市售紫石英药材中有害元素铅、砷、镉、汞、铜的测定

Determination of the harmful elements(lead,arsenic,cadmium,mercury,copper) in commercially available medicinal amethyst

目的:对全国各地14个市售紫石英药材中铅、砷、镉、汞、铜等有害元素的含量进行测定,以评价紫石英药材质量。方法:采用石墨炉原子吸收分光光度法对铅、镉进行测定,火焰原子吸收法对铜进行测定,原子荧光光度法对砷、汞进行测定。结果:14个紫石英药材中均不同程度地检出铅、砷、镉、汞、铜等有害元素,其中铅:0.0983-459.1912 mg.Kg-1,砷:0.5169-178.9354 mg.Kg-1,镉:0.2192-4.1326 mg.Kg-1,汞:0.0582-1.6141 mg.Kg-1,铜:2.8712-149.6343 mg.Kg-1。结论:应加强对紫石英药材中有害元素的检测及控制,以保证紫石英的用药安全。

Objective： Measured the harmful elements（lead,arsenic,cadmium,mercury,copper etc.）in 14 commercially available medicinal amethyst across the country,for evaluating the quality of amethyst medicine.Methods： determine lead and cadmium with graphite furnace atomic absorption spectrophotometry,copper were determined by flame atomic absorption method,arsenic and mercury were determined by atomic fluorescence spectrometry.Results： Different levels of harmful elements（lead,arsenic,cadmium,mercury,copper etc.）were detected in 14 Amethyst medicine,including lead：0.0983-459.1912 mg·Kg-1,arsenic：0.5169-178.9354 mg·Kg-1,Cadmium：0.2192-4.1326 mg·Kg-1,Mercury：0.0582-1.6141 mg·Kg-1,copper：2.8712-149.6343 mg·Kg-1.Conclusion： The detection and control of hazardous elements in amethyst medicine should be strengthened,in order to ensure the safety of medication amethyst.