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Temporal Decrease of Trivalent Chromium Concentration in a Standardized Algal Culture Medium: Experimental Results and Implications for Toxicity Evaluation


The fate of two trivalent chromium salts (nitrate and chloride) in ISO algal culture medium was followed over 72 h; i.e., the typical duration of algal toxicity tests. Fifty percent of the initial Cr spikes was lost from the solutions by 24 h, with losses up to 90% after 72 h. Monitoring of the temporal variability of Cr(III) concentrations in algal culture media appears necessary to better characterize the toxicity of trivalent chromium to algae.

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This research was partially supported by the Swiss National Science Foundation (grant 200020-101844). Dr. Pierre-Yves Favarger (Institut F.-A. Forel) helped with ICP-MS analysis and Sandra Levai (University of Geneva) with the search of primary literature sources.

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Correspondence to Davide A. L. Vignati.

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Vignati, D.A.L., Beye, M.L., Dominik, J. et al. Temporal Decrease of Trivalent Chromium Concentration in a Standardized Algal Culture Medium: Experimental Results and Implications for Toxicity Evaluation. Bull Environ Contam Toxicol 80, 305–310 (2008).

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  • Trivalent chromium
  • Algal ISO medium
  • Chromium toxicity
  • Chromium speciation