摘要
提出了一阶导数紫外分光光度法直接、同时测定水中ＮＯ＿３￣－和ＮＯ＿２￣－的方法。ＮＯ＿３￣－和ＮＯ＿２￣－的测定灵敏度较其它同时测定的方法分别提高８～１８倍和９～１２倍，ＮＯ＿３￣－和ＮＯ＿２￣－的最低检出限均为０．０１μｇ／ｍｌ。对合成样品分析，其相对误差＜±２％，交异系数＜３．８％。对河水、湖水、饮用水进行加标回收实验，ＮＯ＿３￣－和ＮＯ＿２￣－的回收率分别为９５．３％～１０１．３％和９７．７％～１０４．２％，与标准方法进行对照分析，ｔ检验结果表明，本方法与标准方法相比无显著性差异。
The method of direct and simultaneous determination of nitrate and nitrie in water is proposed. Dirinking water, lake water, fiver water and synthetic samlpe were determined and the results are satisfactary. The sensitivity of nitrate and nitrite increase 8～18 and 9～12 times than other simutaneous determination method respectively. The detection limits of nitrate and nitrte are all 0.01μg/mL.
出处
《抚顺石油学院学报》
1997年第1期14-17,共4页
Journal of Fushun Petroleum Institute
关键词
双波长
导数分光光度法
水分析
测定
Double-wavelength
Derivative spectrophometry
Nitrate
Nitrite
