食品中糖精钠的导数光谱分析

Analysis of sodium saccharin in foods by derivative spectrum

应用４阶导数光谱测定食品中糖精钠，样品及加标样品在２３２．２ｎｍ和２２４，８ｎｍ出现了糖精钠的特征吸收峰，样品提取液加标回收率为７８．３％～１１２．７％，均值为９７．４％，加标样品回收率为７３．８％～１０８．６％，均值为９４．４％。样品测定相对标准偏差为０．０％～３．８％。

Sodium saccharin in food was analyzed by derivative spectrum. The peaks of sodium saccharin in the samples and the added standards appeared at 232. 2 nm and 224. 8 nm at the fourth derivative spectrum. The recoveries of sodium saccharin in samples extracted by ether and then added with standards were 78.3%￣112.7%, and the recoveries of the added standard samples were 73.8%￣108.6%. The relevant standard deviation of samples were 0%￣3.8%.