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篇目详细内容 |
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【篇名】 |
Exposure-response of Cr(III)-organic complexes to Saccharomyces cerevisiae |
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【刊名】 |
Frontiers of Environmental Science and Engineering in China |
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【刊名缩写】 |
Front.Environ.Sci.Engin.China |
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【ISSN】 |
1673-7415 |
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【EISSN】 |
1673-7520 |
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【DOI】 |
10.1007/s11783-010-0008-5 |
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【出版社】 |
Higher Education Press and Springer-Verlag Berlin
Heidelberg |
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【出版年】 |
2010 |
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【卷期】 |
4
卷2期 |
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【页码】 |
196-202
页,共
7
页 |
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【作者】 |
Nivedita CHATTERJEE;
Zejiao LUO;
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【关键词】 |
Cr(III)-organic complexes; Saccharomyces cerevisiae; toxicity; EC50; bioavailability |
【摘要】 |
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Hexavalent chromium [Cr(VI)] bioreduction produces soluble Cr(III)-organic complexes. The Cr(III)-organic complexes are relatively stable once they are formed, and no data about their toxicity were reported. Therefore, this study aims to investigate the bioavailability and toxicity of the soluble Cr(III)-organic complexes. Saccharomyces cerevisiae L-1 wild type yeast strain was chosen as the model organism and Cr(III)-citrate was selected as the representative compound of the Cr(III)-organic complexes. The short-term chronic aquatic toxicity tests of the Cr(III)-citrate was explored by measuring growth inhibition, direct viable cell count, dry biomass, biosorption, and the amount of CO2 production. Cr(III)-citrate exerted a toxicity of 51mg/L with an EC50, which was calculated from the percent growth inhibition. These toxicity data would be helpful to define the toxic potential of the organo-chromium-III compounds in the environment. |
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