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BS EN ISO 18589-4:2021

BS EN ISO 18589-4:2021

$142.49

Measurement of radioactivity in the environment. Soil – Plutonium 238 and plutonium 239 + 240. Test method using alpha spectrometry

Published By Publication Date Number of Pages
BSI 2021 32
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This document describes a method for measuring238Pu and 239 + 240 isotopes in soil by alpha spectrometry samples using chemical separation techniques.

The method can be used for any type of environmental study or monitoring. These techniques can also be used for measurements of very low levels of activity, one or two orders of magnitude less than the level of natural alpha-emitting radionuclides.

The test methods described in this document can also be used to measure the radionuclides in sludge, sediment, construction material and products following proper sampling procedure[2][3][4][5][7][8].

The mass of the test portion required depends on the assumed activity of the sample and the desired detection limit. In practice, it can range from 0,1 g to 100 g of the test sample.

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms, definitions and symbols
10 4 Symbols
5 Principle
6 Chemical reagents and equipment
11 7 Procedure
7.1 Plutonium desorption
7.2 Chemical separation
7.3 Preparation of the source to be measured
7.3.1 General
7.3.2 Electro-deposition method
7.3.3 Co-precipitation method
7.4 Background determination
12 7.5 Measurement
8 Expression of results
8.1 Calculation of the activity per unit of mass
8.2 Standard uncertainty
13 8.3 Decision threshold
8.4 Detection limit
8.5 Confidence limits
14 9 Test report
15 Annex A (informative) Plutonium desorption
19 Annex B (informative) Chemical separation of plutonium by an organic solvent
21 Annex C (informative) Chemical separation of plutonium on anionic resin
23 Annex D (informative) Chemical separation of plutonium by specific resins
26 Annex E (informative) Preparation of the source by electro-deposition
29 Annex F (informative) Preparation of the source by co-precipitation
31 Bibliography

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BS EN ISO 18589-4:2021
$142.49