Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
|
Outline of Final Research Achievements |
A method for determining volatile chemical warfare agents (CWAs) in air by thermal desorption-gas chromatography/mass spectrometry (TD-GC/MS) was developed. The breakthrough values were more than 44 (sarin) L/g Tenax TA resin at 20 ℃. Logarithm of breakthrough volume values for nerve gases showed nearly linear correlation plot with their boiling points. Adsorbent tubes were purged with either dry or 50% relative humidity air at 100 mL/min for 5 min, and stored at room temperature or 4 ℃. Nerve gases and mustard gas were recovered in >80% from the tubes up to 2 weeks. In contrast, VX and RVX recoveries drastically reduced with storage time, resulting in 10-30% at room temperature after 2 weeks. A method for collecting and desorbing CWAs by using NeedlEx was also investigated. Each CWA trapped into NeedlEx was constantly recovered (16-60%). All the CWAs were recovered in more than 80% from NeedlEx at 4 ℃ after 1 week.
|