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Development of the Fragment Constant Method for Estimating the Partition Coefficients of Nonionic Organic Mixtures

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Abstract

The fragment constant model for estimating partition coefficient of nonionic organic mixtures is developed based on group contribution theory. For 60 mixtures randomly composed of eight substituted benzenes, the C18-Empore™ disks/water partition coefficients (K MD) are determined. Establishment of a model between these K MD and the mole fraction of the fragments (Cl, Br, I, NO2, CH3) acquires the fragments constants for K MD. The significant linear regression equation, between these fragment constants and that of Hansch, provides an approach for calculating K MD of untested nonionic organic mixtures by using the fragment constants of Hansch.

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Authors and Affiliations

  1. School of the Environment, State Key Laboratory of Pollution Control and Resources Reuse, Nanjing University, Nanjing 210093, P. R. China, , , , , , CN

    Z. Lin, H. Yu, S. Gao, J. Cheng & L. Wang

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  1. Z. Lin
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  2. H. Yu
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  3. S. Gao
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  4. J. Cheng
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  5. L. Wang
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Received: 11 November 2000/Accepted: 14 April 2001

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Lin, Z., Yu, H., Gao, S. et al. Development of the Fragment Constant Method for Estimating the Partition Coefficients of Nonionic Organic Mixtures. Arch. Environ. Contam. Toxicol. 41, 255–260 (2001). https://doi.org/10.1007/s002440010246

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  • DOI: https://doi.org/10.1007/s002440010246

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