Full text
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| Author(s): |
Patrick Simões Dias
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Instituto Oceanográfico (IO/DIDC) |
| Defense date: | 2010-11-26 |
| Examining board members: |
Rosalinda Carmela Montone;
Maria Virgínia Petry;
Nilva Re Poppi
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| Advisor: | Rosalinda Carmela Montone |
| Abstract | |
Some oceanic islands, such as São Pedro e São Paulo Archipelago may be considered remote areas and preserved due to its distance from the mainland. However, these areas are not exempt from the influence of anthropogenic agents from coastal regions, such as persistent organic pollutants (POPs). This proposal aimed to determine the occurrence and distribution of POPs in marine biota of São Pedro e São Paulo Archipelago. Samples extractions were performed with microwave and organochlorine pesticides and PCBs/PBDES was respectively analysed by gas chromatography with electron capture detection and mass spectrometry. The predominant compounds were PCBs and DDTs that presented, respectively, the maximum concentrations 127.7 and 34.37 ng g-1 to Exocoetus volitans (Flying fish), 98.15 and 8.89 ng g-1 to Sula leucogaster (Brown Booby) and 90.5 and 18.86 ng g-1 to Grapsus grapsus (Sally Lightfoot crab). The low levels of contaminants suggest a relative degree of isolation and preservation, but the occurrence and distribution profiles of PCBs supports the hypothesis that the main source of contamination in remote areas is long range atmospheric transport, and demonstrates the ubiquity of those pollutants in the marine environment. (AU) | |
| FAPESP's process: | 08/51321-3 - Persistent organic pollutants in the São Pedro and São Paulo Archipelago marine biota |
| Grantee: | Patrick Simões Dias |
| Support Opportunities: | Scholarships in Brazil - Master |