Metal quantification in the sediment of the Rio Grande reservoir, Billings Complex (SP) Bárbara Rani-Borges, Thaís Fabiane Gomes Martins, Karen de Souza Ferreira, Ivan Edward Biamont-Rojas, Marcelo Pompêo

Abstract

Abstract: Considering sediment as an indicator of pollution in freshwater supply reservoirs and that metals can cause damage to organisms and water quality degradation, this study aimed to analyze the concentrations of chromium and lead in the sediment of the Rio Grande reservoir, in addition to comparing results within the limits established by CONAMA. The samples were collected at 3 different points along the reservoir. The metal analysis followed USEPA method 3050-B and the reading was performed by a spectrophotometer. It was concluded that the concentrations of metals were not in compliance with the legislation. In addition, some points presented alarming concentration levels, confirming the importance of sediment monitoring systems for a good management system and protection of the spring sources.