Single-Particle Fluorescence Spectrometer for Ambient Aerosols
نویسندگان
چکیده
Yong-Le Pan,1 Justin Hartings,2 Ronald G. Pinnick,3 Steven C. Hill,3 Justin Halverson,4 and Richard K. Chang1 1Department of Applied Physics and Center for Laser Diagnostics, Yale University, New Haven, Connecticut 2U.S. Army Medical Research Institute for Infectious Diseases, Ft. Detrick, Maryland 3U.S. Army Research Laboratory, Adelphi, Maryland 4Westinghouse Savannah River Company, Aiken, South Carolina
منابع مشابه
Real-Time Determination of Absorptivity of Ambient Particles in Urban Aerosol in Budapest, Hungary
The absorption properties of ambient urban aerosols as well as their size distributions were measured in real-time using a dual wavelength optical particle spectrometer (DWOPS). A photoacoustic spectrometer (PAS) was simultaneously used to directly measure light absorptivity of the particles in question along with an Aethalometer and a commercial optical particle counter (OPC). The sizing perfo...
متن کاملSimultaneous light scattering and intrinsic fluorescence measurement for the classification of airborne particles.
We describe a prototype laboratory light-scattering instrument that integrates two approaches to airborne particle characterization: spatial light-scattering analysis and intrinsic fluorescence measurement, with the aim of providing an effective means of classifying biological particles within an ambient aerosol. The system uses a single continuous-wave 266-nm ultraviolet laser to generate both...
متن کاملChemical and microphysical characterization of ambient aerosols with the aerodyne aerosol mass spectrometer.
The application of mass spectrometric techniques to the real-time measurement and characterization of aerosols represents a significant advance in the field of atmospheric science. This review focuses on the aerosol mass spectrometer (AMS), an instrument designed and developed at Aerodyne Research, Inc. (ARI) that is the most widely used thermal vaporization AMS. The AMS uses aerodynamic lens i...
متن کاملMeasurements of isoprene-derived organosulfates in ambient aerosols by aerosol time-of-flight mass spectrometry - part 1: single particle atmospheric observations in Atlanta.
Organosulfate species have recently been identified as a potentially significant class of secondary organic aerosol (SOA) species, yet little is known about their behavior in the atmosphere. In this work, organosulfates were observed in individual ambient aerosols using single particle mass spectrometry in Atlanta, GA during the 2002 Aerosol Nucleation and Characterization Experiment (ANARChE) ...
متن کاملComprehensive Measurement of Atmospheric Aerosols with a Wide Range Aerosol Spectrometer
A wide range aerosol spectrometer (WRAS) was used for comprehensive long term measurements of aerosol size distributions. The system combines the results of an optical aerosol spectrometer with the results of a Scanning Mobility Particle Sizer (SMPS) to record essentially the full size range (5 nm – 32 μm) of atmospheric particles in 72 channels. Measurements were carried out over one year (200...
متن کامل