1.1 本试验方法适用于根据样本量、计数时间、检测器背景和示踪剂产量在检测水平上测定尿液中的铀。它被设计为检测职业工人可能接触的筛查工具。 1.2 本试验方法适用于50毫升尿液。本试验方法不涉及与其使用相关的取样方案或样品保存方法。 1.3 试验方法 C1844 提供了一种使用ICP-MS检测分析尿液中铀的替代方法。 1.4 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 第节给出了具体的预防说明 9 . 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 本试验方法用于检测职业操作中可能暴露于铀同位素的情况，这些操作可能导致通过尿路排出。

1.1 This test method is applicable to the determination of uranium in urine at levels of detection dependent on sample size, count time, detector background, and tracer yield. It is designed as a screening tool for detection of possible exposure of occupational workers. 1.2 This test method is designed for 50 mL of urine. This test method does not address the sampling protocol or sample preservation methods associated with its use. 1.3 Test Method C1844 offers an alternative method for the analysis of uranium in urine using ICP-MS detection. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. A specific precautionary statement is given in Section 9 . 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This test method is used to detect possible exposures to uranium isotopes from occupational operations that may result in elimination via the urinary tract.