离子选择电极检测磷酸盐的不确定度评定  

Evaluation of uncertainty in determination of phosphate by ion selective electrode

作　　者：骆芳萍 杨慧中[1,2] LUO Fangping;YANG Huizhong(School of Internet of Things Engineering,Jiangnan University,Wuxi 214122,China;Key Laboratory of Advanced Control of Light Industry Process,Ministry of Education,Jiangnan University,Wuxi 214122,China)

机构地区：[1]江南大学物联网工程学院,江苏无锡214122 [2]江南大学轻工过程先进控制教育部重点实验室,江苏无锡214122

出　　处：《传感器与微系统》2020年第8期119-122,共4页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(61773181);中央高校基本科研业务费专项资金资助项目(JUSRP51733B)。

摘　　要：针对基于金属钼的磷酸盐离子选择电极检测磷酸盐的方法,为分析其检测过程中测量不确定度的主要来源以及检测结果的可信度,根据测量不确定度评判标准,对检测过程中的各不确定度分量来源及其相应的标准不确定度等进行了分析和计算。结果表明:影响该方法检测精度的主要因素是标准溶液的配制以及放大电路的精度。该研究为提高基于钼的磷酸盐离子选择电极法的检测精度提供了理论支撑与依据。For the method of detecting phosphate by metal molybdenum-based phosphate ion selective electrode,in order to analyze on the main source of measurement uncertainty during the detection process and the credibility of the test result,according to measurement uncertainty evaluation standard,the sources of each uncertainty component and their corresponding standard uncertainties are analyzed and calculated.The results show that the main factors affecting the detection precision of the scheme are the preparation of the standard solution and the precision of the amplification circuit.This study provides theoretical support and basis for improving the detection precision of molybdenum-based phosphate ion selective electrode method.

关 键 词：钼 离子选择电极 磷酸盐 不确定度 

分 类 号：TQ150.1[化学工程—电化学工业]