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Geochronology and heavy metal flux to Guanabara bay, Rio de Janeiro state: a preliminary study Anais da ABC (AABC)
Baptista Neto,José A.; Peixoto,Tomás C.S.; Smith,Bernard J.; Mcalister,John J.; Patchineelam,Soraya M.; Patchineelam,Sambasiva R.; Fonseca,Estefan M..
Guanabara Bay, located in Rio de Janeiro state. It is surrounded by the second most important metropolitan area of the country. Over recent decades, land disturbance and urbanization in the surrounding area has significantly increased sediment input to the bay and had a negative effect on its overall environmental. This is especially related to high volumes of untreated sewage and industrial effluents. This study evaluates the history of this human impact through detailed examination of a sediment core taken from the northern portion of Guanabara Bay. A geochronology is established using 210Pb dating and related to organic carbon and heavy metal fluxes to the sediments. This gave a calculated net average sedimentation rate for the core of 0.67 cm.year-1....
Tipo: Info:eu-repo/semantics/article Palavras-chave: 210Pb; Geochronology; Flux of heavy metal; Guanabara Bay.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401317
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