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Inhibition Effect on the Allium cepa L. Root Growth When Using Hexavalent Chromium-Doped River Waters

  • F. R. Espinoza-QuiñonesEmail author
  • N. Szymanski
  • S. M. Palácio
  • A. N. Módenes
  • M. A. Rizzutto
  • F. G. SilvaJr
  • A. P. Oliveira
  • A. C. P. Oro
  • N. Martin
Article

Abstract

The effect of Cr6+ on Allium cepa root length was studied using both clean and polluted river waters. Seven series of Cr6+-doped polluted and non-polluted river waters were used to grow onions. Chromium concentration (Cr6+) of 4.2 mg L−1(EC50 value), doped in clean river water caused a 50% reduction of root length, while in organically polluted samples similar root growth inhibition occurred at 12.0 mg Cr6+ L−1. The results suggested that there was a dislocation to higher values in toxic chromium concentration in polluted river water due to the eutrophization level of river water.

Keywords

Dislocating toxicity effect Cr6+-doped river waters 

Notes

Acknowledgments

We gratefully acknowledge the Brazilian Light Synchrotron Laboratory for partial financing of this study through the 4654 project.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • F. R. Espinoza-Quiñones
    • 1
    Email author
  • N. Szymanski
    • 1
  • S. M. Palácio
    • 1
  • A. N. Módenes
    • 1
  • M. A. Rizzutto
    • 2
  • F. G. SilvaJr
    • 1
  • A. P. Oliveira
    • 1
  • A. C. P. Oro
    • 1
  • N. Martin
    • 1
  1. 1.Chemical Engineering Postgraduate Program-NBQWest Paraná State UniversityToledoBrazil
  2. 2.Physics InstituteUniversity of São PauloSao PauloBrazil

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