Study of the environmental contamination of human and veterinary medicines in the south Brazil
Caner , Laurent
Primeiro membro da banca
Bortoluzzi, Edson Campanhola
Segundo membro da banca
Hullebusch, Eric Van D.
Terceiro membro da banca
Quarto membro da banca
Santos, Maria Alice Santanna dos
Quinto membro da banca
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Southern Brazil is an agricultural region that is experiencing a strong growth in both cereal and animal production. The intensification of agricultural practices as well as the growing urbanization in this region also generates a strong anthropic pressure for the aquatic environments and the soils. This work aims to better understand the impact of use and release of pharmaceutical compounds (human or veterinary) on rivers and soils through the example of the Rio Guaporé watershed. Soil studies have shown contamination by pharmaceutical compounds in agricultural areas where spreading of manure appears to be an important source of contamination and antibiotic resistance genes. The compounds detected vary according to the type of land use and the spreading. The significant erosion of soils in this region and their leaching by rainfall can then promote the transport of these contaminants to aquatic environments. The study of aquatic environments, through epilithic biofilm and POCIS, showed that areas with the highest agricultural production are the most contaminated. However, high contamination by urban areas has also been highlighted. These results are related to the absence of urban sanitation networks in this region. The nature and extent of contamination are influenced by seasonal variations. The use of sucralose and carbamazepine as tracers of antropic activity proved promising when its presence was evaluated in biofilms and POCIS samplers.
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