Macromolecular transport of hydrophobic contaminants in aqueous environments
Technical Report
·
OSTI ID:7078601
The mobility of a model macromolecule, blue dextran, was compared under laboratory conditions to the mobility of tritiated water through a sandy soil. The blue dextran eluted from the soil prior to the tritiated water. The phenomenon was compared to exclusion chromatography where molecules are separated by size with the largest eluting first and each molecule flowing through a different portion of the total porosity. When the soil was amended with a mixture of kaolinite and bentonite clay, the porosity occupied by the macromolecule was decreased. The implications to hydrophobic chemical transport based on the presence and mobility of a macromolecule were evaluated from a theoretical basis. Macromolecules should increase the relative mobility of slightly mobile compounds more than they increase the relative mobility of highly mobile compounds. Very hydrophobic compounds should show greater mobility under natural conditions than predicted, ignoring the presence of dissolved organic carbon.
- Research Organization:
- Environmental Protection Agency, Ada, OK (USA). Robert S. Kerr Environmental Research Lab.
- OSTI ID:
- 7078601
- Report Number(s):
- PB-88-219191/XAB; EPA/600/J-88/044
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
510200 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BLOOD SUBSTITUTES
CARBOHYDRATES
DEXTRAN
DRUGS
ELUTRIATION
ENVIRONMENTAL TRANSPORT
GROUND WATER
HEMATOLOGIC AGENTS
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
LAND POLLUTION
LIGHT NUCLEI
MASS TRANSFER
MATHEMATICAL MODELS
MOLECULES
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC WASTES
OXYGEN COMPOUNDS
POLLUTION
POLYSACCHARIDES
POROSITY
RADIOISOTOPES
SACCHARIDES
SEPARATION PROCESSES
TRACER TECHNIQUES
TRITIUM
WASTES
WATER
WATER POLLUTION
YEARS LIVING RADIOISOTOPES
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BLOOD SUBSTITUTES
CARBOHYDRATES
DEXTRAN
DRUGS
ELUTRIATION
ENVIRONMENTAL TRANSPORT
GROUND WATER
HEMATOLOGIC AGENTS
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
LAND POLLUTION
LIGHT NUCLEI
MASS TRANSFER
MATHEMATICAL MODELS
MOLECULES
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC WASTES
OXYGEN COMPOUNDS
POLLUTION
POLYSACCHARIDES
POROSITY
RADIOISOTOPES
SACCHARIDES
SEPARATION PROCESSES
TRACER TECHNIQUES
TRITIUM
WASTES
WATER
WATER POLLUTION
YEARS LIVING RADIOISOTOPES