Pollutant trends and hazard ranking in the desalination area of the Penghu Islands, Taiwan

Yung Chang Lin, Cheng Haw Lee, Kuo Hsin Yang, Ming Hsun Lin, Ku Fan Chen, Chien Pang Pan

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

This work examines the distributions of potentially toxic trace elements (e.g., Cu, Zn and As) and assesses the potential hazards of contaminants to environment. Trace elements are released from seawater desalination facility in the Penghu Islands, Taiwan. Temporal trends of trace element concentrations are investigated by comparing biannual concentrations for a 2-year period (2006-2007). Analytical results demonstrate that only As in seawater had an increasing trend after 2006. Further, a hazard index (HI) is applied to assess the potential hazard of contaminants to the environment. The HI (HI=C95%/Callowable) is defined as the ratio of the 95th percentile for a pollutant concentration (C95%) to an allowable concentration for each pollutant (Callowable). The hazard index is used to establish a pollutant priority ranking and, then, serves as a useful screening tool for developing strategies for desalination pollution control. In this study, if the priority is to improve water quality, focus should be placed on Cu (HI=0.32). On the other hand, if the priority is sediment quality, the As concentration (HI=0.51) should be reduced. If the two HIs (seawater and sediment) are considered together, As (HI=0.56) becomes the highest-ranking trace element, followed by Zn (HI=0.54).

原文English
頁(從 - 到)159-164
頁數6
期刊Desalination
281
發行號1
DOIs
出版狀態Published - 2011 十月 17

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)
  • Water Science and Technology
  • Mechanical Engineering

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