Microbial Toxicity of Nitroaromatic Compounds

FIGURE 3.1 Schematic toxicological impacts of TNT on the soil microbial community. 

1 Effects of Nitroaromatic Compounds on the Soil Microbial Community 

The majority of ecotoxicological data for individual strains of soil microorganisms was derived from studies with amended growth media or soil slurries therefore, these data cannot be used directly to infer the exposure effects in aerobic soil because the 

Nitrate Nitrite Nitric oxide Nitrous oxide 

FIGURE 3.2 The toxicity of TNT to the nitrogen and carbon soil biogeochemical cycles. Values are concentrations of TNT shown to inhibit the specified process by 50%. (For nitrification, the entire nitrification process is indicated but the assay only measures the production of nitrite and not nitrate.) 

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