钼酸铵分光光度法测定水中总磷的不确定度评定  

Uncertainty Evaluation of Determination of Total Phosphorus in Water by Ammonium Molybdate Spectrophotometry

作　　者：刘小平 程艳 王晓愚 LIU Xiao-ping;CHENG Yan;WANG Xiao-yu(Xinjiang Academy of Environmental Protection Science,Urumqi,Xinjiang 830011;Xinjiang Key Laboratory for Environmental Pollution Monitoring and Risk Warning,Urumqi,Xinjiang 830011;Xinjiang Engineering Technology Research Center for Cleaner Production,Urumqi,Xinjiang 830011,China)

机构地区：[1]新疆环境保护科学研究院,新疆乌鲁木齐830011 [2]新疆环境污染监控与风险预警重点实验室,新疆乌鲁木齐830011 [3]新疆清洁生产工程技术研究中心,新疆乌鲁木齐830011

出　　处：《新疆环境保护》2018年第4期29-33,共5页Environmental Protection of Xinjiang

基　　金：新疆维吾尔自治区优秀青年科技人才培养项目(QN2016YX0660)资助

摘　　要：本文按照GB11893-89中测量步骤制备工作曲线,根据实际测量过程建立数学模型,分析钼酸铵分光光度法测定水中总磷不确定度的来源,并对各不确定度分量进行详细评定和量化分析,得出本法测定总磷不确定度的来源并讨论降低不确定度的方法措施,以提高测量的准确性,为实验室不确定度评定提供参考依据。this paper prepares the working curve according to the measurement steps in GB11893-89,establishes a mathematical model according to the actual measurement process,and analyzes the sources of uncertainty in the determination of total phosphorus in water by ammonium molybdate spectrophotometry. In addition,this paper evaluates and quantifies each uncertainty component in detail,to obtainthe sources of uncertainty in the determination of total phosphorus by this method,and discusses methods and measures to reduce the uncertainty,so as to improve the accuracy of measurement and provide a reference for the evaluation of uncertainty in laboratories.

关 键 词：钼酸铵分光光度法 总磷 不确定度 

分 类 号：X830.2[环境科学与工程—环境工程]