The invention relates to a device for investigating the behaviour and the degradation of environmental chemicals in a dynamic system. Said device comprises at least one container, which is filled with a disturbed or undisturbed soil; a rain device which is arranged above the soil surface, a ventilator device which produces an even wind motion above the soil surface, and a vacuum system for regulating a predetermined groundwater table inside the soil. The inventive laboratory testing system ("microcosm arrangement") makes it possible to determine the transport, transformation, mineralisation and volatilisation of chemicals in natural climate conditions without the influence of plants and under the influence of plants in disturbed and undisturbed plate columns. The invention also relates to a method for testing chemicals in soils using the inventive device.
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