Tandem mass spectrometry of airborne particles
- Oak Ridge National Lab., TN (United States)
Most manufacturing or processing activity produces solid emissions in the form of particulates. Low vapor pressure liquids condensed on ambient particulate matter is indicative of the materials and processes being used. Laser Desorption mass spectrometry of single microparticles in an ion trap provides a capability to analyze the airborne particles as well as condensed phase materials on a microparticle surface without any instrument manipulation. On-line, single particle analysis allows detection of microscopic variations in sample compositions in real time. In this experiment, a quadrupole ion trap mass spectrometer coupled with a particle injection system is demonstrated for laser desorption mass spectrometry and MS/MS analysis of single microparticles. The device can be used for detection of controlled substances and investigation of harmful airborne particles such as pollens, fibers, microorganisms, etc. Chemical analysis of individual microparticles using laser desorption mass spectrometry in this ion trap system has been described elsewhere.
- OSTI ID:
- 210566
- Report Number(s):
- CONF-9505261--
- Country of Publication:
- United States
- Language:
- English
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