Prediction of seawater solubility of aromatic compounds |
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Authors: | Yoshikazu Hashimoto Keiko Tokura Hideko Kishi W.M.J. Strachan |
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Affiliation: | 1. Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi, Yokohama 223, Japan;2. Environmental Contaminations Division, National Water Research Institute Burlington, Canada |
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Abstract: | The salting-out effect by seawater constituents on the water solubilities of 11 aromatic compounds, anthracene, pyrene, phenanthrene, biphenyl, naphthalene, p-nitrotoluene, p-toluidine, o-nitrophenol, m-nitrophenol, p-nitrophenol and phenol was investigated. A best fit equation (r = 0.965) for the salting-out parameters, K, and distilled water solubilities, So, at 20°C was found to be K = ?0.0298 log So + 0.114. Seawater solubilities, S, predicted for solutions of ionic strength, I, using the equation log S = (0.0298 I + 1) log So ? 0.114 I were in agreement with observed values within 13 % (average 4.8 %) and there were no significant differences between values from the Pacific Ocean seawater and those from 35 o/oo NaCl solutions. It was concluded that dissolved organic matter in seawater had an insignificant effect for the test chemicals. |
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