食品科学 ›› 2004, Vol. 25 ›› Issue (10): 276-279.

• 分析检测 • 上一篇    下一篇

几种肉制品中硝酸盐含量的测定

 丁旭光, 张捷莉, 刘志强, 李铁纯   

  1. 鞍山师范学院化学系
  • 出版日期:2004-10-15 发布日期:2011-10-24

Determination of Nitrate in Meat Products

 DING  Xu-Guang, ZHANG  Jie-Li, LIU  Zhi-Qiang, LI  Tie-Chun   

  1. Chemistry Department of Anshan Normal University
  • Online:2004-10-15 Published:2011-10-24

摘要: 以α-萘胺为显色剂,利用紫外可见分光光度计,测定了鞍山市市售的几种肉制品中硝酸盐的含量。本实验进一步探究了实验的最佳条件:酸度、温度、显色剂的用量和显色时间。结果表明:pH值在3~4之间,温度在15~25℃之间,显色剂用量为2ml,显色时间在20~40min,显色稳定,样品吸光度无明显变化,实验能达到较理想的效果。

关键词: 硝酸盐, 亚硝酸盐, 紫外&mdash, 可见分光光度法

Abstract: The content of nitrate in meat products sold in Anshan City was determined by UV method with α-naphthaleneused as a chromogenic reagent. The top conditions, such as, acidity, temperature, consumption of chromogenic reagent wereinvestigated. The results showed that the stability was good and the absorbance fluctuate little when pH was 3~4, thetemperature was at 15~25℃, the chromogenic reagent was 2ml and the time of coloration was 20~40min. The final result wassatisfied.

Key words: nitrate, nitrite, UV