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Journal of Radioanalytical and Nuclear Chemistry

, Volume 321, Issue 3, pp 875–883 | Cite as

Tracking Hg historical inputs by Pb-210 geochronology for the Itapessoca Estuarine Complex, Pernambuco, Brazil

  • Paulo T. F. AlbuquerqueEmail author
  • Thierry Frédou
  • Gilberto N. Arruda
  • Crescêncio A. Silva Filho
  • Alesxandro F. Nascimento
  • Maria José da Silva
  • Elvis J. De França
Article
  • 32 Downloads

Abstract

The application of geochronology for tracking mercury contamination was remarkably demonstrated in the Itamaracá Estuarine Ecosystem, Pernambuco State, Brazil. Here, two sediment cores were sampled, layered and analyzed by the Gas Flow Proportional Counter technique for determining 210Pb, radionuclide applied to geochronology. Mercury was quantified in sediment samples by Cold Vapor Atomic Absorption Spectrometry, varying from 0.17 to 1.29 mg kg−1 in deep sediments. From 210Pb results, the sedimentation rates of 0.84 (0.07) cm year−1 and 1.03 (0.22) cm year−1 confirmed Hg contamination in Itamaracá since mid-1965. Events of extreme precipitation and drought have been also related to the distribution pattern for Hg concentrations in deep sediments.

Keywords

Mercury Lead-210 Deep sediments Sediment dating Estuary contamination 

Notes

Acknowledgements

The authors are grateful to the Fundação Capes, Fundação Rondônia de Amparo ao Desenvolvimento das Ações Científicas e Tecnológicas e à Pesquisa (FAPERO), Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco (FACEPE) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for the financial support. The English text of this paper has been revised by Sidney Pratt, Canadian, MAT (The Johns Hopkins University), RSAdip—TESL (Cambridge University).

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • Paulo T. F. Albuquerque
    • 1
    • 2
    Email author
  • Thierry Frédou
    • 1
  • Gilberto N. Arruda
    • 3
  • Crescêncio A. Silva Filho
    • 3
  • Alesxandro F. Nascimento
    • 3
  • Maria José da Silva
    • 4
  • Elvis J. De França
    • 3
  1. 1.Departamento de Pesca e AquiculturaUniversidade Federal Rural de PernambucoRecifeBrazil
  2. 2.Departamento de Engenharia de Pesca e AquiculturaFundação Universidade Federal de RondôniaPresidente MédiciBrazil
  3. 3.Centro Regional de Ciências Nucleares do NordesteComissão Nacional de Energia NuclearRecifeBrazil
  4. 4.Departamento de QuímicaUniversidade Federal Rural de PernambucoRecifeBrazil

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