Study of the environmental contamination of human and veterinary medicines in the south Brazil
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Date
2017-03-01Primeiro coorientador
Caner , Laurent
Segundo coorientador
Labanowski, Jérôme
Primeiro membro da banca
Bortoluzzi, Edson Campanhola
Segundo membro da banca
Hullebusch, Eric Van D.
Terceiro membro da banca
Aubertheau, Elodie
Quarto membro da banca
Santos, Maria Alice Santanna dos
Quinto membro da banca
Zanella, Renato
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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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