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A simple calculation method for the estimation of accumulation and maximum permissible loads of heavy metals and organic compounds in soil (SOACAS)

Een eenvoudige rekenmethode voor de schatting van bodemaccumulatie en maximaal toelaatbare bodembelasting van zware metalen en organische stoffen (SOACAS)

Synopsis

This report describes a simple model for the calculation of accumulation of chemical substances in soils, SOACAS (Soil Accumulation Assessment). The model is based on a simple and specific analytical solution for the accumulation of chemicals in one completely mixed soil compartment. The model accounts for the distribution of chemicals between the gaseous, liquid and solid phase, as well as for plant uptake, volatilization, degradation and leaching. The method is applied for cadmium, chromium, copper, mercury, lead, zinc and benzo(a)pyreen for a number of combinations of soil type and land use. In view of the simplicity of the model it is not suitable for analysis of local soil pollution problems. It's prime goal of application is support of national and regional environmental policy. The model can easily be incorporated into a GIS environment. In this report an example is given in which the model is used to estimate the maximum permissible soil load, based on the present soil pollution status and the given standard for soil quality.
 

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