Abstract
Fluorescence depolarization is used to examine the effects of contaminants on the microviscosity of cell membranes of Ankistrodesmus sp. cells. One mg/L additions of Hg and Cd to the alga caused a change in the measured “index of viscosity” of the Ankistrodesmus cells in comparison to the index obtained by the addition of Zn and Pb. Elutriates from contaminated Niagara River sediment samples also caused an increase in the “index of viscosity,” whereas elutriate from uncontaminated sediments from the mid-lake station of Lake Ontario had no effect. This method has the potential for application in the assessment of the effects of contaminants on algal populations.
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