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      Distribuição, fracionamento e mobilidade de elementos traço em sedimentos superficiais Translated title: Distribution, fractional and mobility of trace elements in stream sediments

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          Translated abstract

          The gold and iron mining activities in the Velhas River yield considerable amounts of suspended solids as well as metals to the hydrological system of the region. The risks were assessed by sequential extraction procedures. They were carried out in sediment samples, aiming to evaluate the presence of Co, Cr, Cu, Ni, Zn and As. Although being at high levels in some parts of the river (e.g. As 527 mg g-1 and Cr 475 mg g-1) they are associated with the residual fraction. Mobility factors were also calculated and show that these species are enriched along the river, e.g. for As 0.02 at the spring and 0.33 at the high course of the river.

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          Chemical Speciation in the Environment

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            Ecovision World Monograph Series

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              The Environmental Geochemistry of Mineral Deposits Part A

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                Author and article information

                Journal
                qn
                Química Nova
                Quím. Nova
                Sociedade Brasileira de Química (São Paulo, SP, Brazil )
                0100-4042
                1678-7064
                October 2007
                : 30
                : 5
                : 1249-1255
                Affiliations
                [01] Belo Horizonte MG orgnameCentro Federal de Educação Tecnológica de Minas Gerais Brasil
                [02] Ouro Preto MG orgnameUniversidade Federal de Ouro Preto orgdiv1Departamento de Geologia, Escola de Minas Brasil
                [03] Ouro Preto MG orgnameUniversidade Federal de Ouro Preto orgdiv1Instituto de Ciências Exatas e Biológicas orgdiv2Departamento de Química Brasil
                Article
                S0100-40422007000500037 S0100-4042(07)03000537
                10.1590/S0100-40422007000500037
                e98213f9-3444-4d11-9410-5de6190099f3

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 20 December 2006
                : 25 August 2006
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 44, Pages: 7
                Product

                SciELO Brazil

                Categories
                Artigo

                fractionation,trace elements,sediments
                fractionation, trace elements, sediments

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