title: The potential risk assessment for different arsenic species in the aquatic environment.
abstract: The different toxicity characteristics of arsenic species result in discrepant ecological risk. The predicted no-effect concentrations (PNECs) 43.65, 250.18, and 2.00×10(3)μg/L were calculated for As(III), As(V), and dimethylarsinic acid in aqueous phase, respectively. With these PNECs, the ecological risk from arsenic species in Pearl River Delta in China and Kwabrafo stream in Ghana was evaluated. It was found that the risk from As(III) and As(V) in the samples from Pearl River Delta was low, while much high in Kwabrafo stream. This study implies that ecological risk of arsenic should be evaluated basing on its species.
authors.affiliation: State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China E-mail: meng820701@163.com; Water Quality Monitoring Center of Beijing Waterworks Group Company Limited, Beijing 100192, China. Electronic address: meng820701@163.com.
authors.forename: Meng
authors.initials: M
authors.lastname: Du
authors.affiliation: State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China E-mail: meng820701@163.com. Electronic address: weidb@rcees.ac.cn.
authors.forename: Dongbin
authors.initials: D
authors.lastname: Wei
authors.affiliation: State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China E-mail: meng820701@163.com.
authors.forename: Zhuowei
authors.initials: Z
authors.lastname: Tan
authors.affiliation: Water Quality Monitoring Center of Beijing Waterworks Group Company Limited, Beijing 100192, China.
authors.forename: Aiwu
authors.initials: A
authors.lastname: Lin
authors.affiliation: State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China E-mail: meng820701@163.com.
authors.forename: Yuguo
authors.initials: Y
authors.lastname: Du
mesh_terms: D059001:Aquatic Organisms; D001151:Arsenic / Q000032:analysis / Q000633:toxicity*; D002681:China; D002853:Chromatography, Liquid; D004305:Dose-Response Relationship, Drug; D004781:Environmental Exposure; D004784:Environmental Monitoring; D005869:Ghana; D008954:Models, Biological; D018570:Risk Assessment; D045483:Rivers; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000633:toxicity*
chemical_list: D014874:Water Pollutants, Chemical; D001151:Arsenic
keywords: Arsenic; Ecological risk assessment; Predicted no-effect concentration; Species