Comparison of water solubility enhancements of organic solutes by aquatic humic materials and commercial humic acids

Journal Article · Mon Nov 30 23:00:00 EST 1987 · Environ. Sci. Technol.; (United States)

DOI:https://doi.org/10.1021/es00165a012· OSTI ID:5117091

Chiou, C T; Kile, D E; Brinton, T I; Malcolm, R L; Leenheer, J A; MacCarthy, P

Water solubility enhancements of 1,1-bis(p-chlorophenyl)-2,2,2-trichloroethane (p,p'-DDT), 2,4,5,2',5'-pentachlorobiphenyl (2,4,5,2',5'-PCB), and 2,4,4'-trichlorobiphenyl (2,4,4'-PCB) by dissolved organic matter have been studied with the following samples: (1) acidic water samples from the Suwannee River, Georgia, and the Sopchoppy River, Florida; (2) a humic extract of a nearly neutral pH water from the Calcasieu River, Louisiana; (3) commercial humic acids from the Aldrich Chemical Co. and Fluka-Tridom Chemical Corp. The calculated partition coefficients on a dissolved organic carbon basis (K/sub doc/) for organic solutes with water samples and aquatic humic extracts from this and earlier studies indicate that the enhancement effect varies with the molecular composition of the aquatic humic materials, The K/sub doc/ values with water and aquatic humic samples are, however, far less than the observed K/sub doc/ values obtained with the two commercial samples, by factors of about 4-20. In view of this finding, one should be cautious in interpreting the effects of the dissolved organic matter on solubility enhancement of organic solutes on the basis of the use of commercial humic acids. 14 references, 3 figures, 2 tables.

• Research Organization: Geological Survey, Denver, CO (USA)
• OSTI ID: 5117091
• Journal Information: Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 21:12; ISSN ESTHA
• Country of Publication: United States
• Language: English

Related Subjects

520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AQUEOUS SOLUTIONS
AROMATICS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLORINATED AROMATIC HYDROCARBONS
COMPARATIVE EVALUATIONS
DATA
DISPERSIONS
ENVIRONMENTAL EFFECTS
EXPERIMENTAL DATA
FEDERAL REGION IV
FEDERAL REGION VI
FLORIDA
GEORGIA
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENATED AROMATIC HYDROCARBONS
HUMIC ACIDS
INFORMATION
LOUISIANA
MIXTURES
NORTH AMERICA
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC MATTER
POLLUTION
RIVERS
SOLUBILITY
SOLUTIONS
STREAMS
SURFACE WATERS
USA
WATER POLLUTION