STUDY OF TNT METABOLISM IN PLANTS AND ITS PRACTICAL APPLICATION FOR ENVIRONMENT DECONTAMINATION

摘要

Although a contamination of sites by TNT is an environmental problem all over the world, the fate of its degradation products claims attention as well. A study of metabolism of TNT in plants was focused on degradation of 4-amino-2,6-dinitrotoluene (4-ADNT), a stable degradation product. Two plant species Senecio jacobea and Buphthalmum salicifolium cultivated under in vitro conditions in the presence of different concentration of 4-ADNT for 3 weeks. The highest concentration 50 mg/l of 4-ADNT was degraded by plants within two weeks but any major degradation product was not detected in the medium. The IC_(50) was not determined in the range of used concentration therefore a linear regression was used for prediction of the IC_(50) and 61,8 mg/l and 70,2 mg/l were calculated for S. jacobea and B. salicifolium, respectively.