Fluxes in air

Figure 1 (cont'd). Mean flux of ERC from the test mines

Figure 2. Flux of ERC from PMA2 mines

TR-01-6
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7

f. VS-50.

Figure 1 (cont'd).

Table 2. Temperature dependence of mean ERC flux by

mine type fitted to F = aebt.

Est. flux (20C)

Slope

Intercept

ERC

Mine

mines by an order of magnitude. DNB is more vari-

measurements, which was not done in the original data

able. RDX flux from the VS-50 was small but compa-

collection.

rable to TNT flux from an AP mine of comparable size.

DNT is the most abundant analyte in the flux; it var-

As shown in Appendix A, relatively trace amounts of

ies greatly with mine type and size, with the larger plas-

DNT, DNB, and TNT were also detected in the flux

tic mines giving rise to larger fluxes. The relatively small

from the VS-50. The origin of these contaminants is

flux of DNT and DNB from the large metal TMM1

uncertain. The casings may have become contaminat-

compared to its size is undoubtedly attributable to the

ed by external vapors during storage (Bender et al. 1992,

impermeability of the metal casing. The slope was 0.06

Leggett et al. 2000), or the explosive charge may have

for the one type of RDX mine examined. DNT domi-

been contaminated with TNT.

nates TNT in the signature from plastic, TNT-filled

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