ICP-OES测定不同产地灵芝中重金属和有害元素的含量

目的：建立电感耦合等离子发射光谱法（ICP-OES）测定灵芝中重金属及有害元素的方法并比较不同产地灵芝中的Cu、Pb、As、Cd、Hg等5种元素的含量。方法：采用恒压消解罐消解法处理灵芝供试品，用ICP—OES测定不同产地灵芝中Cu、Pb、As、Cd等4种有害元素的含量，氯化亚锡还原处理后在测汞仪上测定Hg。结果：5种元素线性关系良好，r在0．9928-1．0000；同收率在80％120％；RSD均小于20％，符合痕量分析中小于30％的要求。结论：本法灵敏度高，准确度和重复性好，可作为灵芝中重金属及有害元素的定量测定方法。

Determination of 5 elements in Ganoderma by ICP-OES

Objective: To establish a method for the determination of 5 elements(Cu,Pb,As,Cd,Hg) in Ganoderma by inductively coupled plasma optical emission spectrometry(ICP-OES),and determined samples grown in different areas. Methods: 4 elements of the digested samples were determined by ICP-OES simultaneously,and the contents were calculated by calibration curves.Hg determined by Mercury Analyzers .Results: Good linearity of calibration curves was obtained,the accuracy and the recovery met the requirement of trace analysis. Conclusion: The method is highly sensitive, with good accuracy and repeatiblity.