流动注射法测定海水中挥发酚的不确定度评定  

Uncertainty Evaluation in Determination of Volatile Phenol in Seawater by FIA

作　　者：曾兴宇[1] 刘静[1] 王燕[2] 

机构地区：[1]国家海洋局天津海水淡化与综合利用研究所,天津300192 [2]国家海洋环境监测中心,辽宁大连116023

出　　处：《盐业与化工》2013年第10期24-26,31,共4页Jounral of Salt and Chemical Industry

基　　金：海洋公益性行业科研专项经费项目(201305039);中央级公益性科研院所基本科研业务费专项资金项目(K-JBYWF-2011-G23)

摘　　要：采用连续流动注射分光光度计法测定海水中的挥发酚。对测量结果的不确定度进行了评定。分析了测量程序中不确定度的各项来源,包括样品采集、标准溶液制备、校准曲线回归、前处理方法、样品回收率等分量引入的不确定度及其计算方法,最后合成标准不确定度,通过乘以95%概率下的扩展因子2,获得测量结果的扩展不确定度。A method for FIA determination of volatile phenolics in seawater was developed and the measurement uncertainty was evaluated. The sources of uncertainty produced in analysis process were discussed and including sample collection preparation of standard solution, standard eurve regression, dilution of sample, sample recovery of the pre - treatment process, etc. were con-sidered as the main sources of the measurement uncertainty. And the expanded uncertainty was ob-tained from synthetical standard uncertainty multiplied by expanded factor of 2 under the confidence level of 95%.

关 键 词：连续流动注射 海水 挥发酚 不确定度 

分 类 号：O657.7[理学—分析化学]