食品科学 ›› 2004, Vol. 25 ›› Issue (10): 239-241.

• 分析检测 • 上一篇    下一篇

近红外光谱法非破坏快速检测生菜中硝酸盐含量

 王多加, 林纯忠, 钟娇娥   

  1. 深圳市无公害农产品质检站,华南农业大学资源环境学院
  • 出版日期:2004-10-15 发布日期:2011-10-24

Non-destructive Rapid Determination of Nitrate in Vegetable by NIRS

 WANG  Duo-Jia, LIN  Chun-Zhong, ZHONG  Jiao-E   

  1. 1.Shenzhen Inspection Station of Non-Pollution Agricultural Products;2.South China Agriculture University
  • Online:2004-10-15 Published:2011-10-24

摘要: 运用傅里叶变换近红外光谱仪,以二阶导数处理光学数据,用偏最小二乘法(Partial Least-Squares Regression,PLSR)进行统计分析,对58个外观形状不同的生菜样品建立了硝酸盐含量快速检测模型。其预测结果与国标方法相比相关系数为0.9819,检测相对误差在0.56%~6.79%范围内。该方法简单、快速,无需消耗任何试剂,可满足现场快速检测的需要。

关键词: 生菜, 近红外光谱, 快速检测, 硝酸盐

Abstract: Rapid determinaton mode of nitrate in vegetable was established by using near infrared spectroscopy (NIRS), withsecond derivative and partial least square regression (PLSR), the multi-correlation coefficient is 0.9819 compared with nationalstandard method and the standard error prediction is 0.56%~6.79%. The method is not only simple and rapid, but also suitablefor fast determination in worksite with no requirement of any chemical regent.

Key words: vegetable, near infrared spectroscopy (NIRS), fast detection, nitrate