Article ID Journal Published Year Pages File Type
6341370 Atmospheric Environment 2013 6 Pages PDF
Abstract

•Statistically QSPR models for logKOA of OH/MeO-PBDE congeners were developed.•The electrostatic field was found to be main factors governing the logKOA.•Ten compounds without experimental values were predicted the values of logKOA.

The octanol/air partition coefficient (KOA) is a key physicochemical parameter for describing the partition of organic pollutants between air and environment organic phase. The development of appropriate method to estimate KOA is of great importance. In the present study, the steric, electrostatic, hydrophobic, hydrogen bond donor and acceptor descriptors were computed by comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA). On the basis of these parameters, the statistically quantitative structure-property relationship (QSPR) models for logKOA of hydroxylated polybrominated diphenyl ethers (OH-PBDEs) and methoxylated polybrominated diphenyl ethers (MeO-PBDEs) congeners were developed using partial least-squares (PLS) analysis, of which the R2 is about 0.980, 0.952 respectively. The electrostatic field was found to be main factors governing the logKOA. The results of validation indicate the models of this study exhibit optimum stability, and thus it is feasible to predict logKOA.

Related Topics
Physical Sciences and Engineering Earth and Planetary Sciences Atmospheric Science
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