1.1 本试验方法包括用离子色谱法测定发动机冷却剂中的氟化物。几种乙二醇降解产物（不同的羧酸盐，包括但不限于甲酸盐和乙醇酸酯）可以通过该测试方法进行测定。 1.2 此测试方法适用于新的和用过的发动机冷却液。 1.3 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.4 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。 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 本试验方法用于定量测定发动机冷却剂中的氟化物和乙二醇降解产物。通过这种方法，可以根据设备的线性范围的要求，在不进行预处理的情况下直接进行分析，而不是稀释。 表1 指出了适用的分析物和近似检测限值。 A. 样品稀释 1. / 10 用试剂水，抑制电导率检测，IonPac AS20柱配AG20保护柱。 其他系统将需要使用选定的稀释因子、洗脱液、柱和检测器进行MQL测定。

1.1 This test method covers the determination of fluoride in engine coolants by ion chromatography. Several glycol degradation products (different carboxylates including, but not limited to, formate and glycolate) can be determined by this test method. 1.2 This test method applies to both new and used engine coolants. 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 test method is for the quantitative determination of fluoride and glycol degradation products in engine coolants. By this method, analysis can be performed directly without pretreatment, other than dilution, as required by the linear ranges of the equipment. Table 1 indicates applicable analytes and approximate detection limits. (A) Sample diluted 1 / 10 with reagent water, suppressed conductivity detection, IonPac AS20 column with AG20 guard column. Other systems will require MQL determinations using chosen dilution factors, eluents, columns, and detector.