1.1 本试验方法适用于从0.005开始测定钡的质量百分比 % 至1.0 %, 钙和镁从0.002 % 至0.3 %, 和0.002的锌 % 至0.2 % 在润滑油中。 1.2 更高的浓度可以通过适当的稀释来确定。钡、钙、镁和锌等金属的较低浓度约为10 ppm水平也可以通过该试验方法测定。在这些较低浓度下使用该试验方法进行测定，应由买方和卖方达成协议。 1.3 当使用不含粘度指数改进剂的标准进行校准时，含有粘度指数改良剂的润滑油可能会产生低结果。 1.4 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。 1.5 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。 中给出了具体的警告声明 4.1 ， 7.3 和 9.1 。 1.6 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 有些油含有金属添加剂，可作为洗涤剂、抗氧化剂、抗磨剂等。有些添加剂含有一种或多种金属:钡、钙、锌和镁。该试验方法提供了一种测定这些金属浓度的方法，可以指示这些油中的添加剂含量。 5.2 将几种添加剂金属及其化合物添加到润滑油中以提供有益的性能。（参见 表1 .）

1.1 This test method is applicable for the determination of mass percent barium from 0.005 % to 1.0 %, calcium and magnesium from 0.002 % to 0.3 %, and zinc from 0.002 % to 0.2 % in lubricating oils. 1.2 Higher concentrations can be determined by appropriate dilution. Lower concentrations of metals such as barium, calcium, magnesium, and zinc at about 10 ppm level can also be determined by this test method. Use of this test method for the determination at these lower concentrations should be by agreement between the buyer and the seller. 1.3 Lubricating oils that contain viscosity index improvers may give low results when calibrations are performed using standards that do not contain viscosity index improvers. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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 warning statements are given in 4.1 , 7.3 , and 9.1 . 1.6 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 Some oils are formulated with metal-containing additives that act as detergents, antioxidants, antiwear agents, etc. Some of these additives contain one or more of these metals: barium, calcium, zinc, and magnesium. This test method provides a means of determining the concentration of these metals that gives an indication of the additive content in these oils. 5.2 Several additive metals and their compounds are added to the lubricating oils to give beneficial performance. (See Table 1 .)