Toluene-humic acid association equilibria: isopiestic measurements

A closed loop recirculating gas isopiestic apparatus was used to measure the association between toluene and humic acid. The association equilibrium could be described by a linear partition coefficient model in which the equilibrium constant was a function of the humic acid concentration. While solu...

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Veröffentlicht in:	Environ. Sci. Technol.; (United States) 1985-07, Vol.19 (7), p.643-645
Hauptverfasser:	Haas, Charles N, Kaplan, Brian M
Format:	Artikel
Sprache:	eng
Schlagworte:	510200 - Environment, Terrestrial- Chemicals Monitoring & Transport- (-1989) ALKYLATED AROMATICS Applied sciences AROMATICS Biological and physicochemical phenomena CHEMICAL REACTIONS CORRELATIONS DATA ENVIRONMENTAL SCIENCES EQUILIBRIUM Exact sciences and technology EXPERIMENTAL DATA HUMIC ACIDS HYDROCARBONS INFORMATION MATHEMATICAL MODELS MEASURING METHODS Natural water pollution NUMERICAL DATA ORGANIC ACIDS ORGANIC COMPOUNDS Pollution TOLUENE Water treatment and pollution
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Zusammenfassung:	A closed loop recirculating gas isopiestic apparatus was used to measure the association between toluene and humic acid. The association equilibrium could be described by a linear partition coefficient model in which the equilibrium constant was a function of the humic acid concentration. While solubilization of toluene by DOC did occur, it might be of limited significance in affecting overall distribution of toluene in natural and artificial aquatic systems. The apparatus used provided high precision data for the coefficients.
ISSN:	0013-936X 1520-5851
DOI:	10.1021/es00137a011