Análise físico-química das águas da Lagoa do Portinho, localizada na cidade de Parnaiba - PI

Abstract

Lagoa do Portinho is located in the state of Piauí, in the city of Parnaíba. Its waters are frequently used by bathers and fishermen, presenting great socioeconomic value for the region's residents. The present work aimed to analyze the physicalchemical parameters of the Lagoon's waters, since as it is of great relevance, quality control of its waters is important. The collection of water samples, class 2, were carried out during the period considered dry and rainy in the region. To characterize the lagoon waters, measurements were taken of hydrogen potential (pH), color, turbidity, total alkalinity, chlorides and total solids. The results of the physical-chemical analyzes indicated that the water quality of Lagoa do Portinho is within the limits established by Conama Resolution nº 357. However, the chloride and total hardness measurements exceeded the recommended values. This increase in the levels of these components is directly related to the high concentration of salts and other substances dissolved in the water, which directly affect these parameters.