Standard

ISO 13161:2011

Sep 2011 Withdrawn

Note: Latest version: ISO 13161:2020

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Abstract

ISO 13161:2011 specifies the measurement of 210Po activity concentration by alpha spectrometry in all kinds of natural waters. The detection limit of this method depends on the volume of the sample, the counting time, the background count rate and the detection efficiency. In the case of drinking water, the analysis is usually carried out on the raw sample, without filtration or other pretreatment. If suspended material has to be removed or analysed, filtration at 0,45 µm is recommended. The analysis of the insoluble fraction requires a mineralization step that is not covered by ISO 13161:2011. In this case, the measurement is made on the different phases obtained. The final activity is the sum of all the measured activity concentrations.

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Standard from ISO
Published: September 30 2011
Withdrawn: July 31 2020
Period for objection until: September 25 2010
Edition: 1
Document type: IS
Pages
ISBN:

Publisher: ISO
Distributor: ISO
ICS: 13.060.60
ICS: 17.240
International TC: ISO/TC 147/SC 3

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Revised by: ISO 13161:2020
Adopted by: SN EN ISO 13161:2015
Adopted by: NF ISO 13161:2011

ISO 13161:2011

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ISO 13161:2011

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ISO 13161:2020

ISO 13161:2011

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