SPECIATION ANALYSIS OF TRACE ELEMENTS IN GANODERMA ATRUM
研究黑灵芝中微量元素含量及溶出特性对黑灵芝质量控制、灵芝产品的合理开发利用有重要作用。用ICP-MS法同时测定黑灵芝中十余种微量元素的初级形态含量及分布,考察了黑灵芝中微量元素在不同极性溶剂中的浸出率,并通过国家一级标准物质验证了分析结果的准确性。结果表明,随着溶剂极性增大,大部分元素的溶出率增大。水提取黑灵芝,铜、锰、铁、锌等元素的提取率均小于40%,对黑灵芝样品进行了加标回收试验,回收率在88.2%~110.6%。It is important to study the trace element contents and transference characteristics and element speciation in the extract of Ganoderma atrum for the quality control and reasonable exploitation. In this experiment the contents and speciation of more than ten elements in Ganoderma atrum were simultaneously determined with microwave assisted digestion of sample combined with inductively coupled plasma mass-spectrometry (ICP-MS). The dissolution percentage of trace element in different solvents were also studied and the veracity of the analytical results were validated with CRMs′ under the same conditions.The results indicated that the dissolution percentage of most elements in solvents were increased with its polarities. In the aqueous solution of the Ganoderma atrum, the extraction percentage of Cu, Mn, Fe, Zn were all lower than 40%. The recoveries of the elements were ranged from 88.2% to 110.6%.