Izvorni znanstveni članak
https://doi.org/10.2478/10004-1254-62-2011-2128
Changes in the Lower Drava River Water Quality Parameters over 24 Years
Vlatka Gvozdić
; Department of Chemistry, University of J. J. Strossmayer, Osijek, Croatia
Josip Brana
; Department of Physics2, University of J. J. Strossmayer, Osijek, Croatia
Dinko Puntarić
; Zagreb Public Health Institute, Department of Health Ecology, Zagreb, Croatia
Domagoj Vidosavljević
; Vukovar General Hospital, Vukovar, Croatia
Danijela Roland
; Department of Chemistry, University of J. J. Strossmayer, Osijek, Croatia
Sažetak
The goal of this study was to analyse 13 physico-chemical and microbiological parameters of the Drava River water at three sampling sites in the lower Drava region (eastern Croatia) over two distinct periods: the pre-war period between 1985 and 1992 and the post-war period between 1993 and 2008. Over both periods, most parameters kept within the tolerable water quality limits, while NO3-N, NH4-N and BOD5 were higher. The lower Drava showed slight organic pollution with high concentrations of dissolved oxygen. High levels of total coliforms and heterotrophic bacteria in the post-war period were only found downstream of the town of Osijek. Upstream of Osijek, the river showed a tendency for improvement.
Ključne riječi
cluster analysis; Drava River; microbiological parameters; organic pollution; physicochemical parameters
Hrčak ID:
75037
URI
Datum izdavanja:
19.12.2011.
Posjeta: 2.088 *