海南冰糖草中4种重金属元素含量分析

Content Analysis of Four Heavy Metals in Scoparia dulcis L.from Hainan Province

目的：建立海南产冰糖草中重金属元素含量测定方法,测定其重金属元素含量。方法：采用氢化物原子荧光法建立冰糖草中重金属砷、汞、铅、镉元素的分析检测方法。结果：4种重金属元素的线性相关系数为0.9991-0.9999,精密度小于2.74%,加标回收率为95%~102.3%,RSD≤3.36%。冰糖草中重金属元素含量均符合绿色中药标准。结论：该方法简便、准确、稳定,可用于冰糖草的质量控制。

Aim：To establish the methods for detection of heavy metal contents in the Scoparia dulcis L from Hainan province. Methods ：The contents of As, Hg, Pb, Cd were detected by hydride generation a- tomic fluorescence spectrometry. Results ： The linear correlation coefficients of As, Hg, Pb, and Cd were O. 9991 -0. 9999; the precisions were less than 2.74% ; the recovery was 95% - 102.3% with RSD of less 3.36%. Levels of heavy metals in the Scoparia dulcis L. were within the extent of green standard for traditional Chinese medicine. Conclusion：The detection method is accurate, reliable, quick and smiple for the quality control of the Scoparia dulcis L.