标准曲线对测定地表水中铜、铅的影响及不确定度  

Study on the Influence of Calibration Curve Preparation on Cu,Pb Analysis in Surface Water by Inductively Coupled Plasma Method and Uncertainty

作　　者：高煦纳 Gao Xuna(Wenzhou Lucheng District Environmental Monitoring Station,Wenzhou 325000,China)

机构地区：[1]温州市鹿城区环境监测站,浙江温州325000

出　　处：《广东化工》2024年第15期154-156,205,共4页Guangdong Chemical Industry

摘　　要：采用电感耦合等离子发射光谱法测定地表水中的铜和铅,检测用的校准曲线分别采用容量瓶+单标线移液管和比色管+移液枪配制。对两组校准曲线进行了质量验证和差异性分析,并评定相对不确定度,得到容量瓶+单标线移液管法的相对不确定度为:urel(Cu)=1.57%,urel(Pb)=2.70%;比色管+移液枪配制法的相对不确定度为:urel(Cu)=1.64%,urel(Pb)=2.09%。通过试验,为实验室测定地表水中铜、铅的配制和差异提供科学的选择依据。Detecting Cu,Pbinsurfacewaterby ICP method was experienced,two approaches of preparingstandard curve were carried out with volumetric flask+pipettor method,and colorimetric tube+pipettor gunmethod,The relative uncertainty ofthe former method is urel(Cu)=1.57%,urel(Pb)=2.70%,The relative uncertainty of the later methodis urel(Cu)=1.64%,urel(Pb)=2.09%.The result showed that Cu,Pb had good linear relationship in the concentration range of 0 mg/L~2.0 mg/L.

关 键 词：电感耦合等离子发射光谱法 校准曲线 不确定度 差异性分析 

分 类 号：TQ[化学工程]