1.1 这些试验方法包括样品的制备和水中酚类化合物浓度的测定。它们基于苯酚（C）的显色反应 6. H 5. OH）与4-氨基安替比林以及其他酚类化合物反应产生的任何颜色均报告为苯酚。测得的苯酚浓度代表样品中酚类化合物的最低浓度。 1.2 对位带有取代基的酚类化合物可能无法与4-氨基安替比林定量显色。然而，苯酚的对位取代基，例如羧基、卤素、羟基、甲氧基或磺酸基，确实会产生4- 氨基安替比林。 1.3 这些测试方法针对以下特定应用: 范围 小节 试验方法A-氯仿萃取 0至100微克/升 11 到 17 试验方法B-直接光度法 >0.1毫克/升 （100微克/升） 18 到 24 1.4 用户有责任确保标准测试方法在其特定兴趣矩阵中的有效性。 1.5 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.6 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。 有关具体的危险声明，请参见 6.3.2 和 8.6 . 1.7 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====== 5.1 酚类化合物有时存在于天然和工业来源的地表水中。它们在溪流和其他水道中的存在经常会导致鱼组织和其他水生食物的异味。 5.2 对含有酚类的水进行氯化可能会产生有气味和令人反感的氯酚。

1.1 These test methods cover the preparation of the sample and the determination of the concentration of phenolic compounds in water. They are based on the color reaction of phenol (C 6 H 5 OH) with 4-aminoantipyrine and any color produced by the reaction of other phenolic compounds is reported as phenol. The concentration of phenol measured represents the minimum concentration of phenolic compounds present in the sample. 1.2 Phenolic compounds with a substituent in the para position may not quantitatively produce color with 4-aminoantipyrine. However, para substituents of phenol such as carboxyl, halogen, hydroxyl, methoxyl, or sulfonic acid groups do produce color with 4-aminoantipyrine. 1.3 These test methods address specific applications as follows: Range Sections Test Method A—Chloroform Extraction 0 to 100 μg/L 11 to 17 Test Method B—Direct Photometric >0.1 mg/L (100 μg/L) 18 to 24 1.4 It is the users’ responsibility to assure the validity of the standard test method for use in their particular matrix of interest. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 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. For specific hazard statements see 6.3.2 and 8.6 . 1.7 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 Phenolic compounds are sometimes found in surface waters from natural and industrial sources. Their presence in streams and other waterways frequently will cause off flavor in fish tissue and other aquatic food. 5.2 Chlorination of waters containing phenols may produce chlorophenols that are odoriferous and objectionable tasting.