title: The inorganic and organic characters for predicting bioconcentration on wide variety of chemicals in fish.
abstract: The applicability of Fujita's inorganic (i) and organic (o) characters as descriptors for predicting bioconcentration factor (BCF) in fish was investigated with a wide variety of organic chemicals. Among 612 BCF data recently released by National Institute of Technology and Evaluation (NITE), the values for the chemicals with a molecular weight of less than 600 and the 1-octanol/water partition coefficient (log P) of less than six were extracted and analyzed. By applying theoretically derived model equation, a good relationship between these BCF and each Fujita's sigma i: sigma o was established. Statistical analyses and model validations revealed that the estimations of our approach were very excellent. More precise predictions were attained than those by using other published models, especially, for chemicals such as disperse dye having hetero atoms.
authors.affiliation: Environmental Health Science Laboratory, Sumitomo Chemical Company Limited, 4-2-1 Takatsukasa, Takarazuka, Hyogo 665-8555, Japan. nakais2@sc.sumitomo-chem.co.jp
authors.forename: S
authors.initials: S
authors.lastname: Nakai
authors.forename: S
authors.initials: S
authors.lastname: Saito
authors.forename: M
authors.initials: M
authors.lastname: Takeuchi
authors.forename: Y
authors.initials: Y
authors.lastname: Takimoto
authors.forename: M
authors.initials: M
authors.lastname: Matsuo
mesh_terms: D000818:Animals; D001682:Biological Availability; D005399:Fishes; D005544:Forecasting; D008962:Models, Theoretical; D008970:Molecular Weight; D013329:Structure-Activity Relationship; D013816:Thermodynamics; D014018:Tissue Distribution; D014874:Water Pollutants, Chemical / Q000493:pharmacokinetics*
chemical_list: D014874:Water Pollutants, Chemical