Determination of residues of deltamethrin in milk and butter.
A method is described for the determination of deltamethrin, particularly in mild and dairy products. Residues and fat were co-extracted with acetone and light petroleum, partitioned with acetonitrile-methylene chloride and centrifuged (-10 degrees C). The extract was purified by gel permeation chromatography. A Florisil clean-up method was tested but did not seem effective enough. Analysis was performed by gas-liquid chromatography with a 63Ni electron-capture detector on 3% SE-30 using a short column (40 cm). Confirmation was effected by gas chromatography-mass spectrometry with an SE-30 capillary column (10 m). Recoveries from fortified samples ranged from 72 to 88% for milk spiked with 0.06 ppm and butter spiked with 2 ppm and was 94% for milk spiked with 0.016 ppm of deltamethrin.
Venant
A
A
Laboratoire Central d'Hygiène Alimentaire, Paris, France.
Van Neste
E
E
Borrel
S
S
Mallet
J
J
D000818:Animals; D002079:Butter / Q000032:analysis*; D002849:Chromatography, Gas; D002850:Chromatography, Gel; D004041:Dietary Fats / Q000032:analysis; D005506:Food Contamination / Q000032:analysis*; D007306:Insecticides / Q000032:analysis*; D017633:Magnesium Silicates; D008892:Milk / Q000032:analysis*; D009570:Nitriles; D010573:Pesticide Residues / Q000032:analysis*; D011722:Pyrethrins / Q000032:analysis*; D012824:Silicic Acid
D004041:Dietary Fats; D007306:Insecticides; D017633:Magnesium Silicates; D009570:Nitriles; D010573:Pesticide Residues; D011722:Pyrethrins; C005013:Florisil; D012824:Silicic Acid; C017180:decamethrin; D002079:Butter