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Pb-phytoextraction by maize in a Pb-EDTA treated Oxisol Scientia Agricola
Pereira,Bruno Fernando Faria; Abreu,Cleide Aparecida de; Romeiro,Solange; Lagôa,Ana Maria Magalhães Andrade; Paz-González,Antônio.
One of the most viable strategies to restore metal contaminated soils is the introduction of plants specialized in their accumulation or able to tolerate very high metal concentrations. This research evaluated: i. the maize as a Pb-accumulator plant; ii. the effects of EDTA-chelating agent for Pb-uptake by maize; iii. amending effect of EDTA on the soil Pb-availability using different extracts. Treatments consisted of Pb rates (100; 200; 350; 1,200 and 2,400 mg kg-1) applied to a Rhodic Hapludox in the form of Pb3(NO)2 with (0.5 g kg-1) and without EDTA. Lead concentrations were determined in maize plant shoots. Soil available Pb was obtained using DTPA, Mehlich-3 and saturation solutions methods. Ionic speciation in the soil solution was performed using...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mehlich-3; DTPA; Phytoremediation; Available Pb; Ionic speciation.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000100008
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