海南十大功劳、大戟和凤仙花的化学元素含量研究

对海南热带石灰岩特有植物海南十大功劳、海南大戟和海南凤仙花的根茎和叶片化学元素进行了测定,比较三者化学成分特征.结果表明:3种植物根茎和叶片中K含量最高,其均值分别为12.72、11.69 g·kg^-1,其次为Ca 和Mg.海南十大功劳根茎和叶片中大量元素含量都较高,暗示该植物药用价值可能更高.Zn元素在根茎和叶片中的含量占主导地位,均值分别为14.62、11.18 mg·kg^-1.海南凤仙花Cu_叶片﹥Cu_根茎、Pb_叶片﹥Pb_根茎,与其在海南大戟和海南十大功劳中的表现不同,这表明重金属Cu和Pb在石灰岩特有植物中的来源可能具有多重性.对比我国《药用植物及制剂进出口绿色行业标准》限量指标,3种石灰岩特有植物根茎和叶片中Cu、Pb、As、Hg、Cd的含量均小于限量值,表明这3种植物在作药用资源开发利用上可排除重金属的危害性.

The Research on Characteristics of Chemical-Element Contents in Rhizome and Leaves of Mahonia oiwakensis,Euphorbia hainanensis and Impatiens hainanensis

The Hainan tropical limestone endemic plants,,Euphorbia hainanensis croizat,Impatiens hainanensis and Mabonia oiwakensis’s vhizome and leaf chemical elements were determined,by comparing the chemical composition characteristics of those there.The results showed that:the content of K was highest in the three plants in the rhizome and leaves,the mean values were 12.72,11.69 g·kg^-1; followed by Ca and Mg.Hint has some medicinal value of the three plants.A large number of element contents are higher in rhizomes and leaves of M.oiwakensis Hayata,suggesting its medicinal value may be higher.The Zn element content in the rhizome and leaves of the dominant,respectively is 14.62,11.18 mg·kg^-1.I.hainanensis Cu_leaf>Cu_leaf,Pb_rhizome >Pb_rhizome,and in M.oiwakensis Hayata and E.hainanensis behave differently,which indicates that the heavy metals of Cu and Pb in limestone unique sources in plants may have multiple.