电感耦合等离子体质谱法测定生活饮用水水表浸泡液中铅的不确定度评定  

Uncertainty evaluation for the determination of lead in drinking water meter soak by inductively coupled plasma mass spectrometry

作　　者：王琳琳 樊晓翠 何东郡 张森 许爱华 赵立健 WANG Linlin;FAN Xiaocui;HE Dongjun;ZHANG Sen;XU Aihua;ZHAO Lijian(Shandong institute of metrology,Jinan 250100,China;Jinan Centre for Digital Applications in Econ-environment,Jinan 250031,China)

机构地区：[1]山东省计量科学研究院,济南250100 [2]济南市生态环境数字化应用中心,济南250031

出　　处：《化学分析计量》2024年第5期124-129,共6页Chemical Analysis And Meterage

摘　　要：评定电感耦合等离子体质谱法测定生活饮用水水表浸泡液中铅含量的不确定度。根据JJF 1059.1—2012《测量不确定度评定与表示》对各个不确定度来源(包括样品水表内部容积测量、标准溶液配制、校准曲线拟合、测量重复性)进行分析和量化,获得测定结果的扩展不确定度。3种型号水表样品浸泡液中铅含量的测量结果分别为(0.38±0.03)、(0.53±0.20)、(2.08±0.30)μg/L (p=95%,k=2)。测定结果的不确定度主要来源于测量重复性引入的不确定度和标准曲线拟合引入的不确定度。The uncertainty was evaluated for the determination of lead in drinking water meter soak by inductively coupledplasma mass spectrometry.According to JJF 1059.1—2012 Evaluation and Expression of Uncertainty in Measurement,various sources of uncertainty including internal volume measurement,sample storage,preparation of standard series solutions,fitting of calibration curve and reproducibility of measurement results were analyzed and quantified.The expanded uncertainty of lead in three drinking water meters were(0.38±0.03),(0.53±0.20),(2.08±0.30)μg/L(p=95%,k=2),respectively.The results showed that the main sources of uncertainty were measurement repeatability and standard curve fitting respectively.

关 键 词：电感耦合等离子体质谱法 饮用水 水表 铅 不确定度 

分 类 号：O657.6[理学—分析化学]