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영어

We investigated a fullerene-soot as a volatile-gas-absorber. Commercial gas- absorbers are expensive and some of them require a special instrument to desorber gas from absorbers. Also, none of them is useful to collect volatile-gases directly in the arson case. This study showed that fullerene-soot is somewhat better ignitable liquids adsorbent than carbon-strip (commonly used a commercial absorber). Toluene, hexane, undecane, gasoline, kerosene and diesel are used as test ignitable liquids. Fullerene-soot is a kind of charcoal material which has more than 7% fullerenes. Under our experiment condition with one compound, fullerene-soot gave at least 8 times higher intensity than charcoal-strip. Fullerene-soot was put in the prototype column for easy-handling. We collect ignitable liquid residues with a air-pump then fullerene-soot was heated and the headspace vapor was analysed by GC-FID. The results showed enough intense signals to verify materials without using any organic solvents to elute fullerene-soot. We think that fullrene-soot could be one of candidates to replace charcaol-strip and further modification makes a fullerene-soot column to apply in real arson case.