To investigate the suitability of the kriging interpolation technique in the mapping of local soil pollution, we have conducted a pilot study based on data concerning the pollution of the premises of the former gas works in the municipality of Amersfoort (province of Utrecht). Of the types of pollutants found there, cyanide and PAH were singled out for special attention.It appears that cyanide pollution is readily described by models obtained with the aid of kriging. This does not happen to be the case for PAH pollution, but there are several explanations why it is not. Although interpolation of observations is a commonly used method, it is usually carried out in a subjective and unsystematic manner. The present study is the first to afford a systematic insight into the spatial distribution of local soil pollution, which has been mapped with the aid of drilling and analysis of cores. Application of the kriging technique has provided an insight into the accuracy of interpolated concentrations.The present study is the first to provide numerical proof that the separation into different waste streams of polluted soil according to degree of pollution, frequently practised in clean-up of soils, is not justified.
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- Kriging Interpolation as a Sampling Strategy in Local Soil Pollution
F. P. J. Lamé
P. R. Defize
F. C. van Geer
- Springer Netherlands
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