title: Organochlorine insecticide residues in Ganga river water near Farrukhabad, India.
abstract: Multiple residues of organochlorine insecticides were monitored in Ganga river water in the district of Farrukhabad in northern Indian for one year (1991-1992). Almost all the samples were found to be contaminated with residues of HCH and DDT. Residues of aldrin, endosulfan and heptachlor were also detected in a larger number of samples. Alpha-HCH, pp'-DDT and alpha-endosulfan were found to dominate over the other isomers of HCH, DDT and endosulfan, respectively. Enhanced percentage of beta-HCH suggests accumulation of this isomer in the aquatic environment. The average concentration of aldrin was more than that of dieldrin. Aldrin residues often exceeded the WHO guideline value for drinking water and the concentration of heptachlor occasionally exceeded the specified limits.
authors.affiliation: Division of Agricultural Chemicals, Indian Agricultural Research Institute, 110012, New Delhi, India.
authors.forename: N P
authors.initials: NP
authors.lastname: Agnihotri
authors.forename: V T
authors.initials: VT
authors.lastname: Gajbhiye
authors.forename: M
authors.initials: M
authors.lastname: Kumar
authors.forename: S P
authors.initials: SP
authors.lastname: Mohapatra