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Determination of Ra-226 and Pb-210 in sediment samples from Pantanal da Nhecolândia, Mato Grosso do Sul

Grant number: 12/07557-8
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): August 01, 2012
Effective date (End): December 31, 2013
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
Principal Investigator:Sandra Regina Damatto
Grantee:Levi Francisco dos Santos
Home Institution: Instituto de Pesquisas Energéticas e Nucleares (IPEN). Secretaria de Desenvolvimento Econômico (São Paulo - Estado). São Paulo , SP, Brazil

Abstract

Pantanal, in the southwest part of Brazil, is one of the world's largest freshwater wetland. This natural ecosystem has been affected due to urban contamination, irregular use of the land, tourism without control and excessive agricultural defensive utilization. In order to verify possible changes in this environment, a study was established in Pantanal da Nhecolândia, Mato Grosso do Sul, Brazil in 2010. Three sediment cores were collected in three small ponds, in Nhumirim farm. The objectives of this project are to determine the sedimentation rate using the 210Pb dating method and with other results, like the chemical composition of the sediments, evaluate the environmental impact caused by the land uses. For a better understand of the results obtained factorial analysis, cluster analysis and principal component analysis will be applied.