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Toxicity and bioaccumulation of cadmium in the colonial green algaScenedesmus obliquus

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Abstract

A laboratory investigation was conducted to study the extent and efficiency of cadmium bioaccumulation inScenedesmus obliquus by subjecting this alga to varied sublethal Cd concentrations. The influence of cell population age on Cd bioaccumulation was also studied. Under the experimental conditions employed, growth was not significantly affected by Cd concentrations ranging from 0.01 ppm to 1.00 ppm. At concentrations above 1.00 ppm, however, growth was inhibited markedly. Increases in external Cd concentration caused an increase in total bioaccumulation over the entire range of concentrations, which did not significantly affect growth. Efficiency of Cd bioaccumulation was also concentration dependent, but maximum accumulation efficiency occurred in a medium with a Cd concentration lower than that medium in which maximum total bioaccumulation occurred. Age of the cell population influenced the extent of Cd bioaccumulation. Rapidly growing, young cultures accumulated less Cd than older cultures approaching stationary growth phase.

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Authors and Affiliations

  1. Department of Biological Sciences, Illinois State University, 61761, Normal, Illinois

    Jerome R. Cain

  2. Department of Chemistry, Illinois State University, 61761, Normal, Illinois

    Charlene M. Hayden

  3. Center for Disease Control, United States Public Health Service, 30333, Atlanta, Georgia

    Daniel C. Paschal

Authors
  1. Jerome R. Cain
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  2. Daniel C. Paschal
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  3. Charlene M. Hayden
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Cain, J.R., Paschal, D.C. & Hayden, C.M. Toxicity and bioaccumulation of cadmium in the colonial green algaScenedesmus obliquus . Arch. Environ. Contam. Toxicol. 9, 9–16 (1980). https://doi.org/10.1007/BF01055495

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  • DOI: https://doi.org/10.1007/BF01055495

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