能量色散X射线荧光光谱快速测定山楂中As、Cr、Pb含量-《西部中医药》

文章信息/Info

Title:: The Contents of As, Cr and Pb in Hawthorn Determined by EDXRF Rapidly

Author(s):: WANG Yi, FANG Ping, LI Jing, ABuDi·ReHeManWuJiaBuDuLa, ZHANG Shiwen, QI Xueyong△; School of Pharmacy, Jiangsu University, Zhenjiang 212000, China

Keywords:: EDXRF; As; Cr; Pb; rapid determination; condition screening; hawthorn

摘要:: 目的：探讨山楂中有害金属元素砷(As)、铬(Cr)、铅(Pb)的含量测定方法。方法：运用能量色散X射线荧光光谱(EDXRF)法测定山楂中的有害金属元素As、Cr、Pb的含量，并从样品颗粒粒径、紧实度、含水量等方面对测量条件进行选择。结果：筛选得到的EDXRF最佳测量条件为：颗粒粒径200目，紧实度30 Mpa，压片30秒，含水量＜5%。将该条件下的测量结果与电感耦合等离子体原子发射光谱法(ICP-AES)对比，结果准确，可信。结论：EDXRF法测定准确，适用于大量中药金属元素的快速测定。

Abstract:: Objective: To discuss the determination methods for the contents of harmful metal elements As, Cr and Pb in hawthorn. Methods: The contents of As, Cr and Pb in hawthorn were detected by energy-dispersive X-ray fluorescence (EDXRF), the detection conditions were chosen in the light of the size of particle, the degrees of ramming, moisture content and othes of the samples. Results: The optimal detection conditions of EDXRF were: particle size 200meshes; the degrees of ramming 30 Mpa; tablet compressing for 30 s and moisture content＜5%. The results detected under the conditions were compared with ICP-AES, the results were accurate and reliable. Conclusion: The method of EDXRF is accurate and suitable for rapid determination of the elements in the herbs