摘要
用抑制型离子色谱法定量测定了NO2-和NO3-.两种阴离子在最佳色谱条件下,8 m in内达到基线分离.对于NO2-,检出限为0.002 mg/L,相对标准偏差为2.58%,线性范围0.2 mg/L^20 mg/L,相关系数0.999 6.对于NO3-,检出限为0.011 mg/L,相对标准偏差为2.01%,线性范围0.3 mg/L^30 mg/L,相关系数0.999 2.该法用于蔬菜中NO2-和NO3-的测定,结果良好.
NO2^-and NO3^- were determined with the method of suppressed ion chromatography. Under the optimum chromatographic conditions, NO2^- and NO3^- could be well separated within 8 min. For NO2^-, the detection limit was 0.002 mg/L, relative standard deviation was 2.58 %, liear range 0.2 mg/L - 20 mg/L, correlation coefficient 0.999 6. For NO3^-, the detection limit was 0.011 mg/L, relative standard deviation was 2.01%, linear range 0. 3 mg/L - 30 mg/L, correlation coefficient 0.999 2. This method was applied to determine NO2^-and NO3^- in vegetables with good result.
出处
《化学研究》
CAS
2006年第2期86-88,共3页
Chemical Research
基金
雁北师范学院科学研究基金资助项目(2004K06)
