On the performance of an on-line time-of-flight mass spectrometer for aerosols

An instrument has been developed to analyze the size and chemical composition of individual, air-borne particles. The particles are introduced into the vacuum chamber of a time-off-light mass spectrometer where they are detected and sized using an aerodynamic principle. After sizing, the particles a...

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Veröffentlicht in:	Journal of aerosol science 1997, Vol.28 (1), p.159-171
Hauptverfasser:	Weiss, M., Verheijen, P.J.T., Marijnissen, J.C.M., Scarlett, B.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aerosols Chemistry Colloidal state and disperse state Exact sciences and technology General and physical chemistry
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	An instrument has been developed to analyze the size and chemical composition of individual, air-borne particles. The particles are introduced into the vacuum chamber of a time-off-light mass spectrometer where they are detected and sized using an aerodynamic principle. After sizing, the particles are vaporized by an excimer laser and the resulting ions are analyzed. Experiments have shown that polystyrene particles 1 μm in diameter are not fully vaporized by the laser pulse. The instrument has been characterized and some examples of measurements on ambient and artificial aerosols are presented.
ISSN:	0021-8502 1879-1964
DOI:	10.1016/S0021-8502(96)00067-5