标准摘要
[中文适用范围]： ISO 13164 的这一部分规定了通过直接伽马能谱法测量水样的短寿命衰变产物后测定水样中氡222 活度浓度的测试方法（见附录 A）。 [外文原描述]： ISO 13164-2:2013 specifies a test method for the determination of radon-222 activity concentration in a sample of water following the measurement of its short-lived decay products by direct gamma-spectrometry of the water sample. The radon-222 activity concentrations, which can be measured by this test method utilizing currently available gamma-ray instruments, range from a few becquerels per litre to several hundred thousand becquerels per litre for a 1 l test sample. This test method can be used successfully with drinking water samples. The laboratory is responsible for ensuring the validity of this test method for water samples of untested matrices. An annex gives indications on the necessary counting conditions to meet the required sensitivity for drinking water monitoring.
英文名称Water quality — Radon-222 — Part 2: Test method using gamma-ray spectrometry