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Distribution of heavy metals in small urban streams
Hnaťuková, Petra ; Benešová, Libuše (advisor) ; Komínková, Dana (referee) ; Zimová, Magdalena (referee)
Conclusion Combined sewer system significantly deteriorates water and sediment quality in urban streams studied. lmportant waste water producers of several industries are localized around Průmyslová streetin the catchmentarea of Botič and in Vysočany district in the catchment area of Rokýka. Therefore, Botič is affected mainly by Cu, Ni, Pb a Zn and Rokytka by Cd, Cu, Ni a Pb through the dischargeof CSOs in caseof rain and stormwater. Metal concentrations as well as evaluated environmental risk show significant increase due to discharge of CSOs in the longitudinal profile of streams affected by, urban drainage. Changes in distribution of Cu anď Zn to easílyavailable f|actionsrr.ereobservedin sedimentsof Botíč,which receives dischargefrom 33 CSOs. For copper it u'as proportionalincreaseof oxidizable fraction, for zink proportional increaseof exchangeble/carbonatefraction.The observedmobility order of the sir trace metals studied according to mobility factor was Cď > Zn > Ni > Cu > Pb > Cr in sedimentsof Botičand Rokytka and Cd > Zn> Ni > Pb > Cu > Cr in sedimentsof Kunratický Stream. The analysis of heary metals loadings.geochemicaldistributionand other physicochemical parametershas enabled to identify specific areas of metal contamination. However, no statistically significant correlations between...

National Repository of Grey Literature : 113 records found   1 - 10nextend  jump to record:
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14 Benešová, Lenka
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