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QSPR study on the polyacrylate–water partition coefficients of hydrophobic organic compounds

  • Resource Recovery from Wastewater, Solid Waste and Waste Gas: Engineering and Management Aspects
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Abstract

The partition coefficient is essential for the analysis of organic chemicals using solid-phase microextraction (SPME) techniques. In this study, a quantitative structure-property relationship (QSPR) model was developed with chemical descriptors for the prediction of the polyacrylate (PA)-water partition coefficient (KPA-w). The major variables influencing KPA-w in the QSPR model were CrippenlogP (crippen octanal-water partition coefficient), RNCG (relative negative charge—most negative charge/total negative charge), VE2_Dzv (average coefficient sum of the last eigenvector from the Barysz matrix/weighted by van der Waals volume), and ATSC4v (centred Broto-Moreau autocorrelation-lag 4/weighted by van der Waals volume). The relative determination coefficient (R2) and cross-validation coefficient (Q2) were 0.898 and 0.858, respectively, which implied that the model had excellent robustness. Mechanistic interpretation suggested that the factors affecting the partitioning process between PA and water are the hydrophobicity, relative negative charge, and van der Waals volume of a chemical. The results of this study provide a good tool for predicting the log KPA-w values of diverse hydrophobic organic compounds (HOCs) within the applicability domain to reduce experimental costs and the time required for innovation.

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Funding

The current work was funded by the National Natural Science Foundation of China (Grant Nos. 21607123 and 51809226) and the Jiangsu Provincial Laboratory for Water Environmental Protection Engineering (Grant No. W1802).

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  1. Jiangsu Provincial Laboratory of Water Environmental Protection Engineering, School of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, Jiangsu, China

    Tengyi Zhu, Heting Yan & Haomiao Cheng

  2. School of Civil Engineering, Southeast University, Nanjing, 210096, China

    Rajendra Prasad Singh & Yajun Wang

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  1. Tengyi Zhu
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Zhu, T., Yan, H., Singh, R.P. et al. QSPR study on the polyacrylate–water partition coefficients of hydrophobic organic compounds. Environ Sci Pollut Res 27, 17550–17560 (2020). https://doi.org/10.1007/s11356-019-06389-z

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