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Reliable QSAR for estimating Koc for persistent organic pollutants : correlation with molecular connectivity indices (CROSBI ID 86679)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Baker, J.R. ; Mihelcic, J.R. ; Sabljić, Aleksandar Reliable QSAR for estimating Koc for persistent organic pollutants : correlation with molecular connectivity indices // Chemosphere, 45 (2001), 213-221-x

Podaci o odgovornosti

Baker, J.R. ; Mihelcic, J.R. ; Sabljić, Aleksandar

engleski

Reliable QSAR for estimating Koc for persistent organic pollutants : correlation with molecular connectivity indices

Several recent studies have shown that n-octanol/water partition coefficients may not be a good predictor for estimating soil sorption coefficients of persistent organic pollutants (POPs), defined here as chemicals with log Kow greater than 5. Thus, an alternative QSAR model was developed that seems to provide reliable estimates for the soil sorption coefficients of persistent organic pollutants. This model is based on a set of calculated molecular connectivity indices and evaluated soil sorption data for 18 POPs. The chemical's size and shape, quantified by a CHI1, CHI3C and valence CHI4C indices, have a dominant effect on the soil sorption process of POPs. The developed QSAR model was rationalized in terms of potential hydrophobic interactions between persistent organic pollutants and soil organic matrix. Its high predictive power has been verified by an extensive internal and external validation procedure.

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Podaci o izdanju

45

2001.

213-221-x

objavljeno

0045-6535

Povezanost rada

Kemija

Indeksiranost