The samples of okra and brinjal fruit and soil collected from non-IPM and IPM fields were analyzed for insecticides viz chlorpyriphos, cypermethrin and monocrotophos, widely used in these crops in adopted village Raispur, in Ghaziabad District (UP).

Four water and sediment samples were drawn from Keoladeo National Park Lake, Bharatpur to monitor pesticide residues. Estimation was done by GC-ECD using multiresidue method for organochlorine and synthetic pyrethroid insecticides.

Dissipation of lindane (400 and 800 g ai ha-1) and fenvalerate (75 and 150 g ai ha-1) was studied on chickpea crop following two applications of their dust formation. Initial deposits of lindane on green pods were 2.85 and 5.36 mg kg-1 at recommended and double dose, which dissipated with half-life of 3.3-3.6 days.

Newly developed Enzyme Linked Immuno Sorbent Assay (ELISA) technique has been used for monitoring of wheat grain and flour samples for endosulfan residues. Data indicated that eight samples out of fifteen contained endosulfan residues. The average concentation varied from 0.65-6.1 ppm. ELISA data correlated well with GC analysis with correlation coefficient of 0.98.

A multiresidue method has been developed for the analysis of residues of 25 pesticides belonging to organochlorines, organophosphates, pyrethroids and a fungicide thifluzamide in Basmati rice. The Gas Liquid Chromatograph (GLC) equipped with a capillary column and electron capture detector (ECD) was used for estimation.

All food is made up of chemicals. In addition to the nutrients such as carbohydrate, fat, protein etc., food contains many such substances often in very small quantities. Any such substance may have a degree of toxicity, whether natural, deliberately added or contaminant and hence no distinction can be made between natural and other substances when deciding if a food is likely to be hazardous.