Characterizing hydrochemical properties of springs in Taiwan based on their geological origins

Cheng Shin Jang, Jui Sheng Chen, Yun Bin Lin, Chen Wuing Liu

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

This study was performed to characterize hydrochemical properties of springs based on their geological origins in Taiwan. Stepwise discriminant analysis (DA) was used to establish a linear classification model of springs using hydrochemical parameters. Two hydrochemical datasets-ion concentrations and relative proportions of equivalents per liter of major ions-were included to perform prediction of the geological origins of springs. Analyzed results reveal that DA using relative proportions of equivalents per liter of major ions yields a 95.6% right assignation, which is superior to DA using ion concentrations. This result indicates that relative proportions of equivalents of major hydrochemical parameters in spring water are more highly associated with the geological origins than ion concentrations do. Low percentages of Na + equivalents are common properties of springs emerging from acid-sulfate and neutral-sulfate igneous rock. Springs emerging from metamorphic rock show low percentages of Cl - equivalents and high percentages of HCO 3 - equivalents, and springs emerging from sedimentary rock exhibit high Cl -/SO 4 2- ratios.

Original languageEnglish
Pages (from-to)63-75
Number of pages13
JournalEnvironmental Monitoring and Assessment
Volume184
Issue number1
DOIs
StatePublished - Jan 2012

Keywords

  • Discriminant analysis
  • Igneous rock
  • Metamorphic rock
  • Sedimentary rock
  • Spring
  • Taiwan

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