The invention relates to a device for examining the response and the reduction of environmental chemicals in a closed system, the apparatus comprising at least one substantially filled with soil container, the lysimeter, and above the floor surface disposed volatility chamber, said Volatitätskammer the volatile compounds from a defined bottom portion detected. Preferably, the device additionally comprises a vegetable chamber, detects the volatile compounds from a plant selected from the plant material. The test system according to the invention (lysimeter) enables the determination of the displacement, transport, washing, conversion (metabolism), the Minerialisierung and volatilization of chemicals under natural climatic conditions, both without the influence of plants as well as under the influence of plants in the lysimeter soil column and contained mineralization and volatilization of chemicals under natural climatic conditions of plant surfaces. The invention also relates to a method for testing of chemicals in soil using the device according to the invention.
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