1.1 本试验方法涵盖原油中盐的测定。在本试验方法中，盐用%（m/m）NaCl（氯化钠）表示，范围为0.0005 % 至0.15 % （米/米）。 1.2 检测限为0.0002 % （m/m）表示盐（如NaCl）。 1.3 该试验方法适用于几乎所有的重质石油产品，如原油、残渣和燃料油。它也可用于二手汽轮机油和船用柴油，以估计海水污染。来自油中添加剂的水萃取盐是共同确定的。 1.4 以国际单位制表示的数值应视为标准。 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。 1.6 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====== 4.1 在决定油是否需要脱盐时，了解油中可水萃取的无机卤化物很重要。过量的卤化物，尤其是原油中的卤化物，往往会导致炼油装置中的腐蚀速度加快。

1.1 This test method covers the determination of salt in crude oils. For the purpose of this test method, salt is expressed as % (m/m) NaCl (sodium chloride) and covers the range from 0.0005 % to 0.15 % (m/m). 1.2 The limit of detection is 0.0002 % (m/m) for salt (as NaCl). 1.3 The test method is applicable to nearly all of the heavier petroleum products, such as crude oils, residues, and fuel oils. It may also be applied to used turbine oil and marine diesel fuel to estimate seawater contamination. Water extractable salts, originating from additives present in oils, are codetermined. 1.4 The values stated in SI units are to be regarded as the 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. 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 ====== 4.1 A knowledge of water extractable inorganic halides in oil is important when deciding whether or not the oils need desalting. Excessive halide, especially in crude oil, frequently results in higher corrosion rates in refining units.