吖啶黄褪色分光光度法测定环境水样中的亚硝酸盐氮  

Determination of Nitrite Nitrogen in Environmental Water Using Acridine Yellow Fading Spectrophotometry

作　　者：谢嵘[1] 

机构地区：[1]淮北市环境保护监测站,安徽淮北235000

出　　处：《干旱环境监测》2008年第1期7-10,共4页Arid Environmental Monitoring

摘　　要：利用在酸性介质中，吖啶黄与亚硝酸根反应并在波长436啪处的吸光度与亚硝酸根浓度呈线性关系，提出并建立了测定亚硝酸盐氮的新方法。亚硝酸盐氮含量在0～300μg/L内符合比尔定律。本方法的检出限为0．004mg/L。实验室内相对标准偏差不超过2．7％，加标回收率在93％～112％之间。The reaction between acridine yellow and nitrite nitrogen in acid medium was studied. There was a linear relation between the absorbency measured at 436nm and concentration of nitrite. The content of nitr/te nitrogen was obeyed the Beer＇s law in range of 0-300μg/L. This method detection limit was 0.004 mg/L. The relative standazd deviation was under 2.7% and recovery rate was 93% - 112%.

关 键 词：吖啶黄 亚硝酸盐氮 褪色 分光光度法 

分 类 号：X830.2[环境科学与工程—环境工程]