Determination of pyrethroid pesticide residues in processed fruits and vegetables by gas chromatography with electron capture and mass spectrometric detection.
A gas chromatographic method was developed for the simultaneous determination of 12 pyrethroids (tefluthrin, bifenthrin, fenpropathrin, cyhalothrin, permethrin, cyfluthrin, cypermethrin, alpha-cypermethrin, flucythrinate, fenvalerate, fluvalinate, and deltamethrin) in tomato puree, peach nectar, orange juice, and canned peas. A miniaturized extraction-partition procedure requiring small amounts of nonchlorinated solvents is used. Samples are extracted with acetone, partitioned with ethyl acetate-cyclohexane (50 + 50, v/v), and cleaned up on a Florisil cartridge. The final extract is analyzed by gas chromatography with both electron capture and mass spectrometric detection modes. Studies at fortification levels of 0.010-0.100 mg/kg gave mean recoveries ranging from 70.2 to 96.0% and coefficients of variation between 4.0 and 13.9% for all compounds. Quantitation limits were < 0.010 mg/kg for electron capture detection.
Sannino
Anna
A
Stazione Sperimentale per l'Industria delle Conserve Alimentari, Viale F. Tanara, 31/A 43100 Parma, Italy. ssicapr@rsadvnet.it
Bandini
Mirella
M
Bolzoni
Luciana
L
D001628:Beverages / Q000032:analysis; D002957:Citrus / Q000737:chemistry; D005511:Food Handling; D005638:Fruit / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D007306:Insecticides / Q000032:analysis*; D018551:Solanum lycopersicum / Q000737:chemistry; D018532:Pisum sativum / Q000737:chemistry; D010573:Pesticide Residues / Q000032:analysis*; D027861:Prunus / Q000737:chemistry; D011722:Pyrethrins / Q000032:analysis*; D012680:Sensitivity and Specificity; D014675:Vegetables / Q000737:chemistry*
D007306:Insecticides; D010573:Pesticide Residues; D011722:Pyrethrins