Abstract
Simplified laboratory and field screening tests for 2,4,6-trinitrotoluene (TNT) in soil are described along with data supporting their validity. For field screening, an amount of soil (6 g) is vigorously shaken with 35 ml of methanol. Addition of 2 drops of 10% aqueous sodium hydroxide to 3 ml of the decantate results in a pink to purple color, the absorbance at 516 nm is directly proportional to the concentration of the TNT in the soil. The detection limit is estimated to be in the range of 4–8 ppm. The results of these screening tests correlate well with LC results.
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