标准摘要
[中文适用范围]： 本文件描述了通过萃取和液体闪烁计数测定非盐水中氡222 (222Rn) 活度浓度的测试方法。利用现有仪器通过该测试方法测量的 222Rn 活性浓度高于 0.5 Bq·l−1，这是 10 ml 测试样品和 1 h 测量时间的典型检测限。实验室有责任确保本测试方法对于未经测试基质的水样的有效性。附件 A 给出了满足饮用水监测所需检测限所需的计数条件的说明。 [外文原描述]： This document describes a test method for the determination of radon-222 ( 222 Rn) activity concentration in non-saline waters by extraction and liquid scintillation counting. The 222 Rn activity concentrations, which can be measured by this test method utilizing currently available instruments, are above 0,5 Bq·l −1 which is the typical detection limit for a 10 ml test sample and a measuring time of 1 h. It is the responsibility of the laboratory to ensure the validity of this test method for water samples of untested matrices. Annex A gives indication on the necessary counting conditions to meet the required detection limits for drinking water monitoring.
英文名称Water quality — Radon-222 — Part 4: Test method using two-phase liquid scintillation counting