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    Análise qualitativa da água do Ribeirão Samambaia em Catalão (GO)
    (Universidade Federal de Goiás, 2018-08-21) Souza, Alynne Lara de; Sarmento, Antover Panazzolo; http://lattes.cnpq.br/4025685702530313; Santos, Maria Rita de Cássia; http://lattes.cnpq.br/2598029192393541; Santos, Maria Rita de Cássia; Sarmento, Antover Panazzolo; Paiva, Ed Carlos Rosa; Coelho, Luciana Melho
    The present study had as objective to analyze qualitatively by means of physical and chemical parameters Ribeirão Samambaia in the municipality of Catalão (GO). In this work the following parameters were taken as reference: Dissolved Oxygen, Hydrogenion Potential, Temperature, Conductivity, Turbidity, Total Solids, Acidity, Alkalinity, Ammoniacal Nitrogen, Nitrite, Nitrate, Phosphorus, Chloride, Sulphate, Hardness and Hexavalent Chromium. For the analyzes of dissolved oxygen, hydrogenation potential, temperature, conductivity, turbidity and total solids, thirteen campaigns of 10/2016 to 02/2018 were performed. Analyzes of Acidity, Alkalinity, Ammoniacal Nitrogen, Nitrite, Nitrate, Phosphorus, Chloride, Sulphate, Hardness and Chrome were carried out six campaigns from 06/2017 to 02/2018. It was also collected from 11/2017 to 02/2018 sediments in the same points and was carried out the grain size test, EDX and XRD technique. Based on the results, it was verified that, in relation to the parameters: OD, pH, Nitrate, Nitrite, Sulphate, Phosphorus, Hardness, Chlorides the results were within the limits established by Resolution 357 (CONAMA, 2005) for class 1. The parameters of alkalinity and acidity do not present limits for their quantities, but indicate the buffering capacity for acids and bases in Ribeirão water. In the resolution also are not established values for temperature, however it influences in diverse chemical reactions. The turbidity values in the December and February campaigns exceeded the limit range established by Resolution and the chromium presented results below the limit of detection. The granulometric classification of the Ribeirao Samambaia sediments was characterized by the sand fraction. The average concentrations of the chemical species of sediments determined by EDX were similar in points 1 and 2, highlighting the high values for Si, Fe, Al and P. By the XRD analysis, the predominance of silicon oxide was observed. IQACCME presented a "Good" track on both points, with a score of 92 on P1 and 89 on P2. The only parameter that failed was turbidity in the collections of December 2017 and February 2018, which influenced the classification of the Samambaia stream.