色漆和清漆.挥发性有机化合物（VOC）和/或半挥发性有机化合物（SVOC）含量的测定.第2部分:气相色谱法

[中文适用范围]： 本文件适用于预期 VOC 和/或 SVOC 含量大于 0.01 %（按质量计）至 100 %（按质量计）的 VOC 和 SVOC 的测定。 当VOC按质量计大于15%时，使用ISO 11890-1中给出的方法。 本文件（方法 ISO 11890-2）适用于系统包含 VOC 和 SVOC 的情况，因为 ISO 11890-1 的 VOC 结果可能会受到 SVOC 的影响。 对于小于 0.1% 的 VOC 含量，采用 SVOC 含量中描述的顶空法。 注 1：涂料及其原材料的某些成分在分析过程中可能会分解并产生人造 VOC 和/或 SVOC 信号。 当测定涂料及其原材料的 VOC 和/或 SVOC 时，这些信号是方法的假象，不予考虑（附录 B 中给出了示例）。 该方法假设挥发性物质是水或有机物。 然而，可能存在其他挥发性无机化合物，并且可能需要通过另一种合适的方法进行量化并在计算中考虑。 本文件规定的方法不适用于水分含量的测定。 注2：如果涂料或其原材料中存在有机酸或碱及其相应的盐，则由于酸或碱平衡的变化，用此方法定量的量可能不准确。 [外文原描述]： This document is applicable for the determination of VOC and SVOC with an expected VOC and/or SVOC content greater than 0,01 % by mass up to 100 % by mass. The method given in ISO 11890-1 is used when the VOC is greater than 15 % by mass. This document (method ISO 11890-2) applies when the system contains VOC and SVOC as the VOC result of ISO 11890-1 can be influenced by the SVOC. For VOC content smaller than 0,1 %, the head space method described in ISO 17895 is used as an alternative. ISO 11890-1 and ISO 17895 cannot be used for the determination of the SVOC content. NOTE 1 Some ingredients of coating materials and their raw materials can decompose during analysis and cause artificial VOC and/or SVOC signals. When determining VOC and/or SVOC for coating materials and their raw materials, these signals are artefacts of the method and are not taken into account (examples are given in Annex B). This method assumes that the volatile matter is either water or organic. However, other volatile inorganic compounds can be present and might need to be quantified by another suitable method and allowed for in the calculations. The method defined in this document is not applicable for determination of water content. NOTE 2 If organic acids or bases and their corresponding salts are present in the coating material or its raw materials, the amount that is quantified by this method might not be accurate due to a change in the acid or base equilibrium.