C. Herr et Nf. Gray, SEASONAL-VARIATION OF METAL CONTAMINATION OF RIVERINE SEDIMENTS BELOWA COPPER AND SULFUR MINE IN SOUTH-EAST IRELAND, Water science and technology, 33(6), 1996, pp. 255-261
Citations number
10
Categorie Soggetti
Water Resources","Environmental Sciences","Engineering, Civil
The discharge of acid mine drainage (AMD) from the abandoned sulphur a
nd copper mines at Avoca (S.E. Ireland) results in the formation of oc
hreous deposits on the river substrate. Sediment sampling was carried
out intensively during June and August, 1994 and again during March an
d April, 1995 to investigate seasonal variation of Fe, Cu and Zn conce
ntration in riverine sediments of the receiving water (Avoca River). T
emporal and spatial variations indicate that, apart from pH, hydrologi
cal Factors play a major role in metal accumulation of highly energeti
c river systems. Zinc adsorption and desorption of 'ochre' is chiefly
regulated by pH, while Cu removal seems to be primarily by co-precipit
ation with iron. Basic considerations with regard to sampling techniqu
es are discussed. Copyright (C) 1996 IAWQ.