Use of chemometric tools to determine the source of metals in sediments of the rivers of the Turvo/Grande Hydrographical Basin, São Paulo state, Brazil

Author(s)

Campanha, Mariele B. ^[1] ; Romera, Joao Paulo ^[1] ; Coelho, Jessica ^[1] ; Pereira-Filho, Edenir R. ^[2] ; Moreira, Altair B. ^[1] ; Bisinoti, Marcia C. ^[1]

Affiliation

^[1] Sao Paulo State Univ Julio de Mesquita Filho UNES, Inst Biosci Literature & Exact Sci, Dept Chem & Environm Sci, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil

^[2] Univ Fed Sao Carlos, Dept Chem, BR-13565905 Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: Journal of the Brazilian Chemical Society; v. 25, n. 4, p. 665-674, APR 2014.
• Web of Science Citations: 1

Abstract

In this work, nine metals were determined in superficial samples and sediment cores obtained from five sampling sites in the Preto, Turvo, and Grande Rivers during the wet and dry seasons. The metals were determined by flame atomization atomic absorption spectrometry. Principal component analysis of the data was performed to evaluate the factors responsible for the variations in metal concentrations. Granulometry and organic matter were the determining factors of metals concentrations. In the Preto River (urban area), high Zn concentrations are due to anthropic sources, whereas the high levels of total nitrogen, Al, Cr, Cu, Fe, K, Mn, and Ni in the Turvo river (damming, rural area) are due to agricultural runoff. Although lower concentrations of metals were observed at the remaining sites, violations of the guide values for sediment quality, particularly for Cr and Mn, indicate the need for management strategies for the Turvo/Grande Hydrographic Basin. (AU)

• FAPESP's process: 09/12147-0 - Metals biogeochemistry in river sediments from Turvo/Grande Watershed
• Grantee: Mariele Barboni Campanha
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 12/23066-4 - The role of aquatic humic substances on availability of toxic metal and a propose of a labile organic matter in aquatic environments
• Grantee: Márcia Cristina Bisinoti
• Support Opportunities: Regular Research Grants
• FAPESP's process: 10/09271-9 - Contamination evaluation and behavior of metals in sediments, fish tissue and surface water samples of rivers of the Turvo/Grande watershed
• Grantee: Márcia Cristina Bisinoti
• Support Opportunities: Regular Research Grants