Assessment of the water quality in a large reservoir in semiarid region of Brazil 1

@inproceedings{Lopes2014AssessmentOT,
  title={Assessment of the water quality in a large reservoir in semiarid region of Brazil 1},
  author={Fernando Bezerra Lopes and Eunice Maia de Andrade and Ana C. M. Meireles and Helena Maria Gonçalves Becker and Adriana A. Batista},
  year={2014}
}
The aim of this study was to identify spatial and temporal variations in water quality of Orós reservoir, Ceará, Brazil, as well as the sources of contamination. To get this information the Principal Component Analysis (PCA) and Cluster Analysis (CA) was used. Water samples were collected at seven (geo-referenced) points, from April 2008 to March 2011, totalling 4,032 samples. The following attributes of the waters were analysed: temperature, pH, CE, Ca2+, Mg2+, Na+, K+, Cl-, HCO3 -, SO4… CONTINUE READING