| Popis: |
Environmental contamination by emerging pollutants has been explored in different studies in the environmental area. This is due, in the most part, by the low efficiency of municipal wastewater treatment and the high chemical consumption. The watershed of the Alto Iguacu located in the Metropolitan Region of Curitiba has a high population density in your surroundings and, consequently, has some problems in water quality of its rivers. Considering this aspect, this study comprehended the evaluation of emerging contaminants in five rivers inside this watershed. Contamination by anti-inflammatory ibuprofen, paracetamol and diclofenac in surface water and sediment was evaluated for a year, a total of four sampling campaigns. Ibuprofen was found only in the first sampling, but in high concentrations in the Belemriver(729 ng.L-1). Diclofenac had been widely detected in water and it reached concentrations of 285 ng.L-1 in the third sampling in the Iguacu river. Unlike the rest, paracetamol was often quantified in the water, being the Iguacu and Belem rivers with more presence of this drug. It was also determined in sediments, especially in Bariguiriver, being founded 6,896 µg g-1. The presence of these compounds in the sampled rivers confirms an anthropogenic interference with the Alto Iguacu watershed, which suffers from unplanned urbanization |
