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Your search keyword '"Philip Croteau"' showing total 3 results
Start Over Author "Philip Croteau" Journal aerosol science and technology
3 results on '"Philip Croteau"'

1. Quantifying and improving the optical performance of the laser ablation aerosol particle time of flight mass spectrometer (LAAPToF) instrument

Author

Daniel J. Cziczo, Maria A. Zawadowicz, Sara Lance, Thomas Leisner, Philip Croteau, Douglas R. Worsnop, John T. Jayne, and Fabian Mahrt

Subjects
Materials science, Laser ablation, 010504 meteorology & atmospheric sciences, Spectrometer, Field (physics), business.industry, 010501 environmental sciences, Mass spectrometry, 01 natural sciences, Pollution, Aerosol, Characterization (materials science), Time of flight, Optics, Environmental Chemistry, Particle, General Materials Science, business, 0105 earth and related environmental sciences
Abstract

Single particle mass spectrometer (SPMS) instruments have been used for in-situ chemical characterization of atmospheric aerosols, both in the field and laboratory, for over two decades. SPMSs typi...

Published
2020
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2. Development of an aerosol mass spectrometer lens system for PM2.5

Author

Wen Xu, Lino A. Gonzalez, Richard C. Miake-Lye, Philip Croteau, John T. Jayne, Kenneth A. Smith, Douglas R. Worsnop, Jay Peck, Michael T. Timko, and Leah R. Williams

Subjects
010504 meteorology & atmospheric sciences, business.industry, Chemistry, 02 engineering and technology, Particulates, 021001 nanoscience & nanotechnology, Mass spectrometry, 01 natural sciences, Pollution, law.invention, Aerosol, Lens (optics), Optics, Transmission (telecommunications), law, Environmental Chemistry, General Materials Science, 0210 nano-technology, business, 0105 earth and related environmental sciences
Abstract

The aerodynamic lens system of the Aerodyne Aerosol Mass Spectrometer (AMS) was analyzed using the Aerodynamic Lens Calculator. Using this tool, key loss mechanisms were identified, and a new lens design that can extend the transmission of particulate matter up to 2.5 μm in diameter (PM2.5) was proposed. The new lens was fabricated and experimentally characterized. Test results indicate that this modification to the AMS lens can significantly improve the transmission of large sized particles, successfully achieving a high transmission efficiency up to PM2.5 range.© 2016 American Association for Aerosol Research

Published
2016
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3. An Aerosol Chemical Speciation Monitor (ACSM) for Routine Monitoring of the Composition and Mass Concentrations of Ambient Aerosol

Author

J. T. Jayne, Philip Croteau, Qi Zhang, Manjula R. Canagaratna, Yele Sun, Donna Sueper, Timothy B. Onasch, D. R. Worsnop, A. Trimborn, Scott C. Herndon, and Nga L. Ng

Subjects
Detection limit, Chemistry, Analytical chemistry, Particulates, Mass spectrometry, Pollution, Aerosol, chemistry.chemical_compound, Vaporization, Environmental Chemistry, Particle, General Materials Science, Sulfate, Chemical composition
Abstract

We present a new instrument, the Aerosol Chemical Speciation Monitor (ACSM), which routinely characterizes and monitors the mass and chemical composition of non-refractory submicron particulate matter in real time. Under ambient conditions, mass concentrations of particulate organics, sulfate, nitrate, ammonium, and chloride are obtained with a detection limit

Published
2011
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