1.1 此测试方法 2. 涵盖了使用氟选择电极测定微咸水、海水和盐水中的可溶性氟离子。 1.2 含有1.0至25mg/L的样品可以通过该测试方法进行分析。 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。 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 微咸水、海水或盐水的鉴定是通过比较其溶解成分的浓度来确定的。这些结果用于评估水的来源，确定它是否是一种可能的污染物，或者是否与有价值矿物的潜在来源有关。 例如，在地球化学研究中，一些相关数据表明氟化物是锂存在的间接指标。

1.1 This test method 2 covers the determination of soluble fluoride ions in brackish water, seawater and brines by use of a fluoride selective electrode. 1.2 Samples containing from 1.0 to 25 mg/L can be analyzed by this test method. 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 Identification of a brackish water, seawater, or brine is determined by comparison of the concentrations of their dissolved constituents. The results are used to evaluate the origin of the water, determine if it is a possible pollutant, or if it is related to a potential source of a valuable mineral. For example, in geochemical studies some correlation data indicate that fluoride is an indirect indicator of the presence of lithium.