Can chlorophenols, decontaminated through binding to humic acid, be released
- Pennsylvania State Univ., University Park (USA)
The binding of xenobiotics to humus is considered a novel approach for decontamination of the environment, but little is known yet on the possible release of humus-bound chemicals and on related delayed pollution effects. To evaluation this problem, they enzymatically incorporated {sup 14}C-labelled chlorophenols into model and natural humic acid polymers and exposed these complexes to mixed microbial cultures isolated from different soils. The experiments were performed using air-flow systems equipped with a series of traps absorbing radioactive volatiles and {sup 14}CO{sub 2}. After a 3-month incubation period the media were analyzed by HPLC and gel chromatography (Sephadex G-150) for detecting the distribution of radioactivity. For comparison, some polymers were treated chemically with NaOH, KMnO{sub 4} and Na-amalgam and the reaction solution analyzed for the released radioactivity.
- OSTI ID:
- 7267394
- Report Number(s):
- CONF-8809264--
- Journal Information:
- Preprints of Papers Presented at National Meeting, Division of Water, Air and Waste Chemistry, American Chemical Society; (USA), Journal Name: Preprints of Papers Presented at National Meeting, Division of Water, Air and Waste Chemistry, American Chemical Society; (USA) Vol. 28:2; ISSN ACWCA; ISSN 0099-7293
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540211 -- Environment
Terrestrial-- Basic Studies-- Radiometric Techniques-- (1990-)
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
AROMATICS
BIODEGRADATION
CARBON 14 COMPOUNDS
CHEMICAL REACTIONS
CHLORINATED AROMATIC HYDROCARBONS
CHROMATOGRAPHY
CLEANING
DECOMPOSITION
DECONTAMINATION
HALOGENATED AROMATIC HYDROCARBONS
HUMIC ACIDS
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
LIQUID COLUMN CHROMATOGRAPHY
MICROORGANISMS
ORGANIC ACIDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLYMERS
SEPARATION PROCESSES
SOILS
TRACER TECHNIQUES