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Master's Dissertation
DOI
https://doi.org/10.11606/D.21.2019.tde-13022019-141310
Document
Author
Full name
Vaitsa Maciel Haratsaris
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2018
Supervisor
Committee
Montone, Rosalinda Carmela (President)
Castro, Ítalo Braga de
Madureira, Luiz Augusto dos Santos
Title in Portuguese
PCBs e DDTs em grânulos de plástico depositados em praias do litoral paulista
Keywords in Portuguese
Brasil
costa de São Paulo
microplástico
Poluentes orgânicos persistentes
\"pellets\"
Abstract in Portuguese
Os grânulos de plástico ("pellets") no oceano podem adsorver diversas substâncias hidrofóbicas como os poluentes orgânicos persistentes (POPs). Neste trabalho foi avaliada a ocorrência de bifenilos policlorados (PCBs) e diclorodifeniltricloroetano (DDTs) em "pellets" coletados em 37 praias de 13 municípios ao longo do litoral paulista, sudeste do Brasil. Os POPs foram extraídos com solventes orgânicos e quantificados por cromatografia em fase gasosa com detecção por captura de elétrons (CG-DCE) e espectrometria de massas (CG/EM). A deposição dos "pellets" e a concentração dos PCBs (1,3 - 5.112 ng g-1) e DDTs (14,1 - 1.214 ng g-1) foi maior na Baixada Santista, onde se localiza o maior complexo industrial do país e o maior porto da América Latina, seguido do litoral norte não industrializado e o litoral sul com atividade pesqueira. Os dados de POPs em "pellets" deste estudo foram comparados aos publicados anteriormente utilizando grânulos com vários graus de descoloração da mesma área e aos resultados do International Pellet Watch (grânulos amarelados) apresentando concentrações similares e contribuíram para acompanhar o "status" de contaminação por POPs na costa do Estado de São Paulo.
Title in English
PCBs and DDTs in plastic pellets from São Paulo coast, Brazil
Keywords in English
"pellets"
Brazil
microplastics
Persistents organic pollutants
Sao Paulo coast
Abstract in English
Pellets in the ocean can adsorb various hydrophobic substances such as persistent organic pollutants (POPs).This study evaluated the occurrence of polychlorinated biphenyls (PCBs) and dichloro-diphenyltrichloroethane (DDT) adsorbed on plastic pellets. The pellets were collected in 37 beaches of 13 cities, along the São Paulo coast, southern Brazil. The POPs were extracted with organic solvents and quantified by gas chromatograph equipped with electron capture detector (GC-ECD) and mass spectrometer (GC/MS). The deposition of "pellets" and the concentration of PCBs (1.3-5,112 ng g-1) and DDTs (14.1 - 1,214 ng g-1) were greater in the Santos Bay, where the largest industrial complex in the country and the largest port in Latin America are located; followed by the non-industrialized north coast and the south coast presenting fishing activity. The POPs data was compared to those previously published using granules with a mixture of several degrees of discoloration from the same area and the results from International Pellet Watch (yellowing pellets). The results indicated concentrations and contributed to monitoring POPs contamination status on the coast of the State of São Paulo.
 
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Publishing Date
2019-02-15
 
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