食品科学 ›› 2008, Vol. 29 ›› Issue (7): 352-355.

• 分析检测 • 上一篇    下一篇

液相色谱法测定蔬菜中的硝酸盐、亚硝酸盐

陈文生,张明时,杨琼,高庚申   

  1. 贵州师范大学贵州省山地环境重点实验室; 贵州师范大学贵州省山地环境重点实验室 贵州贵阳550001; 贵州贵阳550001; 贵州贵阳550001贵州师范大学理学院; 贵州贵阳550001毕节学院化学系; 贵州毕节551700
  • 出版日期:2008-07-15 发布日期:2011-07-28

Determination of Nitrite and Nitrate in Vegetable by HPLC

 CHEN  Wen-Sheng, ZHANG  Ming-Shi, YANG  Qiong, GAO  Geng-Shen   

  1. 1.Guizhou Provincial Laboratory for Mountainous Environment, Guizhou Normal University, Guiyang 550001, China; 2.School of Science, Guizhou Normal University, Guiyang 550001, China; 3.Department of Chemistry, Bijie University, Bijie 551700, China
  • Online:2008-07-15 Published:2011-07-28

摘要: 建立了蔬菜中NO2-、NO3-的高效液相色谱测定方法。研究表明:蔬菜中NO2-和NO3-的线性范围(以N计)为0~80mg/kg,r=0.9999;方法检出限为NO2-0.04mg/kg、NO3-0.01mg/kg;回收率为NO2-99.2%~102.4%、NO3-98.7%~99.3%,相对标准偏差分别为:0.79%和0.25%。与国标方法相比,本法操作简便、灵敏度高、快速,易于推广。  

关键词: 高效液相色谱法, 蔬菜, 硝酸盐, 亚硝酸盐

Abstract: A new high-performance liquid chromatography (HPLC) method was established to determine the contents of nitrite and nitrate in vegetable. The results showed that the determination linear ranges of both nitrate and nitrite in vegetable are 0~80 mg/kg (by calculating the mass of nitrogen),and the coefficients between concentrations and peak areas for nitrate and nitrite are 0.9999. The detection limits of nitrite and nitrate are 0.04 mg/kg and 0.01 mg/kg, respectively. The recovery rate of nitrite is 99.2%~102.4% and that of nitrate 98.7%~99.3%, and the RSD of nitrite and nitrate are 0.79% and 0.25 %, respectively. In comparison with China GB-method,the present method is simple in operation, more sensitive, and rapid, and can therefore be used widely.

Key words: HPLC, vegetable, nitrite, nitrate