Estimation of releases into rivers with the steady-state surface water model EXWAT using dichloromethane

The surface water model EXWAT is applied to monitoring studies of hazardous substances to estimate site-specific emissions from measured concentrations. The model includes the main processes which govern the fate of chemicals in rivers, namely, advection, volatility, degradation processes, sedimenta...

Full description

Saved in:
Bibliographic Details
Published in:Ecotoxicology and environmental safety 1990-02, Vol.19 (1), p.72-80
Main Authors: Trapp, St, Brüggemann, R., Münzer, B.
Format: Article
Language:English
Subjects:
540320 - Environment, Aquatic- Chemicals Monitoring & Transport- (1990-)
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
CHLORINATED ALIPHATIC HYDROCARBONS
ECOLOGICAL CONCENTRATION
Environmental Monitoring
ENVIRONMENTAL SCIENCES
EUROPE
FEDERAL REPUBLIC OF GERMANY
Freshwater
Fundamental and applied biological sciences. Psychology
Germany, West
HALOGENATED ALIPHATIC HYDROCARBONS
Hydrocarbons, Chlorinated - analysis
MATHEMATICAL MODELS
Methylene Chloride - analysis
Models, Theoretical
MONITORING
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLLUTION
STEADY-STATE CONDITIONS
SURFACE WATERS
Water Pollutants - analysis
Water Pollutants, Chemical - analysis
WATER POLLUTION
WESTERN EUROPE
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The surface water model EXWAT is applied to monitoring studies of hazardous substances to estimate site-specific emissions from measured concentrations. The model includes the main processes which govern the fate of chemicals in rivers, namely, advection, volatility, degradation processes, sedimentation, resuspension, and protonic equilibria. The steady-state solution of the linear mass balance equations leads to proportionality between input and concentration of a chemical, which is used to assess input rates from measured concentrations. Subsequently, the model can be used for pollution control and identification of unknown releases. With measured concentrations in the Rhine near Koblenz (95 km downstream from the mouth of the river Main) the load of dichloromethane from the tributary Main was estimated. The comparison with measured concentrations in the tributary mouth has a good agreement in this case.
ISSN:0147-6513
1090-2414
DOI:10.1016/0147-6513(90)90080-O