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Temperature-based rapid toxicity test using Ceriodaphnia dubia
- Source :
- Water Science and Technology. 53:347-355
- Publication Year :
- 2006
- Publisher :
- IWA Publishing, 2006.
-
Abstract
- Toxicants, which may cause the inhibition to the biological process in sewage/wastewater treatment plant, need to be monitored within short time to prevent from serious damage. A new method, Temperature-based rapid toxicity test (TempTox test) using Ceriodaphnia dubia, was developed and compared with the standard 48 hr acute bioassay (Std. 48-hr test). Inorganic toxicants of cadmium, zinc, copper, cyanide, chromium (III), chromium (VI) and organic toxicants of phenol, PCP and pesticides of BPMC, Diazinon, Fenitrothion were tested for TempTox test and Std. 48-hr test. Because the TempTox test is based on just temperature control, C. dubia neonates were exposed to toxicants under high temperature (35.5 °C) condition without any complicated pretreatment. After given exposure time of 1, 1.25, 1.5 hours, the number of the live (no toxic effect) or the dead (toxic effect) was counted with eye without the aid of any microscope and median effective concentrations (EC50 values) were determined. From the results for all toxicants, the TempTox test was proved to be as sensitive as the Std. 48-hr test with shorter-time of just 1.25–1.5 hours. Moreover, the TempTox test was further much more sensitive than alternative bioassays such as the 1-hour I.Q. test and 30-minute Microtox. The TempTox test showed a high applicability of toxicity bioassay for real sewage/wastewater treatment plant by its easiness, rapidity and sensitivity. Finally, the prototype for short-term TempTox test was introduced.
- Subjects :
- Environmental Engineering
Diazinon
Sewage
Waste Disposal, Fluid
Fenitrothion
Toxicology
chemistry.chemical_compound
Metals, Heavy
Toxicity Tests
Animals
Bioassay
Organic Chemicals
Pesticides
Water Science and Technology
EC50
biology
business.industry
Temperature
Ceriodaphnia dubia
Pesticide
Cladocera
biology.organism_classification
chemistry
Environmental chemistry
Toxicity
business
Water Pollutants, Chemical
Subjects
Details
- ISSN :
- 19969732 and 02731223
- Volume :
- 53
- Database :
- OpenAIRE
- Journal :
- Water Science and Technology
- Accession number :
- edsair.doi.dedup.....2a80112d882068acf41d11ef12d8a70b