ICP-AES测定电子电气产品中铅的不确定度评定.pdfVIP

第22 卷，第4 期 化学分析计量 Vol. 22 ，No. 4 90 2013 年7 月 CHEMICAL ANALYSIS AND METERAGE Jul. 2013 doi ：10.3969／j.issn.1008–6145.2013.04.027 ICP–AES 测定电子电气产品中铅的不确定度评定* 徐正华，陈凯，蒋小良，孙鲁，李蕴 （江门出入境检验检疫局，广东江门　529000 ） 摘要　建立了ICP–AES 测定电子电气产品中铅含量的方法，根据该方法的定量数学模型分析了不确定度的来 源，对各不确定度分量进行了评定和量化，计算了合成不确定度和扩展不确定度。结果表明，标准系列溶液配制、标 准曲线拟合、测量重复性和加标回收率是不确定度的主要来源。电子电气产品塑胶部件中铅含量为149.07 mg／kg k 时，扩展不确定度为3.55 mg ／kg ( =2) 。 关键词　不确定度；RoHS ；铅；电子电气产品 中图分类号：O657.31 文献标识码：A 文章编号：1008–6145(2013)04–0090–03 Uncertainty Evaluation of ICP–AES Analysis Method for Lead in Electric and Electronic Products Xu Zhenghua ， Chen Kai ， Jiang Xiaoliang ， Sun Lu, Li Yun (Jiangmen Entry–Exit Inspection and Quarantine Bureau ，Jiangmen　529000, China) Abstract　A method for the determination lead content in electric and electronic products by ICP–AES was established. According to the quantitative mathematic model of the method ，the uncertainty sources were analyzed. Each component of uncertainty was evaluated and quantified and then the combined uncertainty and the expanded uncertainty were calculated. The results showed that the standard series configuration, the standard curve fitting, the measurement k repeatability and the recovery were the main sources of uncertainties. The expanded uncertainty was 3.55 mg/kg ( =2) as the content of lead in the electrical and electronic products plastic parts was 149.07 mg/kg. Keywords　uncertainty; RoHS; lead; electric and electronic product 铅是一种累积性有毒重金属, 它会影响人体的 微波消解仪：Milestone ／Ethos One 型，意大利 肾功能、内分泌系