对二甲氨基苯甲醛分光光度法测定生活饮用水中肼的不确定度评定  

Uncertainty Assessment of Determination of Hydrazine in Drinking Water by Dimethylaminobenzaldehyde Spectrophotometry

作　　者：陈雨欣 李婉蓉 李剑英 Chen Yuxin;Li Wanrong;Li Jianying(Hangzhou Ecological and Environmental Monitoring Center,Hangzhou Zhejiang 310012,China)

机构地区：[1]浙江省杭州生态环境监测中心,浙江杭州310012

出　　处：《山西化工》2025年第1期128-129,142,共3页Shanxi Chemical Industry

摘　　要：本研究旨在评估利用对二甲氨基苯甲醛分光光度法对生活饮用水中肼成分进行定量分析时所涉及的不确定度。在测定过程中,影响不确定度的要素广泛,涉及水合肼标准溶液、制备肼标准贮备液时的稀释操作、量取经酸化处理的水样体积、移取试剂的体积量,以及进行样品重复性测定等多个环节。通过评估各个分量的不确定度,最终能够计算并得出相对标准不确定度以及扩展不确定度。This study aims to evaluate the uncertainty involved in the quantitative analysis of hydrazine components in drinking water using dimethylaminobenzaldehyde spectrophotometry.In the determination process,there are a wide range of factors that affect uncertainty,including the standard solution of hydrazine hydrate,dilution operation during the preparation of hydrazine standard storage solution,measuring the volume of acidified water sample,transferring the volume of reagents,and conducting sample repeatability determination.By evaluating the uncertainty of each component,the relative standard uncertainty and extended uncertainty can ultimately be calculated and obtained.

关 键 词：水合肼 不确定度评定 对二甲氨基苯甲醛 分光光度法 

分 类 号：O657[理学—分析化学] O661.1[理学—化学]