The course focuses on soil risk assessment (soil quality evaluation) and the basic knowledge necessary to be able to apply a risk assessment procedure to polluted soil sites. Basic knowledge comprises compound behaviour in soils (speciation, transport, uptake) and effects on soil organisms (bioavailability, uptake, dose-response relationships, risk assessment).
Objective:
After successful completion of this course participants should be able to:
recognize and describe the impact of soil pollution on the environment
Analyse and describe compound behaviour in soils
explain and describe essential elements of a soil quality evaluation procedure
apply a soil risk assessment to a contaminated soil site
response experiments including sampling, chemical analysis of soil and plant samples,
data processing, simple statistical data handling (linear regression) and report writing
Lectures
The lectures cover the following subjects:
The behaviour (especially speciation, transport and uptake) of contaminants in soil. Much attention will be paid to the various distribution processes (adsorption and desorption, dissolution and precipitation, volatilization and condensation) and transport in water and gas phase. This will be elaborated for compounds like heavy metals, volatile organic chemicals, cyanide, nitrogen and phosphate.
Effects of contaminants on organisms (plants and soil biota); particular attention will be paid to the determination of dose-response relationships and the concept of bioavailability.
Pollution phenomena like soil acidification, accumulation in soils, leaching of contaminants in soils, application of organic waste materials to soils, uptake of contaminants by plants and soil organisms, exposure to human beings, spreading of contaminants via groundwater.
Policy aspects: choice and determination of soil quality criteria (soil standards) as part of a soil quality evaluation procedure
Risk assessment procedure for soil and groundwater; analysis of exposure pathways. Analysis of actual risks for human beings, eco systems and groundwater spreading. - Applicability of various soil remediation techniques