藏药木藤蓼中20种无机元素质量分数测定

Determination of 20 Kinds of Inorganic Elements of Fallopia Aubertii L.Henry Holub

通过测定木藤蓼药材中无机元素的种类和质量分数,比较不同地区木藤蓼药材中无机元素的异同点.采用微波消解法消解木藤蓼药材,采用ICP-OES法测定铝(Al),硼(B),钡(Ba),钙(Ca),铁(Fe),钾(K),锂(Li),镁(Mg),锰(Mn),钼(Mo),钠(Na),磷(P),锶(Sr),钛(Ti),铜(Cu),锌(Zn)等16种元素的质量分数;采用原子荧光光谱法测定汞(Hg)和砷(As)两种元素的质量分数;采用原子吸收光谱法测定铅(Pb)和镉(Cd)两种元素的质量分数;采用聚类分析法分析不同地区木藤蓼中无机元素的差异性.结果表明:药材中20种元素质量分数最高的是K;Li和Mo两种元素在11批药材中均未检出;第9,10批药材中不含B元素.Hg,As,Cu,Pb,Cd等5种重金属元素质量分数测定结果显示,第7批药材Cu质量分数超标,其他批次药材的重金属元素质量分数均符合国家标准.不同批木藤蓼药材中无机元素的种类和质量分数存在差异性,重金属元素的超标可提示用药的安全性.

By measured the types and contents of inorganic elements in medicinal herbs of Fallopia aubertii L.Henry Holub.and analyzed the similarities and differences of inorganic elements of Fallopia aubertii L.Henry Holub from different regions.The microwave digestion method was used to digest Fallopia aubertii L.Henry Holub,and the ICP-OES method was used to determine the content of 16 elements,such as Al,B,Ba,Ca,Fe,K,Li,Mg,Mn,Mo,Na,P,Sr,Ti,Cu,Zn,etc.;Atomic fluorescence spectrometry was used to determine the content of two elements,such as Hg,As;Atomic absorption spectrometry was used to determine the content of two elements,such as Pb,Cd;Cluster analysis was used to analyze the differences in inorganic elements in Fallopia aubertii L.Henry Holub.The highest content of 20 elements in medicinal materials is K;none of them were detected in 11 batches of 2 kinds of medicines,such as Li and Mo;B elements were not included in the 9th and 10th batches of medicines;Hg,As,Cu,Pb,and Cd contents measurement results showed that only the content of Cu in the seventh batch of medicinal materials exceeded the standard,and the content of heavy metal elements in other batches of medicinal materials met the national standards.There were differences in the types and contents of inorganic elements of Fallopia aubertii L.Henry Holub,and the“exceeding standard”of heavy metal elements indicated the safety of medication.