Dam reservoirs as an efficient trap for historical pollution: the passage of Hg and Pb through the Ohre River, Czech Republic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13520%2F18%3A43893824" target="_blank" >RIV/44555601:13520/18:43893824 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985831:_____/18:00492584 RIV/61388980:_____/18:00492584 RIV/61989592:15310/18:73590924

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s12665-018-7761-3" target="_blank" >http://dx.doi.org/10.1007/s12665-018-7761-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s12665-018-7761-3" target="_blank" >10.1007/s12665-018-7761-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dam reservoirs as an efficient trap for historical pollution: the passage of Hg and Pb through the Ohre River, Czech Republic

Popis výsledku v původním jazyce

The concentration of Hg and Pb pollutants was examined in sediments of a central European lowland river, the OhA (TM) e 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 OhA (TM) e River downstream environment.

Název v anglickém jazyce

Dam reservoirs as an efficient trap for historical pollution: the passage of Hg and Pb through the Ohre River, Czech Republic

Popis výsledku anglicky

The concentration of Hg and Pb pollutants was examined in sediments of a central European lowland river, the OhA (TM) e 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 OhA (TM) e River downstream environment.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

<a href="/cs/project/GA17-06229S" target="_blank" >GA17-06229S: Vývoj sedimentace v přehradních nádržích jako antropogenních bariérách v říčních systémech: od materiálové bilance po osud polutantů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Environmental Earth Sciences

ISSN

1866-6280

e-ISSN

—

Svazek periodika

77

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

574," nestránkováno"

Kód UT WoS článku

000442083300001

EID výsledku v databázi Scopus

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