Počet záznamů: 1
Geochemical distribution and mobility of heavy metals in sediments of urban streams affected by combined sewer overflows
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SYSNO ASEP 0360299 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Geochemical distribution and mobility of heavy metals in sediments of urban streams affected by combined sewer overflows Tvůrce(i) Hnaťuková, Petra (UH-J) RID, SAI, ORCID Zdroj.dok. Journal of Hydrology and Hydromechanics. - : Ústav pro hydromechaniku AV ČR, v. v. i.. - : Ústav hydrológie SAV - ISSN 0042-790X
Roč. 59, č. 2 (2011), s. 85-94Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. SK - Slovensko Klíč. slova sediments ; heavy metals ; urban streams ; sequential extraction ; combined sewer overflows Vědní obor RIV BK - Mechanika tekutin CEP IAA200600902 GA AV ČR - Akademie věd CEZ AV0Z20600510 - UH-J (2005-2011) UT WOS 000294700300002 DOI 10.2478/v10098-011-0007-7 Anotace Study was undertaken to assess the impact of combined sewer overflows (CSOs) on distribution and mobility of heavy metals in sediments of streams in Prague, Czech Republic. Contents of total and extractable heavy metals (Cu, Zn, Pb, Cd, Cr and Ni), mineralogical phases and other sediment properties were measured in 44 surficial sediment samples. The observed mobility order of metals was Cd > Zn > Ni > Cu > Pb > Cr. There was a considerable increase in Zn mobility and increase of Cu associated with the oxidisable fraction in the sediments below CSO discharges. Cd was revealed as the most mobile heavy metal with percentages of extraction of approximately 40–60% in acid soluble fraction. Pb was mainly found in reducible fraction associated with Fe/Mn (oxi)hydroxides. In terms of environmental significance, Cd and Zn can be particularly mobile and bioavailable under acidic conditions, because they are predominantly bound in labile fractions. Pracoviště Ústav pro hydrodynamiku Kontakt Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Rok sběru 2012
Počet záznamů: 1