Geostatistical analysis and kriging of Hexachlorocyclohexane residues in topsoil from Tianjin, China

  • Li B
  • Cao J
  • Liu W
 et al. 
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Abstract

A previously published data set of HCH isomer concentrations in topsoil samples from Tianjin, China, was subjected to geospatial analysis. Semivariograms were calculated and modeled using geostatistical techniques. Parameters of semivariogram models were analyzed and compared for four HCH isomers. Two-dimensional ordinary block kriging was applied to HCH isomers data set for mapping purposes. Dot maps and gray-scaled raster maps of HCH concentrations were presented based on kriging results. The appropriateness of the kriging procedure for mapping purposes was evaluated based on the kriging errors and kriging variances. It was found that ordinary block kriging can be applied to interpolate HCH concentrations in Tianjin topsoil with acceptable accuracy for mapping purposes. © 2005 Elsevier Ltd. All rights reserved.

Author-supplied keywords

  • Geostatistical analysis
  • Hexachlorocyclohexanes (HCHs)
  • Kriging
  • Tianjin topsoil

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