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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39710

Title: Probabilistic risk assessment of abalone Haliotis diversicolor suprtexta exposed to waterborne zinc
Authors: Chung-Min Liao
Min-Pei Ling
Contributors: 國立臺灣海洋大學:食品科學系
Keywords: Zinc
Risk assessment
Date: 2004-01
Issue Date: 2016-12-28T08:32:56Z
Publisher: Environmental Pollution
Abstract: Abstract: This paper describes a risk assessment approach that integrates predicted tissue concentrations of zinc (Zn) with a concentration–response relationship and leads to predictions of survival risk for pond abalone Haliotis diversicolor supertexta as well as to the uncertainties associated with these predictions. The models implemented include a probabilistic bioaccumulation model, which linking biokinetic and consumer-resource models, accounts for Zn exposure profile and a modified Hill model for reconstructing a dose–response profile for abalone exposed to waterborne Zn. The growth risk is assessed by hazard quotients characterized by measured water level and chronic no-observed effect concentration. Our risk analyses for H. diversicolor supertexta reared near Toucheng, Kouhu, and Anping, respectively, in north, central, and south Taiwan region indicate a relatively low likelihood that survival is being affected by waterborne Zn. Expected risks of mortality for abalone were estimated as 0.46 (Toucheng), 0.36 (Kouhu), and 0.29 (Anping). The predicted 90th-percentiles of hazard quotient for potential growth risk were estimated as 1.94 (Toucheng), 0.47 (Kouhu), and 0.51 (Anping). These findings indicate that waterborne Zn exposure poses no significant risk to pond abalone in Kouhu and Anping, yet a relative high growth risk in Toucheng is alarming. Because of a scarcity of toxicity and exposure data, the probabilistic risk assessment was based on very conservative assumptions.
Relation: 127(2)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39710
Appears in Collections:[食品科學系] 期刊論文

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