Detection of Chemical Warfare Agents on Surfaces Relevant to Homeland Security by Direct Analysis in Real-Time Spectrometry

摘要

Analysis of low-volatility, condensed-phase chemicals on surfaces has been an extremely difficult and long-standing objective in environmental monitoring. When target analytes possess pico-torr vapor pressures, the problem of monitoring becomes formidable As such, any noncontact sampling at atmospheric pressure that does not require solvents or wipes would be a technological breakthrough.. In addition, the absence of sample preparation would allow extremely rapid analysis in time-critical situations. Today, such a technology is now available. It is known as Direct Analysis in Real Time1 or DART? (JEOL USA, Inc., Peabody, MA).