Migration of organophosphorus insecticides cyanophos and prothiofos residues from impregnated paper bags to Japanese apple-pears (Pyrus pyrifolia nakai cv. Nijisseiki).
Bags impregnated with the organophosphorus pesticides prothiofos and cyanophos in three levels were used to cover Japanese apple-pears to protect them from insects. The amounts of prothiofos residue in the bags collected 4 months after application ranged from 0 to 34% of the amounts (81, 148, and 333 microg) found in the bags prior to a bagging. The amounts of cyanophos residue in bags collected 4 months after application ranged from 11 to 29% of the amounts (335, 2860, and 3740 microg) present prior to a bagging. Amounts of prothiofos found in fruits after 4 months ranged from 0 to 0.076 ppm. Amounts of cyanophos found in fruits after 4 months ranged from 0 to 0.011 ppm. Results of the present study indicate that these two pesticides migrated from pesticide-impregnated bags to fruits during the growing season.
Katami
T
T
Gifu Prefectural Institute of Health and Environmental Sciences, Noisiki, Japan.
Nakamura
M
M
Yasuhara
A
A
Shibamoto
T
T
D005506:Food Contamination; D005511:Food Handling; D005638:Fruit; D007306:Insecticides; D007564:Japan; D009946:Organothiophosphorus Compounds; D010209:Paper; D010573:Pesticide Residues
D007306:Insecticides; D009946:Organothiophosphorus Compounds; D010573:Pesticide Residues; C011428:cyanophos