Abstract
ABSTRACT Trinitrotoluene (TNT) explosives contain small amounts of diniirotoluene (DNT). DNT exhibit a higher vapor pressure thanTNT which indicates higher concentration of DNT than of TNT in the vapor phase of the explosive. Analysis of soilsamples reveal extended information compared to air samples and thereby increases the probability for chemical detection.Detected substances in soil samples are TNT and related compounds. Therefore, sampling of DNT in vapor phase near theground or soil solid phase may be an efficient approach to detect buried land mines or unexploded ordnance (UXO)containing TNT. Charges of TNT has been placed both in desiccators and in a set of different types of soil in the laboratory.Analysis of air samples repeatedly taken in desiccators during a period of 299 days shows a perpetually higher concentrationof DNT than of TNT. TNT was also placed in outdoor test beds where the presence of DNT in vapor phase near to theground were confirmed, as well as TNT and related compounds in soil samples. In mine affected areas, air sampling near tothe ground over buried mines and soil sampling near the same mines were performed.Keywords: TNT, DNT, vapour phase, soil solid phase, land mine, mine detection
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