关键词: 电感耦合等离子体质谱, 灵芝孢子粉, 锗, 硒

Abstract: The method of determination for germanium and the selenium in the Ganoderma lucidum spore powder by means of the inductive coupling plasma mass spectrum(ICP-MS) with microwave digestion was established,taking 115In as internal standard. The limited of detection of germanium is 0.0003 mg/L(3δ),and that of selenium is 0.0005 mg/L(3δ). The standard curve range of germanium is 0.0005 to 0.005 mg/L(r=0.999 9),and that of selenium is 0.001 to 0.25 mg/L(r=0.9999). The relative standard deviation of germanium is 3.8%(n=10),and that of selenium is 1.7%(n=10). The recovery of germanium is 94% to 105%,and that of selenium is 93% to 104%.

Key words: ICP-MS, spore powder, germanium, selenium