1.1 这些试验方法包括化学成分镉的化学分析，其限值如下: 要素 成分，最大值，% 锑 0.001 砷 0.003 铜 0.015 领导 0.025 银 0.010 铊 0.003 锡 0.010 锌 0.035 1.2 测试方法按以下顺序出现: 小节 罗丹明B分光光度法测定锑 0.0002%至0.0010%] 62 – 72 钼蓝分光光度法测定砷 [0001%-0.005%] 40 – 50 新铜试剂分光光度法测定铜【0.002%至0.030%】 10 – 19 原子吸收光谱法测定的铜、铅、银和锌【0.004%至0.02%Cu，0.01%至0.05%Pb，0.004%至0.02%Ag， 和0.01%至0.05%的Zn] 51 – 61 二硫腙分光光度法测定铅。 001%至0.05%] 20 – 29 铊的罗丹明B分光光度法 [0.0003%至0.005%] 30 – 39 8-喹啉分光光度法测定锡[00025%-0.0150%] 73 – 82 1.3 本标准并不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。 具体的预防信息见第节 6. , , 和 . 1.4 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====== 4.1 这些镉化学分析的试验方法主要用于测试此类材料是否符合规范中的成分规范 B440 。假设所有使用这些测试方法的人员都是经过培训的分析员，能够熟练、安全地执行常见的实验室程序。预计工作将在设备齐全的实验室中进行。

1.1 These test methods cover the chemical analysis of cadmium having chemical compositions with the following limits: Element Composition, max, % Antimony 0.001 Arsenic 0.003 Copper 0.015 Lead 0.025 Silver 0.010 Thallium 0.003 Tin 0.010 Zinc 0.035 1.2 The test methods appear in the following order: Sections Antimony by the Rhodamine B Spectrophotometric Method [0.0002 % to 0.0010 %] 62 – 72 Arsenic by the Molybdenum Blue Spectrophotometric Method [0.001 % to 0.005 %] 40 – 50 Copper by the Neocuproine Spectrophotometric Method [0.002 % to 0.030 %] 10 – 19 Copper, Lead, Silver, and Zinc by the Atomic Absorption Spectrometry Method [0.004 % to 0.02 % Cu, 0.01 % to 0.05 % Pb, 0.004 % to 0.02 % Ag, and 0.01 % to 0.05 % Zn] 51 – 61 Lead by the Dithizone Spectrophotometric Method [0.001 % to 0.05  %] 20 – 29 Thallium by the Rhodamine B Spectrophotometric Method [0.0003 % to 0.005 %] 30 – 39 Tin by the 8-Quinolinol Spectrophotometric Method [0.0025 % to 0.0150 %] 73 – 82 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. Specific precautionary information is given in Section 6 , , , and . 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 ====== 4.1 These test methods for the chemical analysis of cadmium are primarily intended to test such material for compliance with compositional specifications in Specification B440 . It is assumed that all who use these test methods will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory.