Ultrafine nitrate particle events in Baltimore observed by real-time single particle mass spectrometry

2004 ◽  
Vol 38 (20) ◽  
pp. 3215-3223 ◽  
Author(s):  
Michael P. Tolocka ◽  
Derek A. Lake ◽  
Murray V. Johnston ◽  
Anthony S. Wexler
Keyword(s):  
Mass Spectrometry ◽  
Real Time ◽  
Single Particle ◽  
Particle Mass ◽  
Single Particle Mass Spectrometry

scholarly journals Characterization of Short-Term Particulate Matter Events by Real-Time Single Particle Mass Spectrometry

2006 ◽  
Vol 40 (10) ◽  
pp. 873-882 ◽  
Author(s):  
Michael P. Tolocka ◽  
Melissa S. Reinard ◽  
Derek A. Lake ◽  
John M. Ondov ◽  
Anthony S. Wexler ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Particulate Matter ◽  
Real Time ◽  
Single Particle ◽  
Particle Mass ◽  
Short Term ◽  
Single Particle Mass Spectrometry

Source characterization and identification by real-time single particle mass spectrometry

2007 ◽  
Vol 41 (40) ◽  
pp. 9397-9409 ◽  
Author(s):  
Melissa S. Reinard ◽  
Kouame Adou ◽  
Joseph M. Martini ◽  
Murray V. Johnston
Keyword(s):  
Mass Spectrometry ◽  
Real Time ◽  
Single Particle ◽  
Particle Mass ◽  
Source Characterization ◽  
Single Particle Mass Spectrometry

Characterization of vertical aerosol flows by single particle mass spectrometry for micrometeorological analysis

2011 ◽  
Vol 102 (1-2) ◽  
pp. 49-56 ◽  
Author(s):  
Elmar Gelhausen ◽  
Klaus-Peter Hinz ◽  
Andres Schmidt ◽  
Bernhard Spengler
Keyword(s):  
Mass Spectrometry ◽  
Single Particle ◽  
Particle Mass ◽  
Single Particle Mass Spectrometry

scholarly journals Resonance-Enhanced Detection of Metals in Aerosols using Single Particle Mass Spectrometry

2020 ◽  
Author(s):  
Johannes Passig ◽  
Julian Schade ◽  
Ellen Iva Rosewig ◽  
Robert Irsig ◽  
Thomas Kröger-Badge ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Excimer Laser ◽  
Single Particle ◽  
Aerosol Particles ◽  
Ambient Air ◽  
Particle Mass ◽  
Anthropogenic Aerosols ◽  
Single Particle Mass Spectrometry ◽  
Krf Excimer Laser ◽  
The Impact

Abstract. We describe resonance effects in laser desorption/ionization (LDI) of particles that substantially increase the sensitivity and selectivity to metals in single particle mass spectrometry (SPMS). Within the proposed scenario, resonant light absorption by ablated metal atoms increases their ionization rate within a single laser pulse. By choosing the appropriate laser wavelength, the key micronutrients Fe, Zn and Mn can be detected on individual aerosol particles with considerably improved efficiency. These ionization enhancements for metals apply to natural dust and anthropogenic aerosols, both important sources of bioavailable metals to marine environments. Transferring the results into applications, we show that the spectrum of our KrF-excimer laser is in resonance with a major absorption line of iron atoms. To estimate the impact of resonant LDI on the metal detection efficiency in SPMS applications, we performed a field experiment on ambient air with two alternately firing excimer lasers of different wavelengths. Herein, resonant LDI with the KrF-excimer laser (248.3 nm) revealed Fe signatures for many more aerosol particles compared to the more common ArF-excimer laser line of 193.3 nm. Moreover, resonant ionization of iron appeared to be less dependent on the particle matrix than conventional non-resonant LDI, allowing a more universal and secure detection of Fe. Our findings show a way to improve the detection and source attribution capabilities of SPMS for particle-bound metals, a health-relevant aerosol component and an important source of micronutrients to the surface oceans affecting marine primary productivity.

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