Position: Home > Articles > Adopting Sodium Salicylic Acid-hypochlorous acid Spectro photography to Determine Crude Ammonia
MEAT RESEARCH
2002
(4)
44-46
水杨酸-次氯酸钠光度法测定肉中的粗氨
作 者：
桑宏庆;孙慧
单 位：
安徽技术师范学院
关键词：
水杨酸-次氯酸钠;粗氨;光度法;测定;肉
摘 要：
本文提出了一种测定肉中粗氨的新方法,可用于肉品新鲜度的检验。在常温下,NH3在亚硝基铁氰化钠的催化下于碱性介质中与次氯酸钠和水杨酸作用,生成稳定的蓝色化合物,最大吸收波长为660nm,表观摩尔吸光系数ε660为1.38×104L·mol-1·cm-1,Sandell灵敏度为0.001μg·cm-2,回归方程为:y=0.0368x-0.0019,线性范围为:0～0.5μg/ml,相关系数为0.9968,回收率在96%～103.3%之间。
译 名：
Adopting Sodium Salicylic Acid-hypochlorous acid Spectro photography to Determine Crude Ammonia
作 者：
Sang Hongqing
关键词：
salicylic acid;s odium hypochlorite;crude ammonia;spectrophotometry;determination;meat
摘 要：
A new method for t he determination of the crude ammonia in meat is presented in this pa-per.The method is based on the color reaction of ammonis -salicylic acid-sodium hypoch lirite with the presence of Na 2 Fe (CN) 5 NO in basic medium.It shows the apparent molar absorp tivity is1.38×10 4 L mol -1 .cm -1 with the wavelength at660nm.Beer's law is obeyed for the nitrogen of am monia in the range of0～5ìg /10ml.The correlation coefficient is0.99 68.The recoviries are between96%～103.3%.
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