Two-dimensional numerical and eco-toxicological modeling of chemical spills
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The effects of chemical spills on aquatic nontarget organisms were evaluated in this study. Based on a review of three types of current eco-toxicological models of chemicals, i.e., ACQUATOX model of the US-EPA, Hudson River Model of PCBs, and critical body residual (CBR) model and dynamic energy budget (DEBtox) model, this paper presents an uncoupled numerical ecotoxicological model. The transport and transformation of spilled chemicals were simulated by a chemical transport model (including flow and sediment transport), and the mortalities of an organism caused by the chemicals were simulated by the extended threshold damage model, separately. Due to extreme scarcity of data, this model was applied to two hypothetical cases of chemical spills happening upstream of a lake. Theoretical analysis and simulated results indicated that this model is capable of reasonably predicting the acute effects of chemical spills on aquatic ecosystems or organism killings.
Keywordschemical spills acute effects aquatic ecosystem eco-toxicological modeling
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- 1.Barnes R S K, Mann K H. Fundamentals of Aquatic Ecology. 2nd ed. Boston: Blackwell Scientific Publications, 1991Google Scholar
- 2.Rand G. M. Fundamentals of Aquatic Toxicology: Effects, Environmental Fate, and Risk Assessment. 2nd ed. Washington, DC: Taylor & Francis, 1995Google Scholar
- 5.Park R A, Clough J S. Aquatox (Release 2): Modeling Environmental Fate and Ecological Effects in Aquatic Ecosystems. Technical Documentation for Environmental Protection Agency. 2004Google Scholar
- 6.TAMS Consultants, Inc, Limno-Tech, Inc, Menzie-Cura & Associates, Inc, and Tetra Tech, Inc. Phase report-review copy: Further site characterization and analysis. Volume 2d-Revised baseline modeling report. Hudson River PCBs Reassessment RI/FS For U.S. Environmental Protection Agency Region 2 and U. S. Army Corps of Engineers Kansas City Distrcit. 2000Google Scholar
- 7.Kooijman S A L M. Parametric analysis of mortality rates in bioassays. Water Research, 1981, 15(1): 107–119Google Scholar
- 10.Kooijman S A L M. Dynamic Energy Budgets in Biological Systems: Theory and Applications in Ecotoxicology. Cambridge: Cambridge University Press, 1993Google Scholar
- 16.Mossman D J, Schnoor J L, Stumm W. Predicting the effects of a pesticide release to the Rhine River. Journal WPCF (Water Pollution Control Federation), 1988, 60(10): 1806–1812Google Scholar