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%.
出处
《干旱环境监测》
2008年第1期7-10,共4页
Arid Environmental Monitoring
关键词
吖啶黄
亚硝酸盐氮
褪色
分光光度法
acridine ydlow
nitrite nitrogen
fading
speetrophotometry
