Reference number
ISO 19361:2017
International Standard
ISO 19361:2017
Measurement of radioactivity — Determination of beta emitters activities — Test method using liquid scintillation counting
Edition 1
2017-08
Preview
ISO 19361:2017
64698
No disponible en español
Publicado (Edición 1, 2017)

ISO 19361:2017

ISO 19361:2017
64698
Idioma
Formato
CHF 129
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Resumen

ISO 19361:2017 applies to liquid scintillation counters and requires the preparation of a scintillation source obtained by mixing the test sample and a scintillation cocktail. The test sample can be liquid (aqueous or organic), or solid (particles or filter or planchet).

ISO 19361:2017describes the conditions for measuring the activity of beta emitter radionuclides by liquid scintillation counting[14][15].

The choice of the test method using liquid scintillation counting involves the consideration of the potential presence of other beta emitter radionuclides in the test sample. In this case, a specific sample treatment by separation or extraction is implemented to isolate the radionuclide of interest in order to avoid any interference with other beta-, alpha- and gamma-emitting radionuclides during the counting phase.

ISO 19361:2017 is applicable to all types of liquid samples having an activity concentration ranging from a few Bq·l−1 to 106 Bq·l−1. For a liquid test sample, it is possible to dilute liquid test samples in order to obtain a solution having an activity compatible with the measuring instrument. For solid samples, the activity of the prepared scintillation source shall be compatible with the measuring instrument.

The measurement range is related to the test method used: nature of test portion, preparation of the scintillator - test portion mixture, measuring assembly as well as to the presence of the co-existing activities due to interfering radionuclides.

Test portion preparations (such as distillation for 3H measurement, or benzene synthesis for 14C measurement, etc.) are outside the scope of this document and are described in specific test methods using liquid scintillation[2][3][4][5][6][7][8][9].

Informaciones generales

  •  : Publicado
     : 2017-08
    : Norma Internacional para revisar [90.92]
  •  : 1
     : 20
  • ISO/TC 85/SC 2
    17.240 
  • RSS actualizaciones

Próxima versión en desarrollo

Draft
International Standard
ISO/DIS 19361
Measurement of radioactivity — Determination of beta emitters activities — Test method using liquid scintillation counting
Reference number
ISO/DIS 19361
Edition 1
Proyecto Norma internacional

ISO/DIS 19361

Measurement of radioactivity — Determination of beta emitters activities — Test method using liquid scintillation counting

ISO/DIS 19361

ISO/DIS 19361
87740
Idioma
Formato
CHF 63
Convertir Franco suizo (CHF) a tu moneda

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