Determination of acequinocyl and hydroxyacequinocyl on fruits and vegetables by HPLC-DAD.
A method for determining residues of the new reduced-risk pesticide acequinocyl and its deacetylated derivative hydroxyacequinocyl on fruits and vegetables (grapes, lemons, pears, and tomatoes) by HPLC is described. The pesticides were extracted from the fruits and vegetables with hexane and ethyl acetate solution (1:1, v/v), determined by HPLC-DAD at 250 nm and confirmed by LC/MS. No cleanup was necessary. This method is characterized by recoveries (0.01-4 mg/kg) > 77%, while the coefficient of variation was determined to be less than 11%. The limit of quantitation for both acequinocyl and hydroxyacequinocyl was 0.01 mg/kg for all matrixes.
Caboni
Pierluigi
P
Dipartimento di Tossicologia, Università di Cagliari, via Ospedale 72, 09124 Cagliari, Italy.
Sarais
Giorgia
G
Melis
Marinella
M
Cabras
Marco
M
Cabras
Paolo
P
D000085:Acetates / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005638:Fruit / Q000737:chemistry*; D007306:Insecticides / Q000032:analysis*; D009281:Naphthalenes / Q000032:analysis*; D009285:Naphthoquinones / Q000032:analysis*; D021241:Spectrometry, Mass, Electrospray Ionization; D014675:Vegetables / Q000737:chemistry*
D000085:Acetates; D007306:Insecticides; D009281:Naphthalenes; D009285:Naphthoquinones; C493667:hydroxyacequinocyl; C493666:acequinocyl