Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/70676
Type: Artigo de periódico
Title: Polycyclic aromatic hydrocarbons: a QSPR study
Author: Ferreira, MMC
Abstract: This work deals with 48 substances composed exclusively of unsubstituted six-membered fused aromatic rings. In the first step, physicochemical properties which are relevant in environmental studies such as the boiling temperature (Tb), the retention index (RI), n-octanol/water partition coefficient (K-OW) and solubility (S) are related with a series of electronic, geometric and topological descriptors. Among them are: electron affinity, the difference between electron affinity and ionization potential (GAP), Wiener, and connectivity indexes, volume, surface area, length-to-breadth ratio and enthalpy of formation. In a second step, these properties were incorporated into the descriptor matrix to build several quantitative structure-property relationships and to obtain prediction rules for the log K-OC, log K-OA, bioconcentration factor (BCF) and Henry's law constant (H). Finally, the photo-induced toxicity of freshwater organism Daphinin-Magna is modeled using the following transformed electronic descriptors: electron affinity, ionization potential and Gap. (C) 2001 Elsevier Science Ltd. All rights reserved.
Subject: PAHs
boiling point
retention index
K-OW
K-OC
K-OA
Henry's law constant
bioconcentration factor
phototoxicity
chemometrics
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/S0045-6535(00)00275-7
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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