Oral Sessions (Day1, Day2, Day3)
Poster Presentations (Day1, Day2, Day3)
Poster Presentations
- Day 1, June 22（Wed.） Room P (501, 502 and 503)
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1P-10 PDF
Development of Walk-through Type Explosive Trace Detector Combined with Ion Mobility Spectrometer
We previously developed a walk-through type explosive trace detector (WT-ETD) using mass spectrometer (MS) as a sensor. The performance, especially throughput, of WT-ETD using MS has been highly evaluated in security market. However, due to high price, organizations and companies which afford to use WT-ETD using MS have been limited. In the present study, in order to reduce the cost of our system, we developed an ion mobility spectrometer (IMS) and used it for a sensor of WT-ETD as an alternative to MS. Silica particles coated with explosive molecules were used as evaluation sample. Experimental results showed that within a few seconds after an introduction of the silica particles into WT-ETD using IMS, specific peaks for each explosive molecules were detected in IMS spectra. The detection limit was sub microgram, which was similar to that of the WT-ETD using MS. On the other hand, the resolution of the WT-ETD using IMS was around 25, which was much lower than that of the WT-ETD using MS. Low resolution probably results in high false positive ratio. Further study will be needed to confirm if the current resolution of the WT-ETD using IMS is sufficient for field operation.