Journal of
Environmental Chemistry and Ecotoxicology

  • Abbreviation: J. Environ. Chem. Ecotoxicol.
  • Language: English
  • ISSN: 2141-226X
  • DOI: 10.5897/JECE
  • Start Year: 2009
  • Published Articles: 189

Full Length Research Paper

Determination of trace metals in sediment samples of the Santa Bárbara Channel / Pelotas / RS / Brazil

Pedro José Sanches Filho
  • Pedro José Sanches Filho
  • Grupo de Pesquisas em Contaminantes Ambientais, GPCA, Instituto Federal Sul-Rio-Grandense-Campus Pelotas, RS, Brasil
  • Google Scholar
Glauco Rasmussen Betemps
  • Glauco Rasmussen Betemps
  • Grupo de Pesquisas em Contaminantes Ambientais, GPCA, Instituto Federal Sul-Rio-Grandense-Campus Pelotas, RS, Brasil
  • Google Scholar
Adriana Possas Mesenburg
  • Adriana Possas Mesenburg
  • Grupo de Pesquisas em Contaminantes Ambientais, GPCA, Instituto Federal Sul-Rio-Grandense-Campus Pelotas, RS, Brasil
  • Google Scholar
Patrícia Alfonso
  • Patrícia Alfonso
  • Grupo de Pesquisas em Contaminantes Ambientais, GPCA, Instituto Federal Sul-Rio-Grandense-Campus Pelotas, RS, Brasil
  • Google Scholar


  •  Accepted: 24 July 2013
  •  Published: 31 July 2013

Abstract

 

This work deals with the determination of heavy metals (Pb, Cr, Zn and Cu) in the sediment of Santa Barbara Channel, located in Pelotas, RS. Absence of studies of the levels of heavy metals, in this channel, associated with high toxicity, bioconcentration and biomagnification capacity of these analytes makes this work necessary and explains the validity of this study. Two grams of fraction (< 63 μm) of 6 sampling points, in triplicate, suffered acid digestion (4 ml of aqua regia + 1 ml of Milli-Q water and 1 ml of HClO4). The concentration of analytes in the extracts was performed with an atomic absorption spectrophotometer. The analytes were detected in all the sites, but at low levels of concentration, Cu (3.3 to 42.6 mg kg-1), Pb (4.7 to 16.2 mg kg-1), Zn (5.2 to 40.4 mg kg-1) and Cr (2.5 to 21.4 mg kg-1), observing a close relationship with the organic matter content and the sediments with grain size finer.

 

Key words: Trace metal pollution, Santa Bárbara channel, sediments, Urban environments.