1.1 这些做法包括对目前在放射化学分析中使用的公认计数做法的审查。实践分为四个部分: 部分 一般信息 6– 11 Alpha计数 12– 22 Beta计数 23– 33 Gamma计数 34– 41 1.2 一般信息部分包含适用于所有类型放射性测量的信息，而其他每个部分都针对特定类型的辐射。 1.3 以国际单位制表示的数值应视为标准。本标准中不包括其他计量单位。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 5.1 本规程旨在总结用于放射性测量的各种通用辐射测量技术、设备和规程。

1.1 These practices cover a review of the accepted counting practices currently used in radiochemical analyses. The practices are divided into four sections: Section General Information 6 – 11 Alpha Counting 12 – 22 Beta Counting 23 – 33 Gamma Counting 34 – 41 1.2 The general information sections contain information applicable to all types of radioactive measurements, while each of the other sections is specific for a particular type of radiation. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 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. 1.5 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 practice was developed for the purpose of summarizing the various generic radiometric techniques, equipment, and practices that are used for the measurement of radioactivity.