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《Chinese Traditional and Herbal Drugs》 2009-01
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Investigation on residue of triadimefon and its metablites in ginseng

DAI Bo1,JIN Hong-yu2,TIAN Jin-gai2,SUN Peng3,LIN Rui-chao2(1.Air Force General Hospitol,Beijing 100036,China;2.National Institute for the Control of Pharma ceuticaland Biological Product,Beijing 100050,China;3.Department of Pharmacy,Hospilal Affiliated to Yanbian University,Yanji 133000,China)  
Objective To set up a clean-up method using gel permeation chromatography(GPC)and ENVI-Carb-SPE.The residues of triadimefon and its metablites,triadimenol A and triadimenol B in ginseng were detected by GC-MS with negative chemical ionization(NCI).Methods The sample was extracted with acetone and the extract was cleaned using GPC and ENVI-Carb-SPE.Based on GC-MS(NCI)the pesticides were separated on a DB-5MS column using a temperature program and were detected with a mass selective detector in selective ion monitoring(SIM)mode.The reference solution was prepared by the blank sample extract to overcome the matrix effect,the external reference method was used to detect.Results Three pesticides were separated within 10 min.The average spiked recoveries in three levels were 90%—105% with relative standard deviations(RSD)below 6%(n=6)in roots and stems.The limits of detection(LOD)of triadimefon and triadimenols were 0.1 and 10 μg/L.The precision was below 2%(n=6).Conclusion The method is sensitive for the residue analysis of three pesticides and could be used to the triadimefon and triadimenols detection and security control in ginseng.
【Fund】: “十一五”国家科技支撑项目“中药材资源与生产标准规范”(项目号:2006BAI21B07)
【CateGory Index】: R284
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