ICP-AES法分析灵芝中的微量元素

Analysis of Twenty Trace Elements in Ling Zhi by ICP-AES

采用湿法消解,ICP-AES法分析不同原料的两种灵芝子实体、灵芝子实体根部、灵芝混合物、灵芝破壁与不破壁孢子粉中的20种微量元素Al,As,Ca,Cd,Co,Cr,Cu,Fe,Ge,Hg,K,Mg,Mn,Na,Ni,P,Pb,S,Se,Zn的含量。结果表明:不同灵芝样品中的矿物元素含量很丰富,其中元素K,Ca,Mg,Fe,Zn,P,S含量较高,主要存在的微量元素有:Cu,Co,Cr,Ni;具有潜在生理毒性的元素为Al,As,Hg,Pb,Cd,抗癌功效元素Se和Ge在所有灵芝样品中并未测得。孢子粉中重金属元素含量相对灵芝原料更低些,灵芝混合物中有添加的功效元素Fe和Se,灵芝根部切片样品中的Ca,Cu,Zn含量与其他样品都要高,不同品种的灵芝原料中的微量元素含量存在一定的差异性。

Twenty trace elements, Al, As, Ca, Cd, Co, Cr, Cu, Fe, Ge, Hg, K, Mg, Mn, Na, Ni, P, Pb, S, Se and Zn were determined by ICP- AES with wet digestion from two kinds of different Ling Zhi fruitbody materials （Zhongzhi and Xianyuan）, Ling Zhi root, Ling Zhi mixture, unbroken and broken Ling Zhi spore powder. The common feature about the element content showed that there were rich trace elements in different Ling Zhi materials, and the concentrations of K, Ca, Mg, Fe, Zn, P and S in all kinds of Ling Zhi samples were relatively high. Besides, there were trace elements, Cu, Co, Grand Ni, and potentially physiologically toxic elements, Al, As, Hg, Pb and Cd, in all samples. Elements Se and Ge with antieancer efficacy were not found in Ling Zhi samples. The concentrations of heavy metal elements were lower in spore powders than in other Ling Zhi samples. Trace element contents in the broken and unbroken spore powders showed minor difference, The concentrations of Fe and Se in Ling Zhi mixtures were obviously higher than in other kinds of Ling Zhi samples, due to factitious addition of these elements to Ling Zhi mixture sample. There was some difference between two kinds of Ling Zhi fruitbody from deferent plant places, which may have some relations with the soil and environment. The concentrations of Ca, Cu and Zn in Ling Zhi root were higher than in other Ling Zhi materials. According to the analyses, these elements in Ling Zhi were helpful to improving cardiovascular functioru