水质 钚、镅、锔和镎 α能谱法测试方法

[中文适用范围]： 本文件规定了一种通过化学分离后的α能谱法测量水样中锕系元素（238Pu、239+240Pu、241Am、242Cm、243+244Cm 和 237Np）的测试方法。在适当的取样和处理以及测试样品制备后，该方法可用于任何类型的环境研究或监测。对于0.1升至5升之间的测试部分，计数时间为2至10天，该测试方法的检测限为5 × 10−3 Bq·l-1 至 5 × 10−4 Bq·l-1。这低于世界卫生组织关于饮用水安全饮用的标准（1 Bq·l-1 或 10 Bq·l-1，取决于放射性核素）。[4]本文件中描述的方法适用于紧急情况。 [外文原描述]： This document specifies a test method for measuring actinides ( 238 Pu, 239+240 Pu, 241 Am, 242 Cm, 243+244 Cm and 237 Np) in water samples by alpha spectrometry following a chemical separation. This method can be used for any type of environmental study or monitoring after appropriate sampling and handling, and test sample preparation. The detection limit of the test method is 5 × 10 −3 Bq·l -1 to 5 × 10 −4 Bq·l -1 for a volume of test portion between 0,1 l to 5 l with a counting time of two to ten days. This is lower than the WHO criteria for safe consumption of drinking water (1 Bq·l -1 or 10 Bq·l -1 depending on radionuclide). [ 4 ] The method described in this document is applicable in the event of an emergency situation.