1.1 这些试验方法包括测定粉末阳离子交换树脂（氢型）和粉末阴离子交换树脂（氢氧化物型）的操作离子交换容量。这些测试方法旨在测试用于水处理的新型粉末离子交换树脂。包括以下两种试验方法: 小节 试验方法A-阴离子交换操作容量 树脂，氢氧化物形式 7. 到 15 试验方法B-阳离子交换的工作容量 氢型树脂 16 到 24 1.2 以国际单位制表示的数值应视为标准。 括号中的英寸-磅单位仅供参考。 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）。本标准的用户有责任在使用前制定适当的安全和健康实践，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====== 4.1 粉末树脂预涂层的除盐能力受其所含阴离子交换树脂或阳离子交换树脂的容量限制。应用包括化石燃料发电厂中的冷凝水精处理，以及核电站中的冷凝水精处理、乏燃料池水处理、反应堆水处理和低放射性废液处理。 4.2 通过测定阳离子交换树脂或阴离子交换树脂的离子交换容量曲线（在特定条件下每单位时间消耗的容量），可以估计处理相同组成的液体时的运行长度和剩余容量。 尽管这些测试方法无法准确预测冷凝器泄漏期间的性能，但它们有助于确定在所用测试条件下测量的运行能力。 4.3 这些试验方法可用于监测粉末阴离子交换树脂或粉末阳离子交换树脂的性能。任一树脂的总容量主要取决于树脂内离子交换位点的数量密度。操作容量是总容量、接收时转化为所需离子形式的程度以及影响离子交换动力学的树脂和系统的性能的函数。

1.1 These test methods cover the determination of the operating ion-exchange capacity of both powdered cation-exchange resins (hydrogen form) and powdered anion-exchange resins (hydroxide form). These test methods are intended for use in testing new powdered ion-exchange resins when used for the treatment of water. The following two test methods are included: Sections Test Method A—Operating Capacity, Anion-Exchange Resin, Hydroxide Form 7 to 15 Test Method B—Operating Capacity, Cation-Exchange Resin, Hydrogen Form 16 to 24 1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only. 1.3 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 and health 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 ====== 4.1 The salt removal capacity of a powdered resin precoat is limited by the capacity of either the anion-exchange resin or the cation-exchange resin contained in it. Applications include condensate polishing in fossil-fueled electric generating plants, as well as condensate polishing, spent fuel pool water treatment, reactor water treatment, and low-level radioactive liquid waste treatment in nuclear-powered electric generating plants. 4.2 By determining the ion-exchange capacity profile of either a cation exchange resin or an anion-exchange resin (capacity expended per unit of time under specific conditions), it is possible to estimate runlength and remaining capacity when treating a liquid of the same makeup. Although they cannot accurately predict performance during condenser leaks, these test methods are useful for determining operating capacities as measured under the test conditions used. 4.3 These test methods may be used to monitor the performance of either powdered anion-exchange resin or powdered cation-exchange resin. The total capacity of either resin depends primarily upon the number density of ion-exchange sites within the resin. The operating capacity is a function of the total capacity, degree of conversion to the desired ionic form when received, and properties of the resin and the system that affect ion exchange kinetics.