Uptake of nitroaromatic compounds in plants |
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Authors: | Klaus Schneider Jan Oltmanns Thomas Radenberg Thomas Schneider Dagmar Pauly-Mundegar |
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Institution: | 1. Forschungs-und Beratungsinstitut Gefahrstoffe GmbH (FoBiG), Werderring 16, D-79098, Freiburg, Germany 2. Abfallentsorgungs- und Altlastensanierungsverband Nordrhein-Westfalen, Werkstra?e 15, D-45527, Hattingen, Germany 3. Umweltamt - Chemisches Untersuchungsinstitut Leverkusen, Düsseldorferstra?e 153, D-51379, Leverkusen, Germany
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Abstract: | The uptake of nitroaromatic compounds by plants from the soil was studied at an ammunition site. After the development of analytical methods for 2,4,6-trinitrotoluene, aminodinitrotoluenes and dinitrotoluenes in plant material, we could show that these substances accumulated in the roots of plants and are found to a lesser extent inleaves and stems. We observed only moderate differences between various plant species. It is likely that a metabolic transformation in plants leads to the formation of dinitrotoluenes which are considered to be potent carcinogens. Results from soils with a wide range of explosive concentrations show a good correlation between the plant and soil concentrations. The relative accumulation in plant material is higher at lower soil concentrations. At low soil concentrations of about 1 mg trinitrotoluene/kg soil, an accumulation factor of about 0.5 can be derived. These data are an important input for the risk assessment of ammunition sites. |
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