文档介绍：【2l】赵正,漆亮,黄智龙,【J】.地学前缘,2009,16(1): . 【22】Jackson SE,Fryer BJ,Gossew,Healey D C,Longerich HR Strong DEDetermination of the precious metals in geological materials by inductively coupled plasma-mass spectrometry(ICP—MS)with nickel sulphide fire-·assay collection and tellurium coprecipitation【J】.Chemical Geology,1 990,83:1 9-1 【23】Sun Y’Sun sulfide fireassayimproved forpre-concentration ofplatinum group elements ingeological samples:a practical means ofultra-trace bined with inductively coupled plasma-mass spectrometry【J】.Analyst,2005,1 30:664-669. 紫外分光光度法测定地下水中硝酸根的不确定度评定刘建坤朱家平郑荣华(南京地质矿产研究所,南京210016) 摘要:采用不确定度连续传递模型,对紫外分光光度法测定地下水中硝酸根的不确定度进行了评定。测量结果的不确定度主要来源于标准溶液引入的不确定度、曲线拟合产生的不确定度和测量过程引入的不确定度三部分,摩尔质量、样品体积产生的不确定度较小,可以忽略不计。采用双误差对标准曲线进行拟合,利用STDCURVE软件可以直接得到测量结果在95% 置信度时的扩展不确定度。关键词:紫外分光光度法,硝酸根,不确定度评定,双误差回归中图分类号: 文献标识码:A 文章编号: Evaluation oftheuncertainty indetermination ofnitrate radical ingroundwater by ultraviolet spectrophotometry LIUJian-kun ZHU Jia-ping ZHENG Rong-hua (Nanjing InstituteofGeology andMineralResources,N舳jing 210016) Abstract:Uncertainty ofthedetermination of nitrate radicalingroundwater by ultraviolet spectrophotometry was evaluatedusing Continuous Propagation Model main sources ofuncertainty came from calibrationsolution,calibration curve and themeasurement. Uncertainty ofmolar mass and sample volume were ignored