Occurrence of arsenic in ground water in the Choushui River alluvial fan, Taiwan

Chen Wuing Liu, Sheng Wei Wang, Cheng Shin Jang, Kao Hong Lin

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

An investigation of shallow ground water quality revealed that high arsenic (As) concentrations were found in both aquifers and aqnitards in the southern Chonshui River alluvial fan of Taiwan. A total of 655 geological core samples from 13 drilling wells were collected and analyzed. High As contents were found primarily in aquitards, to a maximum of 590 mg/kg. The contents were correlated with the locations of the marine sequences. Additionally, strong correlations among the As concentrations of core samples, the clay, and the geological age of the Holocene transgression were identified. Most of the As in ground water originated from the aquitard of the marine sequence. The high As content in marine formations with high clay contents may be attributable to the bioaccumulation of As in the sea organisms, which accrued and were deposited in the formation. A preliminary geogenic model of the origin of the high As concentration in the shallow sedimentary basin of the Chonshui River alluvial fan of Taiwan is proposed.

Original languageEnglish
Pages (from-to)68-75
Number of pages8
JournalJournal of Environmental Quality
Volume35
Issue number1
DOIs
Publication statusPublished - 2006 Jan 1

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution
  • Management, Monitoring, Policy and Law

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