A multispecies toxicity assessment procedure using flow microcalorimetry: Comparison with other toxicity evaluation methods |
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| Authors: | A Beaubien L Lapierre A Bouchard C Jolicoeur |
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| Institution: | 1. Centre d'Application en Calorimétrie et Thermodynamique, Département de Chimie, Université de Sherbrooke, Sherbrooke (Québec) Canada J1K 2R1;2. Environnement Québec, Complexe Scientifique, 2700 rue Einstein, Ste-Foy (Québec) Canada G1P 3W8 |
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| Abstract: | The acute toxicity of various contaminants and effluents towards a heterogenous aerobic culture has been determined using flow microcalorimetry. The toxicity of these contaminants and effluents was also evaluated towards a marine bacteria (type Photobacterium phosphoreum, Microtox test), a green algae (Selenastrum capricornutum, inhibition of growth) and a small crustacean (Daphnia magna, inhibition of mobility). The 50% (IC50) or 20% (IC20) inhibitory concentrations were obtained for each toxicity test, and compared to each other. The results of the present study suggest that, under proper conditions, a mixed aerobic culture could yield toxicity estimates comparable to those obtained from a combination of single species tests. |
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