1.1 本试验方法包括滴定法测定涂料工业中使用的锆干燥器中的锆，并使用乙二胺四乙酸二水合物（EDTA）二钠盐。 1.2 本试验方法仅限于测定不含其他干燥器元素的液态锆干燥器中的锆含量。本试验方法不适用于干燥器混合物，也不能区分铪和锆。 1.3 所有可在酸性介质中用EDTA滴定的阳离子都会产生干扰，且不得出现在样品中。 1.4 本试验方法已针对6和12的浓度进行了试验 % 锆，但没有理由相信它不适合较高或较低的锆浓度，前提是按比例调整试样尺寸。 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。 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====== 4.1 氧化型涂层中使用的锆干燥器的数量显著影响其干燥性能。本试验方法可用于确认涂料行业使用的纯液体锆干燥器的规定含量。

1.1 This test method covers the titrimetric determination of zirconium in zirconium driers used in the coatings industry and utilizes the disodium salt of ethylenediaminetetraacetic acid dihydrate (EDTA). 1.2 This test method is limited to the determination of the zirconium content of a liquid zirconium drier that does not contain other drier elements. The test method is not applicable to drier blends and does not differentiate hafnium from zirconium. 1.3 All cations that can be titrated with EDTA in acid media interfere and must not be present in the sample. 1.4 This test method has been tested for concentrations of 6 and 12 % zirconium, but there is no reason to believe that it is not suitable for higher or lower zirconium concentrations, provided specimen size is adjusted proportionately. 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. 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 ====== 4.1 The amount of zirconium drier used in oxidizing-type coatings significantly affects their drying properties. This test method may be used to confirm the stated content of a pure liquid zirconium drier manufactured for use by the coatings industry.