紫外分光光度法测定水中硝酸盐氮不确定度的评定  

Ultraviolet Spectrophotometric Method Determination of Evaluation of Uncertainty of Determination of Nitrate Nitrogen in Water

作　　者：方桂丽 廖洁莹[1] 杨熙[1] 梁炬荣 蔡秀萍[2] 

机构地区：[1]中国广州分析测试中心广东省化学危害应急检测技术重点实验室,广东广州510070 [2]广州中医药大学附属骨伤科医院,广东广州510240

出　　处：《山东化工》2017年第10期92-94,共3页Shandong Chemical Industry

基　　金：广东省科技计划项目(2015B090906023);广东省科技计划项目(2013B091604003)

摘　　要：根据测量不确定度理论,结合紫外分光光度法测定水中硝酸盐氮浓度的实验原理,评定其测量不确定度。评定过程中充分考虑到测定过程中标准溶液的配制、标准曲线的配制、试验数据重复性引起及该实验过程中可能产生的各种不确定度。建立硝酸盐氮浓度测量的不确定度数学模型,来计算紫外分光光度法测定水质中硝酸盐氮浓度的标准不确定度及其扩展不确定度。According to the measurement uncertainty theory, combined with uv spectrophotometry determination of nitrate nitrogen concentration in water, the experiment principle of the evaluation of the uncertainty of measurement. Full consideration in the process of assessment to determine the configuration of the standard solution, standard curve in the process of preparation, test data repeatability and may be produced in the process of the experiment of all kinds of uncertainty. Nitrate nitrogen concentration measurement uncertainty mathematic model, to calculate the ultraviolet spectrophotometrie method of determination of nitrate nitrogen concentration in water quality standard uncertainty and expanded uncertainty.

关 键 词：紫外分光光度法 硝酸盐氮 不确定度 扩展不确定度 

分 类 号：O657.32[理学—分析化学]