黄精中多种金属元素含量的原子吸收分光光度法测定

Determination of metal elements in rhizome of polygonatum by atomic absorption spectrometric method

采用V(HNO_3):V(HClO_4):V(H_2O_2)=2:1:1的改进混合酸体系对黄精样品作消解处理,利用火焰原子吸收分光光度法和石墨炉原子吸收法分别测定其中金属元素的含量.结果表明,黄精中含有较丰富的矿物元素,K,Na,Cu,Zn,Fe,Ca,Mg,Mn,Cr9种元素含量分别为0.396 28%,6.799×10^(-2)%,3.7×10^(-4)%,16.9×10^(-4)%,1.279×10^(-2)%,0.175 14%,5.480×10^(-2)%,21.3×10^(-4)%,0.5×10^(-4)%.

Digested by improved mixed acids V（ HNO3 ） ： V（ HCIO4 ） ： V （ H2 O2 ） = 2：1： 1, the mental elements in rhizome of polygonatum were determined by tiame and graphite furnace atomic absorption spectrometric method. The results showed that there were abundant metal elements contained in rhizome of polygonatum, the contents of K,Na,Cu ,Zn,Fe ,Ca,Mg,Mn ,and Cr were 0.396 28% ,6. 799 x 10 ^-2% ,3.7 x 10 ^-4%, 16.9 x 10^-4% ,1. 279 x 10^2z% ,0. 175 14% ,5.480 x 10^-2% ,21.3 x 10^-4% ,and 0.5 x 10^-4% respectively.