微波消解-ICP-OES法测定岷县当归中的矿质元素

Determination of mineral elements of Angelica sinensis in Minxian by ICP-OES with microwave digestion

采用浓HNO3/H2O2混合酸体系,以微波消解法对岷县当归样品进行前处理,利用全谱直读电感耦合等离子体发射光谱法（ICP-OES法）,对样品中矿质元素的组成及含量进行了测定和分析。结果表明,从岷县当归中检测出15种矿质元素,分别为K、Na、Al、B、Ba、Ca、Fe、Mg、Mn、P、S、Si、Sr、Zn、Cr,其中常量元素有K、Ca、Mg、P、S,微量元素有Al、B、Ba、Fe、Mn、Si、Sr、Zn等,未检测出Tl、Ti、Sn、Cu等元素,以及Pb、Cd等重金属元素,15种元素的RSD值在1.01%-19.01%。研究结果可为岷县当归食用药用价值的进一步开发利用提供一定的理论和科学依据。

The samples were prepared by microwave digestion with HNO3 and H2O2. The constituents and content of mineral elements of Angelica sinensis in Minxian were determined and analyzed by inductively coupled plasma optical emission spectrometry（ ICP-OES）. The results show that fifteen kinds of mineral elements are quantitatively tested from Angelica sinensis in Minxian,including K,Na,Al,B,Ba,Ca,Fe,Mg,Mn,P,S,Si,Sr,Zn and Cr. The macro elements include K,Ca,Mg,P and S. The trace elements include Al,B,Ba,Fe,Mn,Si,Sr and Zn,etc. The trace elements of Tl,Ti,Sn,Cu and the heavy metal elements of Pb,Cd are not determined. The RSD of fifteen elements is between 1. 01% - 19. 01%. The results of studies will provide theoretical basis and scientific data for the further development and utilization on the edible and medical value in Angelica sinensis in Minxian.