Organochlorine insecticide residues in agricultural soils of the indo-gangetic plain

✍ Scribed by N. P. Agnihotri; G. Kulshrestha; V. T. Gajbhiye; S. P. Mohapatra; S. B. Singh

• Publisher: Springer
• Year: 1996
• Tongue: English
• Weight: 512 KB
• Volume: 40
• Category: Article
• ISSN: 0167-6369
• DOI: 10.1007/bf00398873

✦ Synopsis

Multiple residues of organochlorine insecticides were monitored in the agricultural fields near Farrukhabad in the vicinity of the River Ganga in northern India for one year (1991-1992). Almost all soil samples were found to be contaminated with residues of hexachlorocylohexane (HCH) and dichlorodiphenyl-trichloroethane (DDT). Residues of aldrin and endosulfan were also detected in a large number of samples. Heptachlor residues were scarcely detected. Alpha-HCH, pp'-DDT and alpha-endosulfan were found to dominate over the other isomers/metabolites of HCH, DDT and endosulfan, respectively. The average concentration of dieldrin was more than that of aldrin. The concentrations of residues progressively increased up to a depth of 1 m.