Ion Mobility Spectrometry as a Field Screening Technique.
NIOSH 1991 Feb:137-152
A study was conducted to determine the power of the ion mobility spectrometry (IMS) system to detect high concentrations of acetic- acid (64197) vapors. IMS was characterized as a conceptually simple technique that relies on the drift time or time of flight of molecular or cluster ions through a host gas as a means of differentiation. A MMS-290 Ion Mobility Spectrometer and the Airborne Vapor Monitor (AVM) were used in these experiments. The AVM consisted of an IMS with a membrane inlet and internal electronics for signal processing and alarm. The hand held ion mobility spectrometer was able to differentiate between regulated concentrations of hazardous chemicals. This current work has been extended to identification of regulated concentrations for 15 other solvent chemicals. By extending the database, it is possible that AVM could be used as a field screening device and as a safety device for field personnel.
Analytical-chemistry; Chemical-analysis; Military-personnel; Soldiers; Air-quality-monitoring; Toxic-gases; Organic-compounds; Environmental-pollution;
Field Screening Methods for Hazardous Wastes and Toxic Chemicals. Second International Symposium, February 12-14, 1991. Sponsored by U.S. EPA; U.S. DOE; U.S. Army Toxic and Hazardous Materials Agency; U.S. Army Chemical Research Development and Engineering Center; U.S.A.F.; Florida State Univ.; National Environmental Technology Applications Corp.; and NIOSH