Environmental Geochemistry and Health (1997), 19, 7382
Metal contamination of riverine sediments below
the Avoca mines, south east Ireland
Claudia Herr and N.F. Gray
Environmental Sciences Unit, Trinity College, University of Dublin, Dublin 2, Ireland
The River Avoca is severely polluted by discharges of acid mine drainage (AMD) from the abandoned sulphur and
copper mines at Avoca. The riverine sediments were studied during a low flow period to establish the degree of
contamination and to identify the major processes affecting sediment metal concentrations. pH plays a major role in
the regulation of zinc adsorption and desorption in sediments, showing a significant correlation (p8.0), some 7 km below the mine. In contrast Cu and
Fe significantly increased (p
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[Ms No 396: received 9 March, 1995 and accepted afterrevision 19 September, 1995].
82 C. Herr and N.F. Gray
Materials and methodsResultsDiscussionConclusions