Equilibration of polychlorinated biphenyls and toxaphene with air and water
The vapor pressure and solubility (as subcooled liquids) and Henry's Law constants (HLCs) for the individual chlorobiphenyl compounds (CBC) in Aroclor 1242, 1254, and 1260, as well as the HLCs for toxaphene, were determined with an equilibrium technique. The results were obtained from one set of measurements, for all of the CBC present in the materials of interest, the subcooled organic mixtures that are partitioning in the environment. The HLCs are such that the transport rate of these compounds through the air/water interface should be dependent on both the gas- and liquid-phase mass-transfer coefficients. The solubility of the polychlorinated biphenyls (PCBs) in water is shown to be significantly lower when a solution is prepared by adding an organic solution (acetone, methanol, etc.) of the PCBs to water. These results affect the design and the interpretation of the results from toxicity experiments.
- Research Organization:
- Environmental Protection Agency, Duluth, MN (USA). Environmental Research Lab.
- OSTI ID:
- 6079185
- Report Number(s):
- PB-87-198776/XAB; EPA-600/J-87/025
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
AROMATICS
CHLORINATED AROMATIC HYDROCARBONS
ECOLOGY
ENVIRONMENTAL TRANSPORT
HALOGENATED AROMATIC HYDROCARBONS
INSECTICIDES
MASS TRANSFER
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PESTICIDES
POLLUTION
WATER POLLUTION