ANÁLISE DOS PARÂMETROS FÍSICO-QUÍMICOS E METAIS PRESENTES NAS NASCENTES DO RIO MEIA PONTE.

Abstract

In this dissertation was determined variations in physicochemical parameters and metal pollutants in water collected in the springhead of the Meia Ponte river Goiás, samples were collected from 20 points downstream and upstream and the data were statistically treated. The physicochemical parameters evaluated were pH, conductivity, dissolved oxygen, temperature and luminosity. The pH and luminosity showed in accord with by law. With respect to conductivity and dissolved oxygen were observed variations when compared to CONAMA 357-2005 standards, the conductivity parameter in the collection point 17 in both in the downstream as well as in the upstream the indexes was too high, it can be justified because of the production of ruminants next to the collection points and also to the have high ground slope, facilitating the flow of wastes from the production to the riverbed. For OD parameter were observed anomalies in points 10,11,12,13,14,15 and 19, those increases are justified because by factors such as: anthropic actions and flood plains in the collection locations. For metals pollutants were observed in all the samples, that Cu and Cr are in accord to the standards set out by law for drinking waters, Cd and Pb showed high values only in point 1 which can mainly due to antropic action, already Zn showed a high value only in point 3, Mn on the other hand was the metal that was above the standard in highest number of points, alterations can be observed in the points 1,2,9,10,11,13,15,16,18, and 20, this was probably due to the geological characteristics of the region which the samples were collected.