Developments in explosives vapor detection by glow discharge/ion trap MS
- Oak Ridge National Lab., TN (United States)
The quadrupole ion trap has found great utility in the analytical community due to its high sensitivity and MS{sup n} capabilities. Problems associated with matrix ions filling ion traps have been addressed by mass-selective ion accumulation methods. The atmospheric sampling glow discharge ionization (ASGDI) source coupled to a quadrupole ion trap used for explosives detection is prone to matrix ion effects because of its large abundance of background ions at low mass. By using a mass selective ion accumulation method such as a filtered-noise field (FNF), matrix ions are ejected allowing for the analyte ions to be concentrated in the trap. This paper will report on the detection limits found for explosives on the ASGDI/Finnigan ITMS using the FNF technology and on initial studies on the performance of the ASGDI/Teledyne 3DQ.
- OSTI ID:
- 210730
- Report Number(s):
- CONF-9505261--
- Country of Publication:
- United States
- Language:
- English
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