• JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
 
  Bookmark and Share
 
 
Master's Dissertation
DOI
https://doi.org/10.11606/D.21.2020.tde-09052022-101029
Document
Author
Full name
Basílio Magno Tavares Sotão Neto
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2020
Supervisor
Committee
Montone, Rosalinda Carmela (President)
Beretta, Magda
Castro, Ítalo Braga de
Title in Portuguese
Ocorrência de poluentes orgânicos persistentes (POPs) e produtos de cuidados pessoais (PCPs) nos sedimentos superficiais da Baía de Todos os Santos (Bahia - Brasil)
Keywords in Portuguese
Bifenílos policlorados (PCBs)
Contaminantes emergentes
Filtros UV
Fragrâncias
Pesticidas organoclorados (OCPs)
Abstract in Portuguese
O presente trabalho teve como objetivo avaliar a ocorrência dos poluentes orgânicos persistentes (POPs) e produtos de cuidados pessoais (PCPs) nos sedimentos superficiais da Baía de Todos os Santos (BTS), que abriga uma heterogeneidade de ecossistemas, assim como inúmeras atividades ligadas aos setores industriais, portuários e petroquímicos. Os POPs e PCPs dos sedimentos foram extraídos via Soxhlet com solvente orgânico, e quantificados através de um cromatógrafo em fase gasosa acoplado a um espectrômetro de massas com triplo quadrupolo (GC/MS/MS). Os PCBs e DDTs foram os únicos contaminantes detectáveis dentre os POPs, com concentrações relativamente baixas que variaram de <0,0025 a 4,56 ng g-1 e <0,005 a 0,95 ng g-1, respectivamente. As maiores concentrações desses compostos foram encontradas nas regiões próximas aos centros urbanos de Salvador e Itaparica. A ocorrência dos PCBs esteve associada principalmente à deposição atmosférica, enquanto que a dos DDTs foi relacionada a uma utilização antiga. Para os PCPs (fragrâncias e filtros UV), as concentrações variaram de <0,25 a 27,48 ng g-1, e suas ocorrências foram relacionadas com o lançamento direto e contínuo de efluentes urbanos e industriais ao longo de toda a baía. De maneira geral, a relativa homogeneidade das concentrações dos POPs e PCPs na BTS, ocorreu principalmente em função da alta hidrodinâmica local. Os DDTs foram os únicos compostos que apresentaram correlação com o carbono orgânico total e granulometria. Os resultados obtidos nesse estudo podem contribuir para diminuir a escassez de informações a respeito dos níveis de contaminação por POPs e PCPs na BTS.
Title in English
Occurrence of persistent organic pollutants (POPs) and personal care products (PCPs) in the superficial sediments of the Todos os Santos Bay (Bahia - Brasil)
Keywords in English
Emerging contaminants
Fragrances
Organochlorine pesticides (OCPs)
Polychlorinated biphenyls (PCBs)
UV filters
Abstract in English
The present work aimed to evaluate the occurrence of persistent organic pollutants (POPs) and personal care products (PCPs) of superficial sediments of the Todos os Santos Bay (BTS), which houses a heterogeneity of ecosystems, as well as numerous activities related to the industrial, port and petrochemical sectors. POPs and PCPs from sediments samples were extracted via Soxhlet with organic solvent, and quantified using a gas chromatograph coupled to a triple quadrupole mass spectrometer (GC/MS/MS). PCBs and DDTs were the only detectable contaminants among POPs, with relatively low concentrations ranging from <0,0025 to 4,56 ng g-1 and <0,005 to 0,95 ng g-1, respectively. The highest concentrations of these compounds were found in the regions close to the urban centers of Salvador and Itaparica. The occurrence of PCBs was mainly associated with atmospheric deposition, whereas that of DDTs was related to an old use. For PCPs (fragrances and UV filters), concentrations ranged from <0,25 to 27,48 ng g-1, and their occurrences were related to the direct and continuous release of urban and industrial effluents throughout the bay. In general, the relative homogeneity of the concentrations of POPs and PCPs in BTS, occurred mainly due to the high local hydrodynamics. DDTs were the only compounds that showed a correlation with total organic carbon and granulometry. The results obtained in this study can contribute to reduce the scarcity of information regarding the levels of contamination by POPs and PCPs in BTS.
 
WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.
Publishing Date
2022-05-18
 
WARNING: Learn what derived works are clicking here.
All rights of the thesis/dissertation are from the authors
CeTI-SC/STI
Digital Library of Theses and Dissertations of USP. Copyright © 2001-2024. All rights reserved.