The potential risk assessment for different arsenic species in the aquatic environment


Meng Du , Dongbin Wei , Zhuowei Tan , Aiwu Lin , Yuguo Du

DOI:10.1016/j.jes.2014.03.006

Received January 13, 2014,Revised March 21, 2014, Accepted , Available online January 19, 2015

Volume 27,2015,Pages 1-8

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 × 103 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.

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