Počet záznamů: 1
Dam reservoirs as an efficient trap for historical pollution: the passage of Hg and Pb through the Ohře River, Czech Republic
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SYSNO ASEP 0492584 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Dam reservoirs as an efficient trap for historical pollution: the passage of Hg and Pb through the Ohře River, Czech Republic Tvůrce(i) Majerová, L. (CZ)
Bábek, O. (CZ)
Navrátil, Tomáš (GLU-S) RID, SAI, ORCID
Nováková, Tereza (GLU-S) SAI, ORCID
Štojdl, J. (CZ)
Elznicová, J. (CZ)
Hron, K. (CZ)
Matys Grygar, Tomáš (UACH-T) RID, SAI, ORCIDČíslo článku 574 Zdroj.dok. Environmental Earth Sciences. - : Springer - ISSN 1866-6280
Roč. 77, August 2018 (2018)Poč.str. 12 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova dam reservoirs ; data evaluation ; fluvial transport ; secondary pollution Vědní obor RIV DD - Geochemie Obor OECD Environmental sciences (social aspects to be 5.7) Vědní obor RIV – spolupráce Ústav anorganické chemie - Geochemie Institucionální podpora GLU-S - RVO:67985831 ; UACH-T - RVO:61388980 UT WOS 000442083300001 EID SCOPUS 85051657403 DOI 10.1007/s12665-018-7761-3 Anotace The concentration of Hg and Pb pollutants was examined in sediments of a central European lowland river, the Ohře River. The pollution originated from several sources that were active mainly between the thirteenth and twentieth centuries. Its passage through the river system has been altered by two dam reservoirs built in the 1960s. The pre-dam pollution levels were evaluated from historical floodplain and dam reservoir sediments. We evaluated influence of damming on pollution status of sediments using the concept of ambient background concentrations based on the examination of polymodality in the distribution of concentrations and identification of breaks between the concentration modes. The Skalka Dam Reservoir has suppressed the transport of Hg pollution from a chemical factory in Marktredwitz, Germany (nineteenth and twentieth centuries): the dam has decreased the Hg concentrations in the downstream channel sediments by an order of magnitude compared to pre-dam conditions. The concentration of Hg in suspended particulate matter in the outflow from the Skalka Reservoir varies between 10 and 60% of the inflow concentrations depending on the discharge. The Nechranice Dam Reservoir has suppressed the passage of Pb pollution originating from historical metal mining, which has led Pb concentrations in sediments downstream to decrease to the levels of average topsoil pollution in the sub-catchments without ore mining. Both reservoirs act as sediment traps and thus play a beneficial role for the quality of the Ohře River downstream environment. Pracoviště Geologický ústav Kontakt Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Rok sběru 2019
Počet záznamů: 1