Toxicity Identification Evaluations in Baquirivu-Guaçu River

Authors

  • Sandra Valéria Buratini Setor de Ecotoxicologia Aquática (EAHE), Companhia de Tecnologia de Saneamento Ambiental (CETESB), São Paulo, SP, Brazil
  • M. A. Aragão Setor de Ecotoxicologia Aquática (EAHE), Companhia de Tecnologia de Saneamento Ambiental (CETESB), São Paulo, SP, Brazil
  • R. P. A. Araújo Setor de Ecotoxicologia Aquática (EAHE), Companhia de Tecnologia de Saneamento Ambiental (CETESB), São Paulo, SP, Brazil
  • Valéria Aparecida Prósperi Setor de Ecotoxicologia Aquática (EAHE), Companhia de Tecnologia de Saneamento Ambiental (CETESB), São Paulo, SP, Brazil
  • L. I. Werner Setor de Ecotoxicologia Aquática (EAHE), Companhia de Tecnologia de Saneamento Ambiental (CETESB), São Paulo, SP, Brazil

DOI:

https://doi.org/10.5132/jbse.2007.03.008

Keywords:

Ceriodaphnia dubia, surface waters, toxicity, toxicity identification evaluations

Abstract

Toxicity Identification Evaluation studies (TIE) include a set of procedures, conducted in three progressive phases (characterization, identification and confirmation), in which toxic samples are submitted to physical and chemical treatments, with the purpose of identifying the causes of toxicity. Manipulations relative to Phase I and Phase II TIE procedures were applied to superficial water samples collected in Baquirivu-Guaçu River (Alto Tietê Basin), between 2003 and 2005. Acute ecotoxicological assays with Ceriodaphnia dubia were performed. Results from Phase I experiments showed non polar organic compounds (commonly present in non-treated domestic sewage) as responsible for the toxicity of two samples. With a third sample, results indicated cationic metals as probable toxic agents and Phase II manipulations permitted identifying zinc as the responsible for acute effects to the microcrustacean.

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Published

10-10-2007

How to Cite

Buratini, S. V., Aragão, M. A., Araújo, R. P. A., Prósperi, V. A., & Werner, L. I. (2007). Toxicity Identification Evaluations in Baquirivu-Guaçu River. Ecotoxicology and Environmental Contamination, 2(3), 257–262. https://doi.org/10.5132/jbse.2007.03.008

Issue

Vol. 2 No. 3 (2007)

Section

Original Articles

License

Copyright (c) 2007 Ecotoxicology and Environmental Contamination

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