不同前处理方法对检测蜂胶总砷含量的影响——利用氢化物-原子荧光技术(Ha-AFS)

Comparison of Determination of Selenium in Propolis Treated by Different Methods with Hydride Generation-Atomic Fluorescence Spectrometry

采用湿法消化和干法灰化两种不同方法对蜂胶进行前处理,并测定两种方法在对蜂胶中砷含量测定过程中的影响差异。结果表明,湿消解法测定的回收率范围为92%~102%;干灰化法测定的回收率为86%~100%。两种方法处理的样品砷回收率均有波动,波动范围分别为4%和7%。湿法消解处理后的砷回收率显著大于干法灰化（p〈0.05）,两者测得的浓度比例范围在89%~98%之间,且均小于1。研究结论对测定蜂胶中砷含量采用合适的样品前处理方法具有参考作用。

In order to compare the content of arsenic from propolis treated by different digestion methods,wet digestion and dry digestion were used in our work.The result showed reclaimable rate by wet digestion and dry digestion were 92 %-102 % and 86 %-100 % respectively. Wide range 4 % and 7 % were existed in reclaimable rate from two methods. Reclaimable rate of wet digestion was higher than dry digestion prominently （p〈0.05）, and the proportion of wet digestion/dry digestion rate was from 89 % to 98 %. The research conclusion was referential signification for the treated method of sample used in mensuration of propolis.