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Predicting aqueous concentrations of polynuclear aromatic hydrocarbons in complex mixtures

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Abstract:

The release of polynuclear aromatic hydrocarbons (PAHs) from buried organic wastes into groundwater occurs over long periods of time. Estimation of the equilibrium aqueous concentration or "solubility" of PAHs in mixtures of contaminated soil and water can aid in predicting fate and transport processes. Four methods were evaluated for their effectiveness in predicting aqueous concentrations of 16 PAH compounds. The results indicated that a cosolvent method was extremely effective in predicting aqueous concentrations and that equilibrium models (Raoult's law) provided estimates within an order of magnitude of PAH concentrations in complex mixtures. Predicted concentrations from soil-water partition coefficients (K p) generally were within an order of magnitude of actual concentrations.

Keywords: COAL TAR; GROUNDWATER; MODEL; PARTITIONING; POLYNUCLEAR AROMATIC HYDROCARBONS

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/106143095X131312

Publication date: March 1, 1995

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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