1.1 该方法包括测定六氟化铀（UF）中的溴（Br）和氯（Cl） 6. )硝酸铀酰溶液。所述方法涵盖了超滤膜中溴的测定 6. 在0.2至8µg/g的浓度范围内，铀基。超滤中的氯 6. 可在4至160µg/g铀基范围内测定。较高浓度可通过适当的稀释液覆盖。溴的检测限为0.2µg/g铀基，氯的检测限为4µg/g铀基。 1.2 以国际单位制表示的数值应视为标准。 1.3 本标准可能涉及危险材料、操作和设备。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。 1.4 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 该方法旨在显示测试材料是否符合规范中给出的规范 C787 和 C788 .

1.1 This method covers the determination of bromine (Br) and chlorine (Cl) in uranium hexafluoride (UF 6 ) and uranyl nitrate solution. The method as written covers the determination of bromine in UF 6 over the concentration range of 0.2 to 8 µg/g, uranium basis. The chlorine in UF 6 can be determined over the range of 4 to 160 µg/g, uranium basis. Higher concentrations may be covered by appropriate dilutions. The detection limit for Br is 0.2 µg/g uranium basis and for Cl is 4 µg/g uranium basis. 1.2 The values stated in SI units are to be regarded as the standard. 1.3 This standard may involve hazardous materials, operations and equipment. 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. 1.4 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 The method is designed to show whether or not the tested materials meet the specifications as given in Specifications C787 and C788 .