锌试剂法测定循环水中锌离子含量的不确定度评定  

Uncertainty evaluation of determining content of Zinc ion in circulating water by Zincon spectrophotometry

作　　者：李刚[1] 

机构地区：[1]中国石化扬子石化股份有限公司质量检验和管理中心,江苏南京210048

出　　处：《石化技术与应用》2010年第2期146-149,共4页Petrochemical Technology & Application

摘　　要：采用锌试剂分光光度法测定循环水中锌离子浓度,分析了影响测定结果的各主要不确定度的来源,并对1个样品测定结果的合成标准不确定度和扩展不确定度进行了评定。结果表明,该方法测量不确定度的主要来源为标准曲线拟合求样品浓度和重复性测定引入的不确定度。The content of Zinc ion in circulating water was determined by Zincon spectrophotometry.The main factors affecting uncertainty of the determination were analyzed.The combined standard uncertainty and the expanding uncertainty of determination results for a sample were calculated.The results showed that the main influences on the uncertainly came from standard curve and repeated determinations.

关 键 词：不确定度 评定 锌试剂法 锌离子 循环水 校正曲线 重复性 

分 类 号：O657.32[理学—分析化学]