1.1 这些多重测试方法包括通过化学和电解抑制离子色谱法测定原水、成品饮用水和瓶装（非碳酸化）水中的氯盐、溴酸盐、氯酸盐和溴化物。使用这些测试方法对每种分析物进行的测试范围如下: 范围 小节 试验方法A: 化学抑制离子色谱法 8. 到 20 绿泥石 5至500微克/升 溴酸盐 1至25微克/升 溴化物 5至250微克/升 氯酸盐 5至500微克/升 试验方法B: 电解抑制离子色谱法 21 到 31 绿泥石 20至1000微克/升 溴酸盐 1至30微克/升 溴化物 20至200微克/升 氯酸盐 20至1000微克/升 1.1.1 可通过适当的样品稀释或使用较小的注射体积来延长上限。 其他感兴趣的离子，如氟化物、氯化物、亚硝酸盐、硝酸盐、磷酸盐和硫酸盐，也可以使用这些测试方法进行测定。然而，这些离子的分析不是这些测试方法的目标。 1.2 用户有责任确保这些测试方法对未经测试的基质水的有效性。 1.3 这些试验方法在技术上等同于美国EPA方法300.1的B部分， 2. 标题为“用离子色谱法测定饮用水中的无机阴离子” 1.4 以国际单位制表示的数值应视为标准值。括号中给出的值是英寸-磅单位的数学转换，仅供参考，不被视为标准值。 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 卤氧化物氯酸盐、氯酸盐和溴酸盐是无机消毒副产品，在全世界范围内具有相当大的健康风险。亚氯酸盐和氯酸盐的出现与二氧化氯以及用于饮用水消毒的次氯酸盐溶液的使用有关。 溴酸盐的出现与臭氧用于消毒有关，其中天然存在的溴酸盐被氧化为溴酸盐。溴是溴酸盐形成的天然前体。

1.1 These multi-test methods cover the determination of the oxyhalides—chlorite, bromate, and chlorate, and bromide, in raw water, finished drinking water and bottled (non-carbonated) water by chemically and electrolytically suppressed ion chromatography. The ranges tested using these test methods for each analyte were as follows: Range Sections Test Method A: Chemically Suppressed Ion Chromatography 8 to 20 Chlorite 5 to 500 µg/L Bromate 1 to 25 µg/L Bromide 5 to 250 µg/L Chlorate 5 to 500 µg/L Test Method B: Electrolytically Suppressed Ion Chromatography 21 to 31 Chlorite 20 to 1000 µg/L Bromate 1 to 30 µg/L Bromide 20 to 200 µg/L Chlorate 20 to 1000 µg/L 1.1.1 The upper limits may be extended by appropriate sample dilution or by the use of a smaller injection volume. Other ions of interest, such as fluoride, chloride, nitrite, nitrate, phosphate, and sulfate may also be determined using these test methods. However, analysis of these ions is not the object of these test methods. 1.2 It is the user’s responsibility to ensure the validity of these test methods for waters of untested matrices. 1.3 These test methods are technically equivalent with Part B of U.S. EPA Method 300.1, 2 titled “The Determination of Inorganic Anions in Drinking Water by Ion Chromatography.” 1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered 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 The oxyhalides chlorite, chlorate, and bromate are inorganic disinfection by-products (DBPs) of considerable health risk concern worldwide. The occurrence of chlorite and chlorate is associated with the use of chlorine dioxide, as well as hypochlorite solutions used for drinking water disinfection. The occurrence of bromate is associated with the use of ozone for disinfection, wherein naturally occurring bromide is oxidized to bromate. Bromide is a naturally occurring precursor to the formation of bromate.