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Title: Atmospheric inputs of pollutants to surface waters : interim report on trace organics in atmospheric deposition (015/4/T)
Author: D.J. Smith
Author: D.C. Watts
Document Type: Monograph
There is increasing evidence that atmospheric deposition is a significant source of input of some organic compounds to surface water. However, little information is available on deposition of organic compounds in the UK. Previous NRA funded work at WRc has demonstrated high levels of organics, including priority pollutants, in deposition at several sites in the UK. Over the past year this work has continued, examining a wider range of sampling sites and focusing on compounds of particular concern, such as PAH, PCB, organochlorine pesticides and phenols. Significant amounts of a number of priority pollutants have been identified in both wet and dry deposition. Similarities in the data for different sites indicate that atmospheric deposition of such pollutants is a widespread and common phenomenon in the UK. Seasonal variations were evident, particularly among the PAH where increased combustion of fossil fuel during the winter appears to increase atmospheric concentrations of these compounds. Several contaminants were highlighted by the data as being of particular concern with regard to potential impacts on surface water quality. The results to date also point to the need to incorporate the effects of attenuation processes on the amounts of deposited contaminants which eventually enter surface water. This is essential to allow accurate predictions of the effects of atmospheric deposition on surface water quality. It is also clear that some atmospheric contamination is imported into the UK from distant sources and further investigation of this aspect is warranted.
Publisher: National Rivers Authority
Publication Date: 1992
Publication Place: Bristol
Subject Keywords: Water pollutionPollutantsPesticide residuesAtmospheric depositionWater quality
Geographic Keywords: United Kingdom
Extent: 40
Total file downloads: 317

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