分光光度法测定调味品中氨基酸态氮的研究

Determination of Amino Acid Nitrogen in Condiments with Spectrophotometer

采用分光光度计测定调味品中的氨基酸态氮,对影响测定结果的因素进行分析,并与甲醛滴定方法进行了比较。检出限为2μg,相对标准偏差为2.8%～5.8%,加标回收率为94.5%～100.9%。

Determine the amino acid nitrogen in condiment with spectrophotometer, analyse the factors affecting the determination of the results,and compare with the formaldehyde titration method. The detection limit is 2 μg, the relative standard deviation is 2.8 %-5.8 %, and the recovery is 94.5 %-100.9 %.