红外光谱法测定棉籽油酸单乙醇胺硫酸酯盐的含量

Infra-red Spectrometric Determination of Content of Sodium Cottonseed Fatty Acid Alkanolamide Sulfate

利用棉籽油酸单乙醇胺硫酸酯盐在1244cm-1处的红外特征吸收峰,测定其含量,相对误差不超过4%,准确度优于对甲苯胺法.棉籽油酸单乙醇胺硫酸酯盐的回收率为96.8%～97.3%,标准偏差为0.037%.操作简便快捷,是一种可靠实用的测定方法.

The content of Sodium Cottonseed Fatty Acid Alkanolamide Sulfate could be determinted by means of its characteristic peak of 1244cm1 in infrared spectra. It was demonstrated that technique, with a relative error with in 4%, is of highter accuracy in detecting the Sodium Cottonseed Fatty Acid Alkanolamide Sulfate content than the ptoluidine method. The recovery ranged from 96.8%~97.3% and the standard deviation was 0.037%. The result show that it was easy and rapid. It was a reliable way