Concentrations and physicochemical speciation of heavy metals in urban runoff sediment from São Gonçalo—Rio de Janeiro/Brazil
| Autor: | Carlos Marclei Arruda Rangel, Marilia Teresa Lima do Nascimento, Bruno Cezar Baptista Rodrigues, José Antônio Baptista Neto, Gustavo Vaz de Melo, Ana Dalva de Oliveira Santos, Estefan Monteiro da Fonseca |
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| Rok vydání: | 2016 |
| Předmět: |
Pollution
Global and Planetary Change Metal contamination 010504 meteorology & atmospheric sciences media_common.quotation_subject Soil Science Sediment Geology Heavy metals 010501 environmental sciences Contamination 01 natural sciences Metropolitan area Speciation Environmental chemistry Environmental Chemistry Environmental science 0105 earth and related environmental sciences Earth-Surface Processes Water Science and Technology media_common Urban runoff |
| Zdroj: | Environmental Earth Sciences. 75 |
| ISSN: | 1866-6299 1866-6280 |
| DOI: | 10.1007/s12665-016-6000-z |
| Popis: | Urban runoff sediment samples were analyzed for heavy metal concentrations in different neighborhoods in Sao Goncalo, Metropolitan region of Rio de Janeiro-Brazil. This study was undertaken to assess the anthropogenic impact of metal concentrations of urban roadside sediments from Sao Goncalo and to estimate the potential mobility of selected metals (Zn, Cu, Pb, Cr and Ni) using a sequential partitioning extraction. The concentrations of heavy metals in this work were compared with reported values from other cities and urban areas. This study highlights the urban runoff sediment as a potential source for heavy metals. The physicochemical speciation of heavy metal highlight the potential bioavailability for all metals, but Cr. Three contamination indexes: geoaccumulation index, contamination factor and Pollution Load Index, were used in order to assess the level of metal contamination in the study area, which demonstrated the contamination originating from the urban runoff sediments. |
| Databáze: | OpenAIRE |
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