Sorption of aromatic and heterocyclic aromatic compounds by well-characterized soil organic matter

Conference · Fri Dec 01 04:00:00 EST 1995

OSTI ID:126382

Piatt, J J; Brusseau, M L ^[1]; West, C C ^[2]

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1. Univ. of Arizona, Tucson, AZ (United States)
2. Robert S. Kerr Environmental Research Lab., Ada, OK (United States); and others

This study seeks to further understand the sorption of hydrophobic organic compounds (HOCs) by soils in which the organic matter has been well characterized. The characterization of the soil`s physical/chemical properties include the soil pH, organic carbon content, carbonate carbon content, particle size distribution, local groundwater chemistry, and organic matter coating morphology. Benzene, naphthalene, phenanthrene, anthracene, pyrene, and m-xylene were chosen as representative HOC for aromatic hydrocarbons. The sorptive behavior of the N-heterocycles pyridine, quinoline, acridine, and 1,3 phenylene diamine were compared to the behavior of their respective aromatic hydrocarbon analogues. Continuous-flow column sorption experiments were performed at room temperature. The rates and magnitudes of sorption were correlated to specific properties of the soil organic matter and solutes. The particulated calcium humate showed larger distribution coefficients and smaller desorption constants than the layered fulvic material.

• OSTI ID: 126382
• Report Number(s): CONF-950402--
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ANTHRACENE
BENZENE
CHEMICAL PROPERTIES
DESORPTION
ENVIRONMENTAL TRANSPORT
HYDROCARBONS
NAPHTHALENE
PHENANTHRENE
POLLUTANTS
PYRENE
PYRIDINE
SOILS
SORPTION