Podrobnosti záznamu

    Increasing arsenic concentrations in runoff from 12 small forested catchments (Czech Republic, Central Europe): Patterns and controls
    Bláha, Vladimír
    Erbanová, Lucie
    Fottová, Daniela
    Krachler, Michael
    Novák, Martin
    Přechová, Eva
    Veselovský, František
    Voldřichová, Petra
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Science of the Total Environment
    Roč. 408, č. 17
Výraz tezauru
    Arsenic,Catchment,Runoff,Acidification reversal,Climate change
Klíčové slovo
Abstrakt (anglicky)
   We present monthly As concentrations in surface runoff from 12 headwater catchments with north-south gradient of decreasing pollution in CR for a period of 1996-2008. Between 1996 and 2003, max. As concentrations in runoff did not change, and were less 1 ppb in the rural south and less 2 ppb in the industrial north. During the subsequent two years max. As concentrations in runoff increased, reaching 60% of the drinking water limit (10 ppb). Starting in 2006, max As concentrations returned to lower values at most sites. The pH of runoff has not changed since 1996. Elevated As conc. in runoff in 2004-2005 may reflect climate change through changing hydrological conditions at some sites. Dry conditions may result in elevated production of DOC and S oxidation. Subsequent wet conditions may be accompanied by acidification leading to faster dissolution of As-bearing sulfides, Fe-oxyhydroxides, and organic matter. Anaerobic domains exist in well-aerated upland soils for hours following precip
   itation events.
    Česká geologická služba
Kód přispěvatele
    ČGS (RIV)
Zdrojový formát
Datum importu
    15. 10. 2014