市售自然铜药材中有害元素铅、砷、镉、汞、铜的测定

目的:对全国各地25个市售自然铜药材中铅、砷、镉、汞、铜等有害元素的含量进行测定,以评价自然铜药材质量。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,氢化物发生-原子吸收分光光度法对砷、汞进行测定。结果:25个自然铜药材中均不同程度地检出铅、砷、镉、汞、铜等有害元素,其中铅:2.3508-61.4289 mg·kg-1,砷:12.2084-37.5905 mg·kg-1,镉:0.6422-7.3669 mg·kg-1,汞:6.7171-223.6923 mg·kg-1,铜:0.0165-67.0561 g·kg-1。结论:应加强对自然铜药材中有害元素的检测及控制,以保证自然铜的用药安全。

Determination of the harmful elements(lead, cadmium, arsenic, mercury, copper)in medicinal pyritum

Objective:The harmful elements(lead,cadmium,arsenic,mercury,copper) in 25 medicinal pyritum bought from different cities,were determined to evaluate the quality of pyritum medicine.Methods:Lead and cadmium were determined by graphite furnace atomic absorption spectrophotometry,copper was determined by flame atomic absorption spectrometry,arsenic and mercury were determined by hydride generation atomic absorption spectrophotometry.Result:Different levels of harmful elements(lead,cadmium,arsenic,mercury,copper) were detected in all 25 pyritum medicine,includeing Lead: 2.3508-61.4289 mg·kg-1,arsenic:12.2084-37.5905 mg·kg-1,cadmium:0.6422-7.3669 mg·kg-1,mercury: 6.7171-223.6923 mg·kg-1,copper:0.0165-67.0561 g·kg-1.Conclusion:The detection and control of harmful elements in pyritum medicine should be strengthened,in order to ensure the safety of the medication pyritum.