Environmental Monitoring and Assessment
| Autor: | Santos, Elisângela Costa, Celino, Joil José, Santos, Vera Lúcia Câncio Souza, Souza, José Roberto Bispo de |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
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| Zdroj: | Repositório Institucional da UFBA Universidade Federal da Bahia (UFBA) instacron:UFBA |
| DOI: | 10.1007/s10661-013-3297-x |
| Popis: | Texto completo: acesso restrito. p. 9857-9869 Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2014-04-01T15:48:08Z No. of bitstreams: 1 art%3A10.1007%2Fs10661-013-3297-x.pdf: 599145 bytes, checksum: f9c6959ad18a22b421e4ecb90c665173 (MD5) Made available in DSpace on 2014-04-01T15:48:08Z (GMT). No. of bitstreams: 1 art%3A10.1007%2Fs10661-013-3297-x.pdf: 599145 bytes, checksum: f9c6959ad18a22b421e4ecb90c665173 (MD5) Previous issue date: 2013 Elemental analysis and isotopic composition evaluated the impact of human activity at the surface sediments in the largest island of Todos os Santos Bay, northeastern Brazil. Saturated hydrocarbons (n-alkanes and isoprenoids) by gas chromatography coupled with a flame ionization detector and 13C by mass spectrometer were determined from 30 surface sediment samples in mangroves at the Itaparica Island (Bahia-Brazil) in the rainy and dry season. These data, distribution, and ratio of carbon/nitrogen showed a mixture of sources: continental, marine, and anthropogenic ones. From the chromatographic profiles, light oil contamination was observed in the dry regions of Baiacu, Campinas, and Ponta Grossa, while in Jiribatuba it was observed during the rainy season. However, δ13C results during dry and rainy season in the presence of oil also showed in Misericordia and Cacha Prego districts for both periods and Ponta Grossa during the rainy season. Principal component analysis, using a correlation matrix, revealed the latent relationships among all the surface sediment stations investigated and confirmed our analytical results. |
| Databáze: | OpenAIRE |
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