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The environmental half-lives and mean residence times of contaminants in dust for an urban environment: Barrow-in-Furness.

https://arctichealth.org/en/permalink/ahliterature229306
Source
Sci Total Environ. 1990 Apr;93:403-10
Publication Type
Article
Date
Apr-1990
Author
R W Allott
C N Hewitt
M R Kelly
Author Affiliation
Institute of Environmental & Biological Sciences, University of Lancaster, Bailrigg, U.K.
Source
Sci Total Environ. 1990 Apr;93:403-10
Date
Apr-1990
Language
English
Publication Type
Article
Keywords
Accidents
Air Pollutants - analysis
Air Pollutants, Radioactive - analysis
Cesium Radioisotopes - analysis
Climate
Dust - analysis
England
Housing
Humans
Microclimate
Nuclear Reactors
Ukraine
Urban Population
Abstract
Radiocaesium contamination of dusts from external (road and school yards) and internal (house) environments within Barrow-in-Furness was found to be derived from the primary input event of Chernobyl fallout. The specific activity of radiocaesium in the dust reservoirs studied, decreased exponentially, enabling environmental half-lives to be calculated (190-370 day). The broad similarity of these half-lives indicated that secondary contamination processes, such as atmospheric deposition of resuspended dust, cause all the internal and external reservoirs to be linked into a system encompassing much of Barrow-in-Furness. Mean residence times of external dust were derived from the calculated environmental half-lives and measurements of atmospheric deposition (150-250 day). These mean residence times are dependent on local processes and are thus site specific, whilst the environmental half-lives represent an integration of all the processes operating in Barrow-in-Furness.
PubMed ID
2360022 View in PubMed
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