title: Determination of persistent organochlorine residues in a commercial fresh water catfish by GLC and study of their accumulation pattern.
abstract: Concentrations of various organochlorine pesticides in a commercial fresh water catfish, Heteropneustes fossilis, were measured. This study reveals possible toxicological exposure of human beings by way of consuming such fish containing pesticide and that will amount to possible exposure. Tissue extracts obtained by Soxhlet apparatus were used for analysis and the concentrations of analytes were determined by gas chromatography with electron capture detection. The major organochlorines found in blood sample were Endosulfan, Alpha-HCH, Beta-HCH and Gamma-HCH. However, the organochlorines found in edible portion of fish (i.e.flesh) were mainly--Endosulfan, Delta-HCH, Aldrine, pp-DDE etc. The concentrations of these organochlorines were at or above the theoretical threshold limit and hence are supposed to be effectively toxic to fish eaters, due to biomagnification.
authors.affiliation: Department of Chemistry, D.S.N.P.G. College, Unnao, India. ajay_k_srivastava@rediffmail.com
authors.forename: Ajay
authors.initials: A
authors.lastname: Srivastava
authors.forename: J S
authors.initials: JS
authors.lastname: Gaur
authors.forename: P K
authors.initials: PK
authors.lastname: Bajpai
mesh_terms: D000818:Animals; D002397:Catfishes / Q000097:blood; D005618:Fresh Water / Q000032:analysis; D006843:Hydrocarbons, Chlorinated / Q000097:blood*; D009132:Muscles / Q000737:chemistry*; D010575:Pesticides / Q000097:blood*
chemical_list: D006843:Hydrocarbons, Chlorinated; D010575:Pesticides