ISO 13165-3:2016 PDF

Water quality — Radium-226 — Part 3: Test method using coprecipitation and gamma-spectrometry

Название (английский):

ISO 13165-3:2016

Water quality — Radium-226 — Part 3: Test method using coprecipitation and gamma-spectrometry

Статус документа:: Отменён
Формат:: Электронный (PDF)
Количество страниц:: 14
Дата публикации:: 8 марта 2016 г.
Издание:: ISO IS 13165 edition 1 version 1
ICS:: 13.060.60

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Описание (английский):

ISO 13165-3:2016 specifies the determination of radium-226 (226Ra) activity concentration in all types of water by coprecipitation followed by gamma-spectrometry (see ISO 18589‑3). The method described is suitable for determination of soluble 226Ra activity concentrations greater than 0,02 Bq l−1 using a sample volume of 1 l to 100 l of any water type. For water samples smaller than a volume of 1 l, direct gamma-spectrometry can be performed following ISO 10703 with a higher detection limit. NOTE This test method also allows other isotopes of radium, 223Ra, 224Ra, and 228Ra, to be determined.

Технические детали

Технический комитет: ISO/TC 147/SC 3 - Radioactivity measurements
SKU: ISO 13165-3:2016

Abstract

Overview

ISO 13165-3:2016 - Water quality - Radium-226 - Part 3 specifies a laboratory test method for determining the activity concentration of radium‑226 (226Ra) in all types of water by co‑precipitation and gamma‑spectrometry. The procedure targets the soluble fraction of radium in water and is suitable for measuring activity concentrations greater than 0.02 Bq·L−1 using sample volumes from 1 L to 100 L. The method also permits determination of other natural radium isotopes (223Ra, 224Ra, 228Ra) where applicable.

Key technical topics and requirements

Principle: Filtration to isolate the soluble fraction, acidification, co‑precipitation of radium with a barium sulfate carrier, drying/weighing of precipitate and measurement by low‑background high‑purity germanium (HPGe) gamma spectrometry. Activity is assessed via decay products (Pb‑214 and Bi‑214) once equilibrium is reached (typically ~4 weeks after co‑precipitation).
Sample volume & detection capability: Valid for 1–100 L samples; practical detection limit stated at > 0.02 Bq·L−1 for soluble 226Ra. For sample volumes

Overview

Key technical topics and requirements

Principle: Filtration to isolate the soluble fraction, acidification, co‑precipitation of radium with a barium sulfate carrier, drying/weighing of precipitate and measurement by low‑background high‑purity germanium (HPGe) gamma spectrometry. Activity is assessed via decay products (Pb‑214 and Bi‑214) once equilibrium is reached (typically ~4 weeks after co‑precipitation).
Sample volume & detection capability: Valid for 1–100 L samples; practical detection limit stated at > 0.02 Bq·L−1 for soluble 226Ra. For sample volumes

ISO 13165-3:2016 PDF

Технические детали

Abstract

Overview

Key technical topics and requirements

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Abstract

Overview

Key technical topics and requirements

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