现代食品XIANDAISHIPIN158/分析检测AnalysisandTestingdoi:10.16736/j.cnki.cn41-1434/ts.2023.13.039GC-ECD法同时测定红参中的拟除虫菊酯和有机氯类农药残留SimultaneousDeterminationofPyrethroidandOrganochlorinePesticideResiduesinRedGinsengbyGC-ECD◎蒋忠岑1,2，黄文平1,2，熊双1,2，郑容2（1.重庆三峡学院生物与食品工程学院，重庆404000；2.重庆市万州食品药品检验所，重庆404000）JIANGZhongcen1,2,HUANGWenping1,2,XIONGShuang1,2,ZHENGRong2(1.CollegeofBiologicalandFoodEngineering,ChongqingThreeGorgesUniversity,Chongqing404000,China;2.ChongqingWanzhouFDAInspectionInstitute,Chongqing404000,China)摘要：目的：建立GC-ECD法同时测定红参中的拟除虫菊酯和有机氯类农药残留。方法：红参经乙腈提取再经FLORISIL固相萃取柱净化，采用DB-1701P毛细管柱（30m×0.25mm，0.25μm）程序升温进行分离，采用电子捕获检测器测定。结果：27种农药在各自浓度范围内线性关系良好，相关系数在0.9980～0.9999，检出限在0.004～0.115mg·kg-1，平均回收率在78.9%～109.8%，相对标准偏差在0.13%～8.63%；5批样品中，2批样品检出农药残留。结论：该方法操作简单，精密度高，再现性好，可同时测定红参中的5种拟除虫菊酯和22种有机氯农药的残留。关键词：有机氯；拟除虫菊酯类；红参；气相色谱法；固相萃取Abstract：Objective:AmethodwasappliedforSimultaneousdeterminationofpyrethroidandorganochlorinepesticideresiduesinredginsengbygaschromatography-electroncapturedetector(GC-ECD).Method:Redginsengsampleswereextractedwithacetonitrile,thencleanedupusingFLORISILcolumn,andfinallyseparatedbyaDB-1701P(30m×0.25mm,0.25μm)columnwithtemperatureprogramming,anddetectedquantitativelybygaschromatography-electroncapturedetector(GC-ECD)．Result:Theexternalstandardmethodwasusedforquantification.Excellentlinearitieswereachievedforalltargetanalyteswithgoodlinearcorrelationandcorrelationcoefficientsrangedfrom0.9980～0.9999.Thelimitsofdetection(LODs)rangedfrom0.004mg·kg-1to0.115mg·kg-1.Therecoverieswereintherangeof78.9%～109.8%,withrelativestandarddeviations(RSDs)rangeof0.13%～8.63%;atotalof2pesticideresiduesweredetectedfromthe5samplebatches.Conclusion:Theproposedmethodwassimple,acc...
