Henry's law constants for the polychlorinated biphenyls
Henry's law constants were predicted from the ratio of the liquid (or subcooled liquid) vapor pressure and aqueous solubility for each polychlorinated biphenyl (PCB) congener. The liquid vapor pressures and aqueous solubilities were derived for each PCB congener by using correlations of Gibbs' free energy of vaporization against gas-liquid chromatographic retention indexes and Gibbs' free energy of solubilization of a liquid against molecular surface area. The predicted values were in fair agreement with experimental values, and the error for these constants was estimated to be a factor of 5 in the temperature range 0.0-40.0 /sup 0/C. For the PCB congeners, Henry's law constants were independent of molecular weight and increased approximately an order of magnitude with a 25.0 /sup 0/C increase in temperature. The average value for Henry's law constants and air-water partition coefficients for the Aroclor PCB mixtures were approximately 4.0 x 10/sup -4/ atm.m/sup 3//mol at 25.0 /sup 0/C.
- Research Organization:
- Univ. of Wisconsin, Madison
- OSTI ID:
- 5227431
- Journal Information:
- Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 19:7; ISSN ESTHA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Equilibration of polychlorinated biphenyls and toxaphene with air and water
Octanol/air partitioning of polychlorinated biphenyls
Related Subjects
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
AIR-WATER INTERACTIONS
AROMATICS
CHEMICAL PROPERTIES
CHEMISTRY
CHLORINATED AROMATIC HYDROCARBONS
DATA
DISPERSIONS
EXPERIMENTAL DATA
HALOGENATED AROMATIC HYDROCARBONS
INFORMATION
MIXTURES
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHYSICAL PROPERTIES
PRESSURE EFFECTS
SOLUBILITY
TEMPERATURE EFFECTS
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE
WATER CHEMISTRY