1.1 本试验方法用于使用气相色谱法测定水性多组分涂料中的单个有机挥发性化合物（见 注1 ). 1.2 该方法还成功地用于测定溶剂型多组分涂料中的特殊挥发性有机物含量。正在继续开发该方法的这一方面，稍后将添加到该方法中。 注1: 目前还没有直接分析水性多组分中VOC含量的方法- 组件涂层。溶剂型多组分涂料的VOC含量通过简单的混合组分失重测定直接测定（试验方法 D2369 ). 1.3 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。 1.4 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。 1.5 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 在实践方法的运用上 D3960 为了测量涂料中的VOC含量，水性涂料的精度往往较差，因为VOC重量分数是间接测定的。 本方法首先识别单个挥发性有机物，然后直接对其进行量化。VOC总重量分数通过添加单个重量分数值获得。

1.1 This test method is for the determination of the individual organic volatile compounds of waterborne multi-component coatings using gas chromatography (see Note 1 ). 1.2 The method has also been used successfully to determine the speciated volatile organic content of solvent-borne multi-component coatings. Work is continuing to develop this aspect of the method and will be added to the method at a later date. Note 1: Currently there are no methods for the direct analysis of the VOC content of waterborne multi-component coatings. The VOC content of solvent-borne multi-component coatings is determined directly by a simple weight loss determination of the mixed components (Test Method D2369 ). 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 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. 1.5 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 In using the methods of Practice D3960 to measure the VOC content of coatings, precision tends to be poor for waterborne coatings because the VOC weight fraction is determined indirectly. The present method first identifies and then quantifies the individual VOCs directly. The total VOC weight fraction is obtained by adding the individual weight fraction values.