Ocena znaczenia tlenkow zelaza i manganu w sorpcjach metali ciezkich w glebach zanieczyszczonych, w swietle ekstrakcji sekwencyjnej

• Autorzy: Karczewska A.

Warianty tytułu

EN

Function of iron and manganese oxides in the sorption of heavy metals in polluted soils as related to the sequential extraction

• Języki publikacji: PL

Abstrakty

PL

Przedstawiono wyniki ilustrujące udział frakcji związanych z tlenkami żelaza i manganu w całkowitej zawartości Cu, Pb, Zn oraz metaloidu As w 20 próbkach gleb zanieczyszczonych, na przykładzie stref ochronnych hut miedzi oraz rejonu polimetalicznego złoża Żeleźniak w Górach Kaczawskich

EN

Presented are the contributions of fractions bound to iron and manganese oxides in total concentrations of Cu, Pb, Zn, and As in 20 samples of polluted soils collected in two regions: the protection zones of copper smelters and the vicinity of metal ore mining center Żeleźniak in the Kaczawskie Mts. Sequential extraction was carried out according to the method by Zeien and Brummer, in which 7 fractions were separated; in this number those specifically bound (f2), occluded in manganese oxides (f3), as well as occluded in amorphous (f5) and crystalline (f6) iron oxides. Speciation results differed widely among the soils. Metal species bound to manganese oxides made up 1-20% of total Cu, 1-26% Pb, 4-27% Zn, and <1% As; those bound to amorphous iron oxides composed 3-24% Cu, 1-54% Pb, 3-25% Zn, and 42-90% As; whereas those bound to crystalline iron oxides constituted 3-29% Cu, 1-53% Pb, 9-34% Zn, and 5-46% As. On the basis of f3, f5 and f6 fractions, "sorption coefficients" were calculated which determine the capacities of soil components to bind metals. Those coefficients, figured up for cationic metals make the following order: MnOx>> FeOx am> FeOx cr., whereas the sequence of As sorption coefficients is: FeOx am>> MnOx ~ FeOx cr.

Słowa kluczowe

PL

olow; sorbenty; tlenki manganu; gleby; metale ciezkie; cynk; zanieczyszczenia gleb; tlenki zelazowe; miedz

EN

lead; sorbent; manganese oxide; soil; heavy metal; zinc; soil contaminant; iron oxide; copper

• Wydawca: -
• Czasopismo: Roczniki Państwowego Zakładu Higieny
• Rocznik: 2004
• Tom: 55
• Numer: Supl.
• Opis fizyczny: s.119-120,rys.,tab.,bibliogr.

Twórcy

autor

Karczewska A.

• Akademia Rolnicza, ul.Grunwaldzka 53, 50-357 Wroclaw