SEASONAL VARIATIONS, METAL DISTRIBUTION AND WATER QUALITY IN THE TODOS OS SANTOS RIVER, SOUTHEASTERN BRAZIL: A MULTIVARIATE ANALYSIS
Journal Title: Journal of Water and Environmental Sciences - Year 2017, Vol 1, Issue 2
Abstract
In aquatic habitats, metal contamination from natural and anthropogenic sources continues to pose a concern for human and environmental health. Thus, it is important to complete monitoring studies to assess patterns and the extent of metal contamination in these ecosystems. The objective of this study was to determine the concentrations of 31 chemical elements and water quality parameters of the Todos os Santos River located in the Mucuri Valley, Minas Gerais, Brazil. A multivariate statistical analysis was used to determine any seasonal and spatial patterns from the data. Results demonstrated that metals including Al, Fe, and Ni exceeded Brazilian and international guidelines Nutrients as P also exceed water quality standards. Principal components analysis indicated distinct geographical and seasonal patterns for multiple elements with hierarchical cluster analysis confirming the observed spatial patterns of contamination in the Todos os Santos River.
Authors and Affiliations
Cláudia AF PEREIRA, Luiz Fernando Oliveira MAIA, Márcia Cristina da Silva FARIA, Paulo H FIDENCIO, Cleide H BOMFETI, Fernando BARBOSA, Jairo Lisboa RODRIGUES
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