Influence of organic matter from soils and sediments from various origins on the sorption of some chlorinated aliphatic hydrocarbons: Implications on K sub OC correlations
- Univ. of Tuebingen (West Germany)
Sorption of nonionic compounds is strongly dependent on the content as well as the nature of the organic matter in soils and sediments. The composition and the structure of organic matter varies due to its origin and geological history and strongly influences the sorption affinity for nonionic organic compounds. Organic matter in unweathered shales and high-grade coals shows enhanced sorption (> 1 order of magnitude) compared to organic matter in recent soils or geologically young material and low-grade coals. The results obtained indicate a decrease in sorption with increasing proportions of oxygen-containing functional groups in natural organic substances. A first approximation to estimate sorption coefficients for various organic matter is provided by an empirical correlation between the hydrogen/oxygen (H/O) atomic ratio as an index of the oxidation of the organic matter and the organic carbon normalized sorption coefficients (K{sub OC}). This approximation also permits adjustment of K{sub OC} values derived from K{sub OW} data.
- OSTI ID:
- 6255239
- Journal Information:
- Environmental Science and Technology; (USA), Journal Name: Environmental Science and Technology; (USA) Vol. 24:11; ISSN ESTHA; ISSN 0013-936X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
CALCULATION METHODS
CARBONACEOUS MATERIALS
CHLORINATED ALIPHATIC HYDROCARBONS
COAL
ENERGY SOURCES
FOSSIL FUELS
FUELS
HALOGENATED ALIPHATIC HYDROCARBONS
MATERIALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC MATTER
ROCKS
SEDIMENTARY ROCKS
SEDIMENTS
SHALES
SOILS
SORPTION