宁夏3种中药材农药残留量及重金属含量分析

Analysis of Pesticide Residues and Heavy Metal Element Content in Three Traditional Chinese Medicinal Materials in Ningxia

为了清楚掌握宁夏地区金银花、红花、艾3种中药材中的农药残留量和重金属含量,采用液相色谱串联质谱法与气相色谱串联质谱法测定金银花、红花、艾3种中药材中71种农药残留量;采用原子吸收分光光度法测定铅、镉、铜3种重金属含量,采用原子荧光光谱法测定砷、汞2种重金属含量。结果表明,采集的金银花、红花、艾样品中共检出农药9种,分别是吡虫啉、啶虫脒、虫螨腈、甲氰菊酯、氰戊菊酯、伏杀硫磷、联苯菊酯、氯吡脲、嘧菌酯,含量在0.020~0.370 mg·kg^(-1);砷、汞、铅、镉4种重金属含量均在合格范围内,其中金银花与红花中铜含量为6.59~12.80 mg·kg^(-1),艾中铜含量为9.00~22.60 mg·kg^(-1),有2个样品中铜含量超标。宁夏地区金银花、红花、艾3种中药材样品内的农药残留量和重金属含量存在一定安全风险,应继续监测,进一步把握中药材的质量安全。

In order to carry out the determination of pesticide residues and heavy metal element content in honeysuckle,safflower and wormwood,which cultivated in Ningxia province liquid chromatography-tandem mass spectrometry and gas chromatography-tandem mass spectrometry were used to detect 71 pesticide residues in three traditional Chinese herbs;Atomic absorption spectrophotometry was used to detect the content of plumbum(Pb),cadmium(Cd)and copper(Cu).Atomic fluorescence spectroscopy was used to detect the content of arsenic(As)and mercury(Hg).A total of 9 pesticides were detected in the collected samples of honeysuckle,safflower,and wormwood,including imidacloprid,acetamiprid,chlorfenapyr,fenpropathrin,fenvalerate,phosalone,bifenthrin,forchlorfenuron and azoxystrobin,with concentrations ranging from 0.020 to 0.370 mg·kg^(-1);The content of As,Hg,Pb and Cd are all in permissible range.The content of Cu in honeysuckle and safflower is 6.59~12.80 mg·kg^(-1),while in wormwood is 9.00~22.60 mg·kg^(-1).Among them,the content of Cu in two samples exceeds the standard.There are safety risks associated with pesticide residues and heavy metal elements in honeysuckle, safflower, and wormwood in Ningxia, and further monitoring should be carried out to clarify the quality and safety of these herbs.