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Estimation of heavy metals in little blue heron (Egretta caerulea) collected from sepetiba bay, rio de janeiro, brazil

Abstracts

Samples of liver and kidney of Little Blue Heron (Egretta caerulea) collected on Sepetiba Bay, Rio de Janeiro, Brazil, were analysed for their copper, zinc, cadmium, lead, chromium and nickel content. Mean concentration levels in liver and kidney (μg.g-1 dry weight) were 6.32955 and 6.57136 (Cd); 78.17409 and 96.89409 (Zn); 44.01727 and 65.20864 (Cu); 41.15091 and 39.62318 (Pb); 2.80091 and 4.16455 (Cr); and 9.27182 and 9.91091 (Ni), respectively. Results indicate relatively high trace metal contamination in E. caerulea, showing potential widespread biological and mutagenic adverse effects at trophic levels, and therefore, signalling risk to human health.

Heavy metal; Contamination; Sepetiba Bay; Egretta caerulea


Amostras de fígado e rim de Garça-azul pequena (Egretta caerulea) coletadas na Baía de Sepetiba, Rio de Janeiro, Brasil, foram analisadas quanto às concentrações-traço de cobre, zinco, cádmio, chumbo, cromo e níquel. Os níveis médios de concentração no fígado e no rim (μg.g-1 de peso seco) foram 6,32955 e 6,57136 (Cd); 78,17409 e 96,89409 (Zn); 44,01727 e 65,20864 (Cu); 41,15091 e 39,62318 (Pb); 2,80091 e 4,16455 (Cr) e 9,27182 e 9,91091 (Ni), respectivamente. Estes resultados indicam contaminação relativamente alta de metais traço em E. caerulea, evidenciando potencial poder de generalização adversa de efeitos biológicos e mutagênicos em níveis tróficos, e, por conseguinte sinalizando risco para a saúde humana.

Metais pesados; Contaminação; Baía de Sepetiba; Egretta caerulea


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Publication Dates

  • Publication in this collection
    31 Jan 2011
  • Date of issue
    Dec 2010

History

  • Received
    01 July 2009
  • Accepted
    20 May 2010
  • Reviewed
    27 Oct 2009
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