title: Degradation of a chiral nonylphenol isomer in two agricultural soils.
abstract: The degradation of a chiral nonylphenol isomer, 4-(1-ethyl-1,4-dimethylpentyl)phenol (NP(112)), in two agricultural soils from Monheim and Dortmund, Germany has been studied. The degradation of NP(112) and the formation of a nitro-nonylphenol metabolite were determined by means of GC-MS analysis. The degradation followed bi-exponential order kinetics, with half-life of less than 5 days in both soils. The nitro-metabolite was found at different concentration levels in the two soils. The nitro-metabolite of NP(112) was more persistent than its parent compound. After 150 days about 13% of the initially applied NP(112) remained in the Monheim soil as its nitro-metabolite. Results of the E-screen assay revealed that the nitro-NP(112) has oestrogenic potency of 85% of that of NP(112). Furthermore, the results of chiral GC-MS analysis revealed that no chiral degradation of NP(112) occurred in this study.
authors.affiliation: Institute of Environmental Research (INFU), Dortmund University of Technology, Otto-Hahn-Str.6, D-44227 Dortmund, Germany.
authors.forename: Haifeng
authors.initials: H
authors.lastname: Zhang
authors.forename: Michael
authors.initials: M
authors.lastname: Spiteller
authors.forename: Klaus
authors.initials: K
authors.lastname: Guenther
authors.forename: Gabriele
authors.initials: G
authors.lastname: Boehmler
authors.forename: Sebastian
authors.initials: S
authors.lastname: Zuehlke
mesh_terms: D000383:Agriculture; D001673:Biodegradation, Environmental; D004463:Ecology / Q000379:methods; D052244:Endocrine Disruptors / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D005858:Germany; D006207:Half-Life; D006863:Hydrogen-Ion Concentration; D008956:Models, Chemical; D010636:Phenols / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D012988:Soil Microbiology; D013237:Stereoisomerism
chemical_list: D052244:Endocrine Disruptors; D010636:Phenols; D012987:Soil; C025256:nonylphenol