7.1 Chemical steps
7.2 Measurement
7.2.1 Quality control
7.2.2 Chemical recovery
7.2.3 Background
14 8 Expression of results
8.1 Spectrum analysis
8.2 Calculation of activity concentration
8.3 Standard uncertainty
15 8.4 Decision threshold
8.5 Detection limit
9 Limits of coverage intervals
9.1 Limits of the probabilistically symmetric coverage interval
16 9.2 Limits of the shortest coverage interval
10 Test report
18 Annex A (informative) Chemical separation of thorium
21 Annex B (informative) Preparation of the source by electrodeposition
24 Annex C (informative) Preparation of the source by coprecipitation
26 Bibliography

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BS ISO 4722-1:2023
$142.49