Analysis of metals in mangrove ecosystem of Passa Vaca River, Salvador, Brazil
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.
Downloads
References
Berg, J.M.; Tymoczko, J.L.; Stryer, L. 2014. Bioquímica. 7a ed. Guanabara Koogan, Rio de Janeiro, 826 p.
Brandão, F.P.; Marques, S.; Rodrigues, S.; Santos, B.; Travasso, R.; Venâncio, C.; Pereira, R.; Santaliestra, M.O.; Soares, A.M.V.M.; Gonçalves, F.; Lopes, I. 2011. Influência da temperatura na toxicidade de cobre em girinos de rã verde Pelophylax perezi. Captar Ciencia e Ambiente para Todos, 3(1): 66-77.
Campaneli, L.B.; Souza, C.M.M.; Ribeiro, T.S.; Rezende, C.E.; Azevedo, R.A.; Almeida, M.G.; Vitória, A.P. 2010. Variação espaço-temporal de metais em aguapé [Eichhornia crassipes (Mart.) Solms)], material particulado aderido às raízes de aguapé e no sedimento em dois rios do sudeste brasileiro. Biotemas, 23(4): 119-128.
CETESB-COMPANHIA DE TECNOLOGIA DE SANEAMENTO AMBIENTAL. 2011.Guia nacional de coleta e preservação de amostras: Água, Sedimento, Comunidades aquáticas e Efluentes líquidos.
Chen, M.; Ma, L.Q.; Harris, W.G.1999. Baseline concentrations of 15 trace elements in Florida surface soils. Journal of Environmental Quality, 28:1173-1181.
Cheng, W.H.; Yap, C.K. 2015. Potential human health risks from toxic metals via mangrove snail consumption and their ecological risk assessments in the habitat sediment from Peninsular Malaysia. Chemosphere, 135:156-165.
Doherty, G.; Brunskill, G.; Ridd, M. 2000. Natural and enhanced concentrations of trace metals in sediments of Cleveland Bay, Great Barrier Reef Lagoon, Australia. Marine Pollution Bulletin, 41(7-12): 337-344.
Esteves, F.A. 2011. Fundamentos de limnologia. 3a. ed. Interciências, Rio de Janeiro, 826 p.
Liu, J.; Wu, H.; Feng, J.; Li, Z.; Lin, G. 2014. Heavy metal contamination and ecological risk assessments in the sediments and zoobenthos of selected mangrove ecosystems, South China. Catena, 119:136-142.
Wang, C.; Liu, S.; Zhao, Q.; Deng, L.; Dong, S. 2012. Spatial variation and contamination assessment of heavy metals in sediments in the Manwan Reservoir, Lancang River. Ecotoxicology and Environmental Safety, 82:32-39.
Lutz, E.; Thompson, M.I. 2012. Hot block digestion of soil, sediment, waste and tissue samples for total recoverable metals.
Moore, J.W.; Ramamoorthy, S. 1984. Heavy metals in natural Waters: Applied monitoring and impact assessment. Springer-Verlag, New York, 486 p.
NOAA-NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION. 1999. Screening Quick Reference Tables, National Oceanic and Atmospheric Administration.
Oliveira, D.D.; Souza-Santos, L.P.; Silva, H.K.P.; Macedo, S.J. 2014. Toxicity of sediments from a mangrove Forest patch in urban area in Pernambuco (Brazil). Ecotoxicology and Environmental Safety, 104:373-378.
Park, M.; Chon, H.T.; Marton, L. 2010. Mobility and accumulation of selenium and its relationship with other heavy metals in the system rocks/soils–crops in areas covered by black shale in Korea. Journal of Geochemical Exploration, 107(2): 161-168.
Pascoalini, S.S.; Lopes, D.M.; Falgueto, A.R.; Tognella, M.M.P. 2014. Abordagem ecofisiológica dos manguezais: uma revisão. Biotemas, 27(3): 1-11.
Pereira, G.C.; Ebecken, N.F.F. 2009. Knowledge discovering for coastal waters classification. Expert Systems with Application, 36(4): 8604-8609.
Primack, R.B.; Rodrigues, E. 2001. Biologia da Conservação. Planta, Londrina, 327p.
Rocha, M.B.; Silva, E.M.; Riascos, N.E.S. 2013. Avaliação da influência da oxigenação e da qualidade do sedimento sobre a sobrevivência de Scolelepis chilensis (Spionidae: Polychaeta) da Baía de Guanabara, Rio de Janeiro. Biotemas, 26(4): 85-92.
Torres, A. P.; Almeida, R. A. de 2008. Esboço sócio-ambiental da bacia hidrográfica do rio Passa Vaca, SSA-BA. GeoTextos, 4(1-2): 37-51.
