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Title: The mobilization and release of mercury, copper, iron, manganese and selenium from contaminated sediment as a result of dredging : laboratory simulation studies : interim report to the National Rivers Authority Anglian Region
Author: National Rivers Authority Anglian Region
Document Type: Monograph
Abstract:
This report summarises the results of the dredging simulation experiments undertaken by Imperial College to assess the likely release of mercury and other metallic contaminants from bottom sediments of Rockland Broad if dredging operations using a bucket dredge were to be carried out. Previous research by Imperial College investigating the River Yare and its associated Broads has revealed the presence of a point source contamination plume of heavy metals, especially copper and mercury emanating from Whitlingham STW (Imperial College, 1988). A large amount of the contaminated sediment has also accumulated in the Rockland, Wheatfen and Surlingham Broads. In view of the high concentrations of mercury known to be associated with the Broads' sediment and consequent potential for production of lipophilic methylmercury, it has become necessary to assess the environmental impact and consequences of dredging operations in terms of metal release, mobilisation and possible bioavailability.
Publisher: National Rivers Authority
Publication Date: 1993
Publication Place: London
Subject Keywords: Heavy metalsSedimentsPollutionContamination
Geographic Keywords: YareNorfolkBroadland Rivers catchment
Extent: 37
Permalink: http://www.environmentdata.org/archive/ealit:4266
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