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  • 1 Paul Scherrer Institut CH-5232 Villigen (Switzerland)
  • 2 ETH-Zentrum Labor für Bodenkunde CH-8092 Zürich (Switzerland)
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Forest Swiss soils from 39 locations sampled ad three depths each were extracted with a buffered solution of pH 4.65 containing EDTA. Nearly 30 elements were determined by instrumental neutron activation analysis in these extracts. The results obtained are discussed in terms of efficiency of the extractant, precision and accuracy. Summariszed results are presented for the quantities fractions of the elements extracted.