Determination of Cu, Pb e Zn in sediment of the region of Pontal da Barra, Laranjal (Patos Lagoon, Pelotas – RS, Brasil)

Authors

  • Josie Schwartz Caldas Instituto Federal Sul-Rio-Grandense / Tecnóloga em Saneamento Ambiental Universidade Federal de Pelotas / Bióloga Universidade Católica de Pelotas / Especializanda Em Biologia da Conservação
  • Pedro José Sanches Filho Instituto Federal Sul-Rio-Grandese / Professor Pesquiador

DOI:

https://doi.org/10.14210/bjast.v17n1.p13-18

Abstract

The region of Pontal da Barra is cited by the Tropical Database (BDT) as a priority area for preservation. In this context, we developed a study aimed at determining the levels of heavy metals such as Cu, Pb, Zn in the sediment of this region, the estuary of Patos Lagoon, located in the São Gonçalo Canal that connects with the Lagoon. The sampling took place in May 2010, on seven points. Samples were extracted by acid (3:1 HCl:HNO3 and 1mL of HClO4) at 90 °C and the extracts analyzed by flame atomic absorption spectrophotometry. The heavy metal concentrations varied among points: Cu – 4.4 to 13.2mg kg-1; Pb – 11.67 to 23.21mg kg-1; Zn of 20.3 to 84.0mg kg-1. The results show low levels of contamination in comparison with the Canadian Quality Guide for Estuarine Sediments.

Author Biographies

Josie Schwartz Caldas, Instituto Federal Sul-Rio-Grandense / Tecnóloga em Saneamento Ambiental Universidade Federal de Pelotas / Bióloga Universidade Católica de Pelotas / Especializanda Em Biologia da Conservação

Tecnóloga em Saneamento Ambiental - IFSul; Bióloga - UFPEL; Especializanda em Biologia da Conservação - UCPEL

Pedro José Sanches Filho, Instituto Federal Sul-Rio-Grandese / Professor Pesquiador

Doutor em Química - UFRGS Professor e Pesquisador - IFSul

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Published

2013-05-10

Issue

Vol. 17 No. 1 (2013)

Section

Research Articles

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