食品科学 ›› 2004, Vol. 25 ›› Issue (5): 158-160.
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桑宏庆, 黄玉全, 张虎
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SANG Hong-Qing, HUANG Yu-Quan, ZHANG Hu
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摘要: 提出了一种测定食品中锡含量的新方法。方法基于锌可还原Sn4+为Sn2+,而Sn2+可与磷钼酸铵反应生成磷钼蓝,锡在0~20μg/ml内符合比尔定律。检测限和回收率分别可以达到0.001μg/ml 和96.9%~102.06%。
关键词: 锡, 锌, 磷钼蓝, 光度法
Abstract: A new method is presented for the determination of tin in food. The method is based on that zinc can be reduced toSn4+ to Sn2+. The reaction of Sn2+ with phosphomolybdate ammonium formed blue substance on certain conditions. Beer’s lawwas obeyed in the range of 0~20g/ml for tin. The detection limit was 0.001g/ml, and the recovery was 96.9%~102.06%.
Key words: tin, zinc, phosphomolybdate blue, spectrophotometry
桑宏庆, 黄玉全, 张虎. 锌还原锡(Ⅳ)磷钼蓝光度法测定锡[J]. 食品科学, 2004, 25(5): 158-160.
SANG Hong-Qing, HUANG Yu-Quan, ZHANG Hu. Determination of Tin with Phosphomolybdate Blue Spectrophotometry by Tin (Ⅳ)—Reduced Zinc[J]. FOOD SCIENCE, 2004, 25(5): 158-160.
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