Your browser doesn't support javascript.
loading
Contamination by microplastics and sorbed organic pollutants in the surface waters of the Tietê River, São Paulo-SP, Brazil.
de Moraes, Nicoli Gomes; Olivatto, Glaucia Peregrina; Lourenço, Felipe Machado de Oliveira; Lourenço, Ana Laura Athayde; Garcia, Gustavo Munhoz; Pimpinato, Rodrigo Floriano; Tornisielo, Valdemar Luiz.
Afiliación
  • de Moraes NG; University of São Paulo (USP), Center for Nuclear Energy in Agriculture and the Environment (CENA), Ecotoxicology Laboratory, CEP, 13400-970, Piracicaba, SP, Brazil.
  • Olivatto GP; University of São Paulo (USP), Center for Nuclear Energy in Agriculture and the Environment (CENA), Ecotoxicology Laboratory, CEP, 13400-970, Piracicaba, SP, Brazil.
  • Lourenço FMO; University of São Paulo (USP), Center for Nuclear Energy in Agriculture and the Environment (CENA), Ecotoxicology Laboratory, CEP, 13400-970, Piracicaba, SP, Brazil.
  • Lourenço ALA; University of São Paulo (USP), Center for Nuclear Energy in Agriculture and the Environment (CENA), Ecotoxicology Laboratory, CEP, 13400-970, Piracicaba, SP, Brazil.
  • Garcia GM; University of São Paulo (USP), Center for Nuclear Energy in Agriculture and the Environment (CENA), Ecotoxicology Laboratory, CEP, 13400-970, Piracicaba, SP, Brazil.
  • Pimpinato RF; University of São Paulo (USP), Center for Nuclear Energy in Agriculture and the Environment (CENA), Ecotoxicology Laboratory, CEP, 13400-970, Piracicaba, SP, Brazil.
  • Tornisielo VL; University of São Paulo (USP), Center for Nuclear Energy in Agriculture and the Environment (CENA), Ecotoxicology Laboratory, CEP, 13400-970, Piracicaba, SP, Brazil.
Heliyon ; 10(16): e36047, 2024 Aug 30.
Article en En | MEDLINE | ID: mdl-39224265
ABSTRACT
Microplastics (MPs) are particles between 1 µm and 5 mm in size, originating mainly from poor solid waste and effluent management, that can reach water bodies from various sources. In freshwater environments, the occurrence, distribution, and characterization of this new class of pollutants are still little explored, especially in Brazil. The aim of this study was to assess the occurrence of MPs, as well as the presence and concentration of polychlorinated biphenyls (PCBs) sorbed to these particles in the surface waters of the Tietê River - SP. Surface water samples were collected in duplicate during the dry and wet seasons. The identification and characterization of the MPs was carried out through visual inspection and the chemical identity of the particles was verified using Fourier transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR). For the analysis of PCBs adsorbed to the MPs, the sample extracts were analyzed by gas chromatography coupled with mass spectrometry (GC-MS). The MPs were found in concentrations ranging from 6.67 to 1530 particles m-3, with a predominance of the polymers polyethylene (PE, with 58.17 %) and polypropylene (PP, with 23.53 %). The main morphological categories identified were fragments (56.63 %), fibers (28.42 %), and transparent films (13.06 %). Higher abundances of PCBs were observed in the lower size range, between 0.106 and 0.35 mm. The total concentrations of PCBs in MPs ranged from 20.53 to 133.12 ng g-1. The results obtained here are relevant for understanding the dynamics and level of contamination of MPs and organic pollutants sorbed to these particles in the Tietê River, as well as helping with mitigation measures for the restoration and preservation of this ecosystem.
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE País/Región como asunto: America do sul / Brasil Idioma: En Revista: Heliyon Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE País/Región como asunto: America do sul / Brasil Idioma: En Revista: Heliyon Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Reino Unido