摘要
目的：建立离子色谱法测定水中亚硝酸盐氮的检测方法。方法：通过对淋洗液的选择，以Na2CO3-NaHCO3混合液为淋洗液，使亚硝酸盐氮与Cl^-、NO3^-—N、SO4^2-同时测定。结果：方法最低检出限为5．0μg／L，标准曲线线性范围0．05～5．00mg／L，相关系数0．9997，相对标准偏差RSD〈4．2％，回收率92．5％～104．7％。结论：本方法操作简单，适于基层单位日常检测中需要。
Objective：To establish a method to determine nitrite nitrogen in the water by ion chromatography. Methods：Sodium carbonate - sodium bicarbonate was selected as mobile phase. By optimizing the experiment condition, the method can be used to determine nitrite nitrogen, chlorine ion, nitrate nitrogen and sulfate ion simultaneously. Results ：The detection limit of the method was 5.0 μg/ml. The linear range of the calibration curve was 0. 05 - 5.00 mg/L. The correlation coefficients for the standard curves were above 0. 999. The relative standard deviations were less than 4. 2%. The recoveries of the method ranged from 92. 5% to 104. 7%. Conclusion ：The method is simple and has been applied to the daily determination of nitrite nitrogen in the skeleton units.
出处
《中国卫生检验杂志》
CAS
2007年第2期263-264,共2页
Chinese Journal of Health Laboratory Technology
关键词
亚硝酸盐氮
离子色谱法
Nitrite nitrogen
Ion chromatography
