Effect of river water, sediment and time on the toxicity and bioavailability of molinate to the marine bacterium (Microtox)
| Autor: | Yin Latt Phyu, Richard P. Lim, M.St.J. Warne |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Environmental Engineering
biology Chemistry Ecological Modeling Sediment Pesticide biology.organism_classification Pollution Vibrio Bioavailability Vibrionaceae Environmental chemistry Toxicity Aliivibrio fischeri Waste Management and Disposal Surface water Water Science and Technology Civil and Structural Engineering |
| Zdroj: | Water Research. 39:2738-2746 |
| ISSN: | 0043-1354 |
| DOI: | 10.1016/j.watres.2005.04.051 |
| Popis: | The toxicity and bioavailability of molinate to Vibrio fischeri (Microtox((R))) were determined in both laboratory and river water in the absence and presence of sediment after 0, 24, 48, 72 and 96-h exposure. The bioavailability of molinate, expressed as 5min EC50s (bioluminescence) and their fiducial limits calculated using initial measured concentrations, to V. fischeri in laboratory water in the absence and presence of sediment ranged from 1.8 (1.7-2.1) to 3.6 (3.5-3.7) mgL(-1) and 1.3 (1.2-1.4) to 4.2 (3.5-4.5) mgL(-1), respectively. The corresponding values in river water and river water plus sediment were 1.7 (1.6-1.8) to 3.8 (3.6-4.1) and 1.3 (1.3-1.4) to 4.6 (4.2-4.9) mgL(-1), respectively. River water did not significantly (P>0.05) reduce the bioavailability of molinate to V. fischeri compared to that of laboratory water. However, the presence of sediment significantly (P 0.05) affect the loss of molinate during the 96-h exposure period. However, the presence of sediment significantly (P |
| Databáze: | OpenAIRE |
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