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Standard Test Method for Odor and Flavor Transfer From Materials in Contact With Municipal Drinking Water 与城市饮用水接触的材料的气味和风味转移的标准测试方法
发布日期: 2021-07-15
1.1 本试验方法描述了测量可能直接接触市政饮用水的材料的气味和风味特性的程序。对于这种方法,“饮用水”将被视为来自水源(例如,河流、湖泊、水库)的水,通过市政配水系统(即,不包括家庭或商业水龙头中的水)。该测试方法的重点是评估材料将气味、风味或两者转移到水中的可能性。 1.2 本试验方法提供了样品制备程序、感官评价方法和结果解释过程。 1.3 本标准并非旨在解决与其使用相关的所有安全问题(如有)。 所有与饮用水接触的材料都需要通过使用NSF/ANSI标准61的认证实验室的测试进行批准。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。 1.4 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 许多与饮用水接触的材料可能会影响水的美学质量。 其中一些不同的材料包括:储液罐、混凝土或金属管道,或两者兼有、密封剂、合成储液罐盖和衬里、修补粘合剂、垫片、油漆和塑料。尽管NSF标准61提供了对健康影响的测试,但它并没有解决味道和气味的影响。实用快速测试 ( 1. ) , 4. 已提出,但尚未被作为官方测试标准。据报道,由于有机化合物从经批准的材料中浸出到水中,会产生味觉和气味问题。只有直接接触饮用水的材料才需要测试。
1.1 This test method describes procedures for measuring odor and flavor properties of materials which may come into direct contact with municipal drinking water. For this method, “drinking water” will be considered water from the source (for example, river, lake, reservoir) through the municipal distribution system (that is, not including in-home or in-business taps). The focus of this test method is the evaluation of the materials in terms of their potential to transfer odors, flavors, or both to water. 1.2 This test method provides sample preparation procedures, methods of sensory evaluation, and a process for interpretation of results. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. All materials that come into contact with drinking water are required to be approved through testing by accredited laboratories using NSF/ANSI Standard 61. 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. 1.4 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 Many materials that come into contact with drinking water have the potential of impacting the aesthetic quality of the water. Some of these diverse materials include: storage reservoirs, concrete or metal piping, or both, sealants, synthetic reservoir covers and liners, mending adhesives, gaskets, paints, and plastics. Though NSF Standard 61 provides testing for health effects, it does not address taste and odor implications. A Utility Quick Test ( 1 ) , 4 has been proposed, but has not been adopted as an official test standard. Taste and odor problems have been reported as a result of organic compounds leaching from approved materials into water. Materials only need to be tested if they come into direct contact with drinking water.
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归口单位: E18.06
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