Acute toxicity evaluation of olive oil mill wastewaters: A comparative study of three aquatic organisms
✍ Scribed by S. M. Paixão; E. Mendonça; A. Picado; A. M. Anselmo
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 125 KB
- Volume
- 14
- Category
- Article
- ISSN
- 1520-4081
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✦ Synopsis
Acute toxicity of olive mill wastewaters traditional and continuous processes collected ( from different regions of Portugal was evaluated using three test species Vibrio fischeri formerly ) Photobacterium phosphoreum, Thamnocephalus platyurus, and Daphnia magna and correlated with several physical and chemical parameters. Acute toxicity of these effluents, expressed in LC or EC , 50 50 ranged from: 0.16 to 1.24% in Microtox test, 0.73 to 12.54% in Thamnotoxkit F test, and 1.08 to 6.83% in Daphnia test. These values reflect the high toxicity of the olive mill wastewaters to all test species. Statistical analysis of the results shows a high correlation between the two microcrustacean bioassays. Microtox test did not correlate significantly with the other bioassays used. A significative correlation ( ) ( ) p F 0.05 could also be established between L E C obtained in the microcrustacean tests and some 50 physicochemical parameters of the effluent.