ISO 13160:2021

مواصفة قياسية دولية   الإصدار الحالي

Water quality — Strontium 90 and strontium 89 — Test methods using liquid scintillation counting or proportional counting

المجال

This document specifies conditions for the determination of 90Sr and 89Sr activity concentration in samples of environmental water using liquid scintillation counting (LSC) or proportional counting (PC).

The method is applicable to test samples of drinking water, rainwater, surface and ground water, marine water, as well as cooling water, industrial water, domestic, and industrial wastewater after proper sampling and handling, and test sample preparation. Filtration of the test sample and a chemical separation are required to separate and purify strontium from a test portion of the sample.

The detection limit depends on the sample volume, the instrument used, the sample count time, the background count rate, the detection efficiency and the chemical yield. The method described in this document, using currently available LSC counters, has a detection limit of approximately 10 mBq l−1 and 2 mBq l−1 for 89Sr and 90Sr, respectively, which is lower than the WHO criteria for safe consumption of drinking water (100 Bq·l−1 for 89Sr and 10 Bq·l−1 for 90Sr)[3]. These values can be achieved with a counting time of 1 000 min for a sample volume of 2 l.

The methods described in this document are applicable in the event of an emergency situation. When fallout occurs following a nuclear accident, the contribution of 89Sr to the total amount of radioactive strontium is not negligible. This document provides test methods to determine the activity concentration of 90Sr in presence of 89Sr.

The analysis of 90Sr and 89Sr adsorbed to suspended matter is not covered by this method.

It is the user’s responsibility to ensure the validity of this test method selected for the water samples tested.

إعداد
14 يوليو 2021
قياسات الإشعاع
* الحماية من الإشعاع، انظر 13.280

الملفات

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الإصدار الحالي
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المواصفات ذات العلاقة

revises
ISO 13160:2012
 
إصدار سابق
مواصفة قياسية دولية
Water quality — Strontium 90 and strontium 89 — Test methods using liquid scintillation counting or proportional counting
joined_work_item
EN ISO 13160:2021
 
مواصفة قياسية دولية
Water quality - Strontium 90 and strontium 89 - Test methods using liquid scintillation counting or proportional counting (ISO 13160:2021)

الأكثر مبيعاً

GSO 9:2013
 
لائحة فنية خليجية
بطاقات المواد الغذائية المعبأة
BH GSO 9:2015
GSO 9:2013 
لائحة فنية بحرينية
بطاقات المواد الغذائية المعبأة
GSO 150-2:2013
 
مواصفة قياسية خليجية
فترات صلاحية المنتجات الغذائية - الجزء الثاني : فترات الصلاحية الاختيارية
BH GSO 150-2:2015
GSO 150-2:2013 
مواصفة قياسية بحرينية
فترات صلاحية المنتجات الغذائية - الجزء الثاني : فترات الصلاحية الاختيارية

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