title: Structural diversity of organochlorine compounds in groundwater affected by an industrial point source.
abstract: Groundwater samples contaminated by an industrial point source were analysed in order to reveal the structural diversity of halogenated organic contaminants. Particular focus was laid on the metabolites and derivatives related to the pesticides DDT (2,2-bis(chlorophenyl)-1,1,1-trichlorethane) and lindane (γ-hexachlorocyclohexane). Additionally, a wide range of chlorinated and brominated xenobiotics were identified. These results represent a high degree of contamination with organochlorine compounds illustrating a considerable structural diversity in groundwater in the vicinity of the industrial plant. The polar DDT-metabolite DDA (2,2-bis(chlorophenyl)acetic acid), which has been neglected in water studies widely, represents the main DDT metabolite analysed in the water samples. Besides DDA, some unknown substances with structural relation to DDA and DDT were detected and identified, in detail 2,2-bis(4-chlorophenyl)acetic acid N-methyl amide (DDAMA) and 2,2-bis(4-chlorophenyl)acetic acid n-butyl ester (DDABE). As an overall implication of this study it has to be demanded that analysis of industrially affected ground waters have to be based on screening analysis for a comprehensive view on the state of pollution.
authors.affiliation: RWTH Aachen University, Institute of Geology and Geochemistry of Petroleum and Coal, Lochnerstrasse 4-20, 52056 Aachen, Germany.
authors.forename: Kerstin
authors.initials: K
authors.lastname: Frische
authors.forename: Jan
authors.initials: J
authors.lastname: Schwarzbauer
authors.forename: Mathias
authors.initials: M
authors.lastname: Ricking
mesh_terms: D003634:DDT / Q000032:analysis / Q000737:chemistry / Q000633:toxicity; D004784:Environmental Monitoring; D001556:Hexachlorocyclohexane / Q000032:analysis / Q000737:chemistry / Q000633:toxicity; D006843:Hydrocarbons, Chlorinated / Q000032:analysis* / Q000737:chemistry / Q000633:toxicity; D007220:Industrial Waste / Q000032:analysis*; D018675:Toxicity Tests; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry / Q000633:toxicity
chemical_list: D006843:Hydrocarbons, Chlorinated; D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D001556:Hexachlorocyclohexane; D003634:DDT