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Revista de Chimie (Rev. Chim.), Year 2015, Volume 66, Issue 8,





PETRA IONESCU, VIOLETA-MONICA RADU, DEAK GYORGY, ALEXANDRU ANTON IVANOV, ELENA DIACU
Lower Danube Water Quality Assessment Using Heavy Metals Indexes

Abstract:

The presence of heavy metals in aquatic systems represents a threat on environment biodiversity and on human health, becoming a significant concern worldwide. This paper proposes the Lower Danube water quality assessment by using two metal indices, heavy metal pollution index and metal index. To evaluate these indexes, ten locations were selected in Lower Danube River between km 375 to km 175, and the following six metals: Zn, Ni, Cd, Cu, Pb and Cr were analyzed in water samples, for a period of 24 months. All obtained values for heavy metal pollution index were below the limit of 100, established on the basis of the pollution index. The metal index values indicate that the water quality in the monitored areas falls within class I and class II according to the classification of water quality using the metal indexes. The introduction of these two heavy metal indexes can contribute significantly to water quality assessment, becoming a useful tool for water pollution level monitoring, and being also able to predict its tendency for the future. Keywords: heavy metal pollution index, metal index, Danube River


Issue: 2015, Volume 66, Issue 8
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