Assessment of Anthropogenic Impacts on the Water Quality of Marreco River, Brazil, Based on Principal Component Analysis and Toxicological Assays

作者：Palacio Soraya Moreno^*; Espinoza Quinones Fernando Rodolfo; de Pauli Aline Roberta; Piana Pitagoras Augusto; Queiroz Caroline Bressan; Fabris Simony Camila; Fagundes Klen Marcia Regina; Veit Marcia Teresinha

来源：Water, Air, and Soil Pollution, 2016, 227(9): 307.

DOI：10.1007/s11270-016-3025-6

• Metallic elements
• Vibrio fischeri
• Pearson's correlation
• Freshwater

In this study, the water quality of the Marreco River in the municipality of Toledo, PR, Brazil was investigated as part of a monitoring program. Conventional water pollution parameters (pH, turbidity, conductivity, COD, DO, ammonia, and total phosphorus) and metal elements were analyzed. Acute toxicity bioassays were conducted by the bacterial bioluminescence method, using the indicator Vibrio fischeri to evaluate the toxic effect of the contaminants. Principal components analysis (PCA) and Pearson's correlation were applied to assess the statistical correlation between the physicochemical parameters and metals in the water samples. There is strong evidence, supported by Pearson and PCA analyses, of the presence of elevated levels of K and Ca associated with anthropogenic activities installed in the river basin.

• 出版日期2016-9