1.1 本规程描述了通过ICP-OES分析六种最常见稀土元素时，对流化催化裂化催化剂、稀土交换沸石材料、添加剂和相关材料的分析。 1.2 以国际单位制表示的数值应视为标准值。本规程中不包括其他测量单位。 1.3 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。 看见 附录X3 . 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 催化剂和催化剂材料的化学成分是催化剂性能的重要指标，是评估催化裂化过程参数的重要工具。 这种做法将有助于催化剂制造商和炼油厂进行质量验证和性能评估，并有助于州和联邦各级环境当局评估和验证各种合规性计划 ( 1. , 2. , 3. ) .

1.1 This practice describes the analysis of fluid catalytic cracking catalysts, rare earth exchanged zeolitic materials, additive and related materials when analyzed by ICP-OES for the six most common rare earth elements. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this Practice. 1.3 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. See Appendix X3 . 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 chemical composition of catalysts and catalyst materials is an important indicator of catalyst performance and is a valuable tool for assessing parameters in a FCCU process. This practice will be useful to catalyst manufacturers and petroleum refiners for quality verification and performance evaluation, and to environmental authorities at the state and federal levels for evaluation and verification of various compliance programs ( 1 , 2 , 3 ) .