Determination of infinite dilution activity coefficients and 1-octanol/water partition coefficients of volatile organic pollutants

Journal Article · Fri Apr 01 04:00:00 EST 1994 · Journal of Chemical and Engineering Data; (United States)

DOI:https://doi.org/10.1021/je00014a036· OSTI ID:7183176

Tse, G; Sandler, S I ^[1]

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1. Univ. of Delaware, Newark, DE (United States). Dept. of Chemical Engineering

The characterization of pollutants is of growing interest as concerns about the environment increase. One parameter useful in predicting the fate of a chemical in the environment, the infinite dilution activity coefficient, has been determined here for several EPA priority pollutants in 1-octanol at 25 C using a relative gas-liquid chromatographic measurement technique. A simple correlation has been developed relating the limiting activity coefficients of a species in pure water and in pure 1-octanol to its octanol/water partition coefficient. Agreement between the experimental results and published values is very good. The method developed here of computing the octanol/water partition coefficient from gas chromatographic measurements of its infinite dilution activity coefficients is an improvement over traditional partition coefficient determination methods in that it is easier and quicker, without a loss of accuracy. Furthermore, the authors show that this method is applicable to chemicals covering a large range of hydrophobicities (1.0 < log K[sub OW] < 5.0).

• OSTI ID: 7183176
• Journal Information: Journal of Chemical and Engineering Data; (United States), Journal Name: Journal of Chemical and Engineering Data; (United States) Vol. 39:2; ISSN JCEAAX; ISSN 0021-9568
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring &amp; Transport-- (1990-)
540320 -- Environment
Aquatic-- Chemicals Monitoring &amp; Transport-- (1990-)
ALCOHOLS
CONCENTRATION RATIO
ENVIRONMENTAL TRANSPORT
HYDROXY COMPOUNDS
MASS TRANSFER
OCTANOLS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC SOLVENTS
PHASE STUDIES
PHYSICAL PROPERTIES
SOLUBILITY
SOLVENT PROPERTIES
SOLVENTS
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE