玩具涂料中VOC含量测量结果不确定度评定

Evaluation of Uncertainty in Measurement of VOC in the Coatings for Toys

按GB24613-2009[1]《玩具用涂料中有害物质限量》标准检测涂料中的挥发性有机化合物(VOC)含量的不确定度主要来源于样品称量、不挥发物的测定和比重的测试,对这些分量进行了量化计算。VOC的含量可表示为(708±12)g/L,影响玩具涂料中VOC测量结果不确定度的主要因素是样品烘烤方法引起的测量不确定度。

Based on the systematic analysis of the uncertainty in measurement of VOC in the coatings for toys use GB24613-2009,the sources of the uncertainty were comprised of sample weighing,determination of non-volatile-matter content,and determination of the density.The major source of uncertainty was determination of the non-volatile matter content.