title: Fast and versatile multiresidue method for the analysis of botanical insecticides on fruits and vegetables by HPLC/DAD/MS.
abstract: A simple multiresidue method for screening analysis of 12 botanical insecticides used by organic farmers has been developed. The method involves a rapid and small-scale extraction procedure with acetonitrile. For all fruit and vegetable samples, there was no need for clean up. Rotenone, azadirachtin, ryanodines, and pyrethrins can be separated by high-performance liquid chromatography, quantified, and confirmed with a diode array detector (DAD) and atmospheric pressure chemical ionization mass spectrometry (APCI-MS) in the select ion-monitoring mode (SIM). The majority of pesticide recoveries for various fruits and vegetables were >70% in the concentration range from 0.01 to 5 mg/kg. The limit of quantitation for most of the pesticides was 0.01 mg/kg, with the majority of relative standard deviations (RSD) mostly below 10%.
authors.affiliation: Dipartimento di Tossicologia, Università di Cagliari, via Ospedale 72, 09124 Cagliari, Italy. caboni@unica.it
authors.forename: Pierluigi
authors.initials: P
authors.lastname: Caboni
authors.forename: Giorgia
authors.initials: G
authors.lastname: Sarais
authors.forename: Alberto
authors.initials: A
authors.lastname: Angioni
authors.forename: Vincenzo Luigi
authors.initials: VL
authors.lastname: Garau
authors.forename: Paolo
authors.initials: P
authors.lastname: Cabras
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005638:Fruit / Q000737:chemistry*; D007306:Insecticides / Q000032:analysis*; D036701:Limonins / Q000032:analysis*; D013058:Mass Spectrometry / Q000379:methods*; D011722:Pyrethrins / Q000032:analysis; D012402:Rotenone / Q000031:analogs & derivatives / Q000032:analysis; D012433:Ryanodine / Q000032:analysis; D014675:Vegetables / Q000737:chemistry*
chemical_list: D007306:Insecticides; D036701:Limonins; D011722:Pyrethrins; D012402:Rotenone; D012433:Ryanodine; C107676:deguelin; C010329:azadirachtin