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1部分：VOC测定的重量法

[中文适用范围]： 本文件是ISO 11890系列的一部分，涉及涂料及其原材料的取样和试验。本文件适用于以下情况下挥发性有机化合物（VOC）含量的测定： — 情况1：存在除情况3以外的单组分涂料，且预期的VOC含量质量分数大于5％，包括不通过化学反应固化的单组分涂料和由于化学固化反应或气相色谱温度导致形成在正常固化条件下不会出现的新化合物而无法通过ISO 11890-2测量的单组分涂料，这些新化合物会影响VOC/SVOC的计算。 — 情况2：存在除情况3以外的多组分涂料，且预期的VOC含量质量分数大于1％； — 情况3：存在辐射固化涂料，且预期的VOC含量质量分数大于5％。本文件中的辐射固化涂料包括通过紫外线、电子束和其他辐射方法固化的涂料。如果第一种情况下的体系含有 SVOC，但不通过化学反应固化，则 VOC 结果可能受 SVOC 的影响，见附录 C。在这种情况下，优选 ISO 11890-2。ISO 11890-1 不能用于测定 SVOC 含量。在水性涂料中，不通过化学反应固化，如果水含量远大于 VOC 含量，且 VOC 含量小于 10% 的质量分数，则优选 ISO 11890-2。对于所有这三种情况，测量的主要目的是 VOC。但是，需要澄清的是，该 VOC 含量也可能包含 SVOC。真实的 VOC 含量可能低于 ISO 11890-1 测量的 VOC 含量。本文件中指定的方法假设挥发性物质是水或有机物。但是，可能存在其他挥发性无机化合物，这可能需要另一种合适的量化方法，因此在计算中允许这样做。本文件中定义的方法不适用于测定水分含量。1 [外文原描述]： This document is part of the ISO 11890 series, dealing with the sampling and testing of coating materials and their raw materials. This document is applicable to the determination of volatile organic compound (VOC) content in the following cases: — case 1: where there are single-pack coating materials other than case 3, and the expected VOC content is greater than a mass fraction of 5 %, including single-pack coating materials cure not through chemical reactions and single-pack coating materials which cannot be measured by ISO 11890-2 due to chemical cure reactions or gas chromatography temperatures leading to formation of new compounds that would not appear under normal cure conditions and impacts VOC/SVOC calculation.; — case 2: where there are multi-pack coating materials other than case 3 and the expected VOC content is greater than a mass fraction of 1 %; — case 3: where there are radiation curable coating materials, and the expected VOC content is greater than a mass fraction of 5 %. Radiation curable coating materials in this document include coating materials that are cured by UV, electron beam, and other radiation methods. If the system of the first case contains SVOC, but do not cure through chemical reactions, the VOC result can be influenced by SVOC, see Annex C. In this case, ISO 11890-2 is preferred. ISO 11890-1 cannot be used for the determination of the SVOC content. In water-borne coating materials, that do not cure through chemical reactions, if the water content is much greater than VOC content and VOC content is less than a mass fraction of 10 %, ISO 11890-2 is preferred. For all three cases, the main purpose measured is VOC. However, clarify that this VOC content can also contain SVOC. The real VOC content can be lower than the VOC content measured by ISO 11890-1. The method specified in this document assumes that the volatile matter is either water or organic. However, it is possible that other volatile inorganic compounds are present which can require another suitable method for quantification, which is thus allowed for in the calculations. The method defined in this document is not applicable for determination of water content.