Analysis of metals in mangrove ecosystem of Passa Vaca River, Salvador, Brazil

  • Leila Maria Mendes Santos Programa de Pós-Graduação em Geoquímica: Petróleo e Meio Ambiente, Universidade Federal da Bahia, Salvador
  • Rosemário Cequeira Souza Departamento de Química Analítica, Universidade Federal da Bahia, Salvador
  • Daniela Santos Anunciação Programa de Pós-Graduação em Geoquímica: Petróleo e Meio Ambiente, Universidade Federal da Bahia, Salvador
  • Zenira Cardoso Vilasboas Viana Departamento de Bioquímica e Biofísica, Universidade Federal da Bahia, Salvador
  • Vera Lúcia Câncio Souza Santos Programa de Pós-Graduação em Geoquímica: Petróleo e Meio Ambiente, Universidade Federal da Bahia, Salvador

Abstract

The objective of this research was to make a preliminary assessment of environmental conditions with respect to the contribution of metals concentrations in the mangrove river sediment Passa Vaca, Salvador (BA). The metals were determined chromium (Cr), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni), barium (Ba), strontium (Sr), vanadium (V) and zinc (Zn). Surface sediment were collected at four points (P1, P2, P3 and P4) of the mangrove major anthropogenic influences. The samples were pre-treated by acid digestion and the determinations of metallic elements was by Inductively Coupled Plasma Optical Emission Spectroscopy (ICP OES). The results reported values higher concentrations at point P4 concentrations for the Fe (28,101.65 µg g-1), followed by V (62.96 µg g-1), Mn (60.57 µg g-1) and Cr (53.09 µg g-1), while at point P2 higher concentration was found to Zn (47.95 µg g-1) P2. The correlation analysis and principal component (PCA) revealed a strong correlation between the metals studied among the finer fractions of the pellet and the elements Fe, Cr and Ni. Taking into account the values of the thresholds of adverse effects (TEL) of NOAA, the concentrations of Cu and Cr in P4, outperformed this index.

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Published
2017-05-23
How to Cite
SANTOS, Leila Maria Mendes et al. Analysis of metals in mangrove ecosystem of Passa Vaca River, Salvador, Brazil. Acta Brasiliensis, [S.l.], v. 1, n. 2, p. 1-7, may 2017. ISSN 2526-4338. Available at: <http://revistas.ufcg.edu.br/actabra/index.php/actabra/article/view/44>. Date accessed: 02 dec. 2024. doi: https://doi.org/10.22571/Actabra12201744.
Section
Environmental Chemistry