||I U P A C
Organizations & People
and the Environment Division (VI)
Title: Use of reference soils for
testing fate and effects of chemicals
Bussian, Bernd Gawlik,
and Gerald Kuhnt
To generate and evaluate general principles for the selection of
reference soils used for testing fate and adverse ecological effects
Soils are complex matrices, whose structure and pro perties differ
considerably. Fate and adverse ecological effects of chemicals present
in soil are strongly influenced by soil properties. In principle
this requires that fate and effect testing is carried out with a
large range of soils, spanning a wide variety of soil properties.
In practice, however, this is not feasible and this is the reason
why soil testing should preferably be restricted to a limited set
of well-chosen reference soils that represent a realistic range
of soil properties. Laboratory test results obtained with this limited
set of reference soils may subsequently be extrapolated to field
The objective of this project is to generate and evaluate general
principles for the selection of reference soils. To achieve this
objective, the following work packages will be elaborated in the
Definition of the term "reference soil testing"
and delimitation from the terms "reference materials", "artificial
Requirements for the selection of reference soils
and their use in soil testing
Selection criteria with respect to different applications
of reference soils:
Elaboration and validation of analytical methods
for the determination of pollutant concentrations in soils.
- Application for the determination of the mobility of chemicals
in soils (e.g. adsorption/desorption, column experiments, etc.).
- Application for the determination of abiotic and biotic degradation
- Application for the determination of effects on soil flora
Ranking of the criteria according to their importance
for the different applications
Proposal of defined ranges of criteria/factors
for soil classification
Proposal of methods to elucidate the occurrence
of the selected soils in the field, and the frequency of occurrence
Characterization of the reference soils according
to current methods in soil science and soil quality.
The anticipated outcome of the project is a set of recommendations
on the use of reference soils in soil testing.
Last update: 2 September 2002
<project announcement to be published in Chem.
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Page last modified 21 December 2004.
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