Spatial interpolation of cadmium contamination of agricultural soils in Changhua county, Taiwan

Po Huang Chiang, George J. Musa, Dennis P.H. Hsieh, Der Ming Liou, Chi Pang Wen, Ta Chien Chan, Hsiao Hui Chen, Hsiao Lei Chen

Research output: Contribution to journalArticle

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Abstract

A robust spatial model to interpolate topsoil cadmium concentrations monitored by Taiwan EPA was constructed for assessment of health risks posed by this contamination in Changhua County, Taiwan. kriging methods, using a Geographic Information Systems (GIS), were used to estimate the range and severity of topsoil contamination. Optimised Kriging models and geostatistical analyses revealed that much of the farm topsoil in the catchment area was polluted above the levels established for human health. Cadmium hotspots (10-600 mg/kg) are identified in a highly populated region in the County.

Original languageEnglish
Pages (from-to)322-336
Number of pages15
JournalInternational Journal of Environment and Pollution
Volume40
Issue number4
DOIs
Publication statusPublished - Feb 1 2010
Externally publishedYes

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Keywords

  • Cadmium
  • Farm topsoil
  • Geographic information system
  • Kriging.
  • Spatial analysis

ASJC Scopus subject areas

  • Waste Management and Disposal
  • Pollution
  • Management, Monitoring, Policy and Law

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