中国环境监测
中國環境鑑測
중국배경감측
ENVIRONMENTAL MONITORING IN CHINA
2010年
1期
8-11
,共4页
紫外分光光度法%双波长分光光度法%硝酸盐%DMAC
紫外分光光度法%雙波長分光光度法%硝痠鹽%DMAC
자외분광광도법%쌍파장분광광도법%초산염%DMAC
Ultraviolet spectrophotometry%Dual-wavelength spectrophotometry%Nitrate%Dimethylacetamide
紫外分光光度法是目前水中N,N-二甲基乙酰胺(DMAC)的常用分析方法.研究结果表明,硝酸盐对紫外分光光度法测定DMAC具有很强的干扰.本研究中提出一种双波长法用于消除水中硝酸盐的干扰作用, 所采用的波长对为194.0nm和219.0nm.精密度实验及加标回收实验表明,方法的相对标准偏差在4%以内,回收率为95%～102%,可有效消除硝酸盐的干扰作用.
紫外分光光度法是目前水中N,N-二甲基乙酰胺(DMAC)的常用分析方法.研究結果錶明,硝痠鹽對紫外分光光度法測定DMAC具有很彊的榦擾.本研究中提齣一種雙波長法用于消除水中硝痠鹽的榦擾作用, 所採用的波長對為194.0nm和219.0nm.精密度實驗及加標迴收實驗錶明,方法的相對標準偏差在4%以內,迴收率為95%～102%,可有效消除硝痠鹽的榦擾作用.
자외분광광도법시목전수중N,N-이갑기을선알(DMAC)적상용분석방법.연구결과표명,초산염대자외분광광도법측정DMAC구유흔강적간우.본연구중제출일충쌍파장법용우소제수중초산염적간우작용, 소채용적파장대위194.0nm화219.0nm.정밀도실험급가표회수실험표명,방법적상대표준편차재4%이내,회수솔위95%～102%,가유효소제초산염적간우작용.
Ultraviolet spectrophotometry is widely used in the determination of dimethylacetamide (DMAC) in water. It is found in this study that nitrate has significant interference on the determination of DMAC. A novel dual-wavelength spectrophotometry is proposed for the determination of DMAC in water samples containing nitrate. The results indicate that the interference of nitrate is well eliminated using wavelength of 194.0nm and 219.0nm for the determination of DMAC. The recovery rates of the method are 100%～102% and the RSD are less than 4%.
