不同净化方法对甘草有机氯农药残留测定的比较研究  

Comparative study on determination of organochlorine pesticide residues in Glycyrrhiza uralensis by different purification methods

作　　者：廖予菲[1] 王萍[1] 张瑞瑞[1] 程茜菲[1] LIAO Yu-fei;WANG Ping;ZHANG Rui-rui;CHENG Qian-fei(Faculty of Medicine,Shaanxi Institute of International Trade and Commerce,Xi’an 712046,China)

机构地区：[1]陕西国际商贸学院医药学院,西安712046

出　　处：《湖北农业科学》2022年第20期141-148,共8页Hubei Agricultural Sciences

基　　金：陕西省中医药管理局科研项目(2021-ZZ-ZY006);陕西省教育厅科研计划项目(21JK0520;21JY002)。

摘　　要：以甘草(Glycyrrhiza uralensis)作为研究对象,采用气相色谱法,分别通过磺化法及QuEChERS法进行样品净化处理,对2种净化方法进行评价。结果表明,2种净化方法所制样品中杂质对9种有机氯测定均无干扰,相对而言,QuEChERS处理效果更佳,杂质较少。对比研究试验中,重复性、回收率、检测限测定结果均表明,QuEChERS法略优于磺化法。QuEChERS法操作简单,步骤少,能专属、快速、灵敏、准确地实现样品处理分析,可作为甘草样品农药残留量测定的净化方法。Taking Glycyrrhiza uralensis as the research object,gas chromatography was used to purify samples by the sulphonation method and QuEChERS method,and the two purification methods were evaluated. The results showed that the impurities in the samples prepared by the two purification methods had no interference to the determination of 9 organochlorines,the treatment effect of QuEChERS was better and the impurities were less. In the comparative study,the results of repeatability,recovery rate and detection limit showed that QuEChERS method was slightly better than the sulfonation method. QuEChERS method had the advantages of simple operation and few steps. It could be used as a purification method for the determination of pesticide residues in licorice samples,which was exclusive,rapid,sensitive and accurate.

关 键 词：有机氯农药 甘草(Glycyrrhiza uralensis) 净化方法 QuEChERS法 

分 类 号：S481.8[农业科学—农药学]