The Fate of Atmospherically Derived Pb in Central European Catchments: Insights from Spatial and Temporal Pollution Gradients and Pb Isotope Ratios

0433722 - ÚTIA 2015 RIV US eng J - Článek v odborném periodiku
Bohdálková, Leona - Novák, M. - Štěpánová, M. - Foltová, D. - Chrastný, V. - Miková, J. - Kuběna, Aleš Antonín
The Fate of Atmospherically Derived Pb in Central European Catchments: Insights from Spatial and Temporal Pollution Gradients and Pb Isotope Ratios.
Environmental Science and Technology. Roč. 48, č. 8 (2014), s. 4336-4433. ISSN 0013-936X. E-ISSN 1520-5851
Grant CEP: GA MŠMT ED1.1.00/02.0070
Institucionální podpora: RVO:67985556 ; RVO:67179843
Klíčová slova: AMBIENT AIR-QUALITY * LEAD BIOGEOCHEMISTRY * DEPOSITION TRENDS * NORTHERN ENGLAND * CENTRAL ONTARIO * FOREST SOILS * PEAT BOGS * WATERS * ELEMENT * METALS
Kód oboru RIV: DN - Vliv životního prostředí na zdraví; EH - Ekologie - společenstva (UEK-B)
Impakt faktor: 5.330, rok: 2014
http://library.utia.cas.cz/separaty/2014/E/kubena-0433722.pdf

Soils in polluted regions are generally regarded as a delayed, long-lasting source for Pb contamination of aquatic systems. Lead deposited on topsoil is slowly transported downward with particulate and colloidal organic matter, driven by infiltrating precipitation. Then, Pb is tightly retained in mineral soil. Lead export from catchments is extremely low and decoupled from the atmospheric input. We tested this hypothesis in 11 small catchments, differing in pollution levels. Input/ouput Pb fluxes were monitored for 14-15 years in an era of decreasing industrial Pb emission rates. Between 1996/1997 and 2010, Pb deposition fluxes decreased significantly, on average by 80%. At the beginning of the monitoring, Pb export constituted 2 to 58% of Pb input. At the end of the monitoring, Pb export constituted 2 to 95% of Pb input. Highly polluted sites in the northeast exported significantly more Pb than less polluted sites further south.
Trvalý link: http://hdl.handle.net/11104/0239394