The persistence of three pesticides (fenitrothion, dimethoate, and zir
am) in apricots in field conditions and their fate during the drying p
rocess were studied. After the treatments, the pesticides showed fast
decay rates with pseudo-first-order kinetics and half-lives ranging fr
om 6.9 to 9.9 days. The drying process showed a different effect on re
sidue concentrations in dried apricots: omethoate (metabolite of dimet
hoate) and ziram residues had almost doubled, while fenitrothion disap
peared and dimethoate remained constant.