Determination of toxic metals in drainage pluvial channel sediment in urban area
DOI:
https://doi.org/10.6008/SPC2179-6858.2016.001.0017Keywords:
Toxic Metals, Storm Drainage, SedimentAbstract
This study was conducted in a rainwater drainage channel of the urban area of Pelotas, with the aim of determine the concentration of toxic metals (Cr, Cu, Ni, Pb and Zn) in the sediment carried by runoof. Were collected sample surface sediments at five points along the channel, the fraction less than 63µm was subjected to nitric perchloric acid extraction and the extracts analyzed by flame absorption spectrophotometry. The levels of toxic metals found varied for Cr 2.9 mg kg-¹ ± 15.4 % to 7.9 mg kg-¹ ± 16.4%, Cu 4.7 mg kg-¹ ± 11.0% to 20.5 mg kg-¹ ± 6.2% Ni was detected only in point 2 in the amount of 2.2 mg kg-¹ ± 2.0%, Pb 5.4 mg kg-¹ ± 2.9% to 22.6 mg kg-¹ ± 3.5% and Zn 49.0 mg kg-¹ ± 4.1 % to 100.2 mg kg-¹ ± 6.8%. In general, the analytes did not exceed the limits set by CONAMA 344/2004, causing no damage to biota and aquatic life.
Downloads
Downloads
Published
Issue
Section
License
Copyright (c) 2016 Ibero-American Journal of Environmental Sciences
![Creative Commons License](http://i.creativecommons.org/l/by-nc-nd/4.0/88x31.png)
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
The CBPC - Companhia Brasileira de Produção Científica (Brazil CNPJ: 11.221.422/0001-03) the material rights of the published works. The rights relate to the publication of the work anywhere in the world, including rights to renewals, expansions and dissemination of the contribution, as well as other subsidiary rights. All electronically published works may subsequently be published in printed collections under the coordination of this company and / or its partners. The authors preserve the copyright, but are not allowed to publish the contribution in another medium, printed or digital, in Portuguese or in translation.