ASPECTOS QUÍMICO-BIOLÓGICOS DA ÁGUA DA LAGOA ALEXANDRINO CÂNDIDO GOMES, PORANGATU- GO NO PERÍODO DE FEVEREIRO 2014 A AGOSTO DE 2016

Abstract

The quality of surface water in urban collections suffer chronically with the influence of the environment in their surroundings, accumulating solid waste, industrial, commercial and domestic pollutants. This study aims to produce a diagnosis of the quality of the pond water Alexandrian Cândido Gomes from the analysis of physical-chemical parameters and biological surface water, located in the city of Porangatu / GO, covering 2400 m² of waterfront with a liquid surface average of 2 square kilometers in the urban area and consists of approximately 6 square kilometers in area of contribution. Samples were collected for a period of two years between the months of March 2015 to April 2016 in six selected points, two collections for each point. Samples were analyzed for determination of the parameters pH, temperature, concentration of ions (arsenic, cadmium, lead, chromium, mercury), and the term tolerant coliforms. The mercury and arsenic ions were not detected during the study, pH and temperature maintained an average of 7.3 and 29.8 ° C respectively. Some samples presented significant amounts of toxic metals and fecal coliforms. Cadmium in one of the sites was higher than recommended by current legislation in the dry season in 2015. The lead, in the dry season showed a value above the recommended for one of the points, as well as chromium. The test fecal coliforms showed good water quality in most of the plumbed period, despite being above the permitted at one point in the rainy season in 2015. It highlighted the role of government and private the need to strategize and review existing, seeking to improve the site, promoting the constant monitoring the areas most vulnerable to pollution detected in the environment and revitalizing the waterfront and health vegetation, giving security to users who attend, as a recreational area and resort this scenic city landmark and its residents the confidence of well-being in relation to health.