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	Acute Ecological Risk Assessment in Water Pollution Accidents
	Ma, Jinfeng; Chen, Qiuwen; Ye, Fei; Xu, Yiping
	2013
会议名称	35th World Congress of the International-Association-for-Hydro-Environment-Engineering-and-Research (IAHR)
会议日期	SEP 08-13, 2013
会议地点	Chengdu, PEOPLES R CHINA
关键词	Acute Ecological risk assessment Contaminant fate model Water pollutionaccidents Ecotoxicology
英文摘要	Water pollution accidents has become a continuous concern due to its adverse effects on aquatic ecosystems, which are generally characterized by short term-high level exposures and particularly, dynamical fluctuations of exposure concentrations. Consequently, an efficient, quantitative approach to aquatic ecosystem risk assessment (ERA) remains a longstanding challenge in water pollution accidents. Although toxicity exposure ratio (TER) methodology overwhelming in ERA studies, predicted environmental concentration (PEC) determination still adopted the maximum concentration in receiving water, without taking into consideration of dynamical fluctuations of concentration and leading to a underestimation of potential risks. This studypresented a PEC determination method based on the pollutant transport modeling to reflect effect of the temporal and spatial variability of concentration field on ecological risk. The pollutant transport model employs SELFE and WASP to compute the spatial-temporal distributions of pollutant. Basing on the pollutant concentration field, the presented PEC determination method is employed tocharacterizethe ecotoxicological effects on ecosystem. The method is validated by the data collected from an accidental spill of nitrobenzene happened in November 2005 in the Songhua River, China.
内容类型	会议论文
源URL	[http://ir.rcees.ac.cn/handle/311016/24584]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Ma, Jinfeng,Chen, Qiuwen,Ye, Fei,et al. Acute Ecological Risk Assessment in Water Pollution Accidents[C]. 见:35th World Congress of the International-Association-for-Hydro-Environment-Engineering-and-Research (IAHR). Chengdu, PEOPLES R CHINA. SEP 08-13, 2013.

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