警告-使用本文件的人员应熟悉正常的实验室实践。本文件并非旨在解决与其使用相关的所有安全问题（如有）。用户有责任建立适当的安全和健康实践，并确定任何其他限制的适用性。 重要事项——根据本文件进行的测试必须由经过适当培训的人员进行。本文件规定了使用阿尔法光谱法和232U作为产量示踪剂测定环境水（包括海水）样品中铀同位素活性浓度的条件。 需要进行化学分离，以从样品的试验部分中分离和纯化铀。购买本文件时可获得的所有当前修订均包含在购买本文件中。

WARNING — Persons using this document should be familiar with normal laboratory practices. This document does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to determine the applicability of any other restrictions. IMPORTANT — It is absolutely essential that tests conducted according to this document be carried out by suitably trained staff.This document specifies the conditions for the determination of uranium isotope activity concentration in samples of environmental water (including sea waters) using alpha-spectrometry and232U as a yield tracer. A chemical separation is required to separate and purify uranium from a test portion of the sample.All current amendments available at time of purchase are included with the purchase of this document.