[Disintegration and elimination of 32P-naled in milk].
The organophosphorus insecticide naled (O,O-dimethyl-O,O-(1,2-dibromo-2,2-dichloroethyl)-phosphate, labeled by 32P] is degraded in milk in vitro at 5 degrees C with a half-life of 35 h with dichlorvos as a metabolite, that is also formed at short time heating and UV-irradiation. The recovery in milk powder is 25% (naled + dichlorvos) of the initial concentration. Following spray application of 0,05 mg naled/kg body mass to 2 lactating cows, 5-8 ppb of naled and 7-9 ppb of dichlorvos were found in the milk 5 h p.a., not exceeding the given tolerance level of 0,02 mg/kg in the German Democratic Republic.
D000818:Animals; D002417:Cattle; D004006:Dichlorvos / Q000032:analysis; D005260:Female; D005506:Food Contamination / Q000517:prevention & control*; D006207:Half-Life; D006358:Hot Temperature; D007306:Insecticides / Q000032:analysis*; D008892:Milk / Q000032:analysis* / Q000378:metabolism; D009267:Naled / Q000032:analysis* / Q000378:metabolism / Q000528:radiation effects; D010573:Pesticide Residues / Q000032:analysis; D011247:Pregnancy; D014466:Ultraviolet Rays
D007306:Insecticides; D010573:Pesticide Residues; D004006:Dichlorvos; D009267:Naled
Abbau und Ausscheidung von 32P-Naled in der Milch.