High persistent organochlorine (OC) insecticides are banned to be used in
indoor. In some developing countries, they used for controlling vectors insects.
Organophosphorus (OP) insecticides widely utilized to control which replaced OC
occasionally. On the contrary, organophosphorus pesticides are widely used in the
control of various insect pests of agricultural crops and fodder for animal
production. In comparison with OC group, OP has highly toxic hazards and shortterm environmental degradation. Herein, we determine the organochlorine
pesticide residues in tomato samples from various governorates in Upper Egypt.
As a result, heptachlor-epoxide, dieldrin, aldrin, p, p'-DDE, and p, p'-DDT had the
lowest residues in all tomato samples, with values of (0.61, 0.93, 1.38, 1.7, and
1.74 µg/ kg) for each pesticide residue, respectively, based on results of gas
chromatography in tomato samples using the Quick, Easy, Cheap, Effective,
Rugged, and Safe (QuEChERS) method. Further, heptachlor and methoxychlor
was found to be the highest levels among the pesticide residues that detected (13.9
and 10.42 µg/ kg) respectively. For the OP insecticide residues, the collected
samples of tomatoes from Assiut, New Valley, El-Minia and Sohag were no
residues to be found. Further studies of continues monitoring OC and OP residues
of pesticides in different ecosystems septically in table vegetables and fruit should
be applied.