SBSE-GC-ECD/FPD in the analysis of pesticide residues in Passiflora alata Dryander herbal teas.
Stir bar sorptive extraction (SBSE) in combination with GC-ECD/FPD analysis is here applied to the determination of the residues of 11 pesticides (hexachlorobenzene, lindane, chlorothalonil, parathion methyl, parathion ethyl, fenitrothion, malathion, dieldrin, alpha- and beta-endosulfan, and tetradifon) in herbal teas prepared with Passiflora alata Dryander spiked leaves. The method was optimized using spiked herbal teas in a range from 0.05 to 1 pg/microL for organochlorine pesticides and from 0.15 to 3 pg/microL for organophosphorus pesticides. The method is reproducible and repeatable with recoveries calculated from herbal teas prepared with spiked plant material versus spiked herbal teas, varying from about 30% for tetradifon to about 90% for parathion methyl and malathion. The limits of quantitation (LOQs) ranged from 0.017 pg/microL for lindane to 0.117 pg/microL for malathion.
Bicchi
Carlo
C
Dipartimento di Scienza e Tecnologia del Farmaco, Università di Torino, Via Pietro Giuria 9, Italy. carlo.bicchi@unito.it
Cordero
Chiara
C
Iori
Cristina
C
Rubiolo
Patrizia
P
Sandra
Pat
P
Yariwake
Janete H
JH
Zuin
Vania G
VG
D001628:Beverages / Q000032:analysis*; D002849:Chromatography, Gas / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry; D029598:Passiflora / Q000737:chemistry*; D010573:Pesticide Residues / Q000032:analysis*; D018515:Plant Leaves / Q000737:chemistry*; D011786:Quality Control; D015203:Reproducibility of Results; D014867:Water / Q000032:analysis
D010573:Pesticide Residues; D014867:Water