Design and Operation of a Pressure-Controlled Inlet for Airborne Sampling with an Aerodynamic Aerosol Lens
Open Access
- 24 April 2008
- journal article
- research article
- Published by Taylor & Francis in Aerosol Science and Technology
- Vol. 42 (6) , 465-471
- https://doi.org/10.1080/02786820802178514
Abstract
Two pressure-controlled inlets (PCI) have been designed and integrated into the Aerodyne Aerosol Mass Spectrometer (AMS) inlet system containing an aerodynamic aerosol lens system for use in airborne measurements. Laboratory experiments show that size calibration and mass flow rate into the AMS are not affected by changes in upstream pressure (P 0 ) of the PCI as long as the pressure within the PCI chamber (P PCI ) is controlled to values lower than P 0 . Numerous experiments were conducted at different P PCI , P 0 , and AMS lens pressures (P Lens ) to determine particle transmission efficiency into the AMS. Based on the results, optimum operating conditions were selected which allow for constant pressure sampling with close to 100% transmission efficiency of particles in the size range of ∼ 100–700 nm vacuum aerodynamic diameter (d va ) at altitudes up to ∼ 6.5 km. Data from an airborne field study are presented for illustration.Keywords
This publication has 20 references indexed in Scilit:
- Field-Deployable, High-Resolution, Time-of-Flight Aerosol Mass SpectrometerAnalytical Chemistry, 2006
- Design, Modeling, Optimization, and Experimental Tests of a Particle Beam Width Probe for the Aerodyne Aerosol Mass SpectrometerAerosol Science and Technology, 2005
- A New Time-of-Flight Aerosol Mass Spectrometer (TOF-AMS)—Instrument Description and First Field DeploymentAerosol Science and Technology, 2005
- Particle Morphology and Density Characterization by Combined Mobility and Aerodynamic Diameter Measurements. Part 1: TheoryAerosol Science and Technology, 2004
- Aircraft‐based aerosol size and composition measurements during ACE‐Asia using an Aerodyne aerosol mass spectrometerJournal of Geophysical Research: Atmospheres, 2003
- Ambient aerosol sampling using the Aerodyne Aerosol Mass SpectrometerJournal of Geophysical Research: Atmospheres, 2003
- Quantitative sampling using an Aerodyne aerosol mass spectrometer 1. Techniques of data interpretation and error analysisJournal of Geophysical Research: Atmospheres, 2003
- Ultrafine particle size distributions measured in aircraft exhaust plumesJournal of Geophysical Research: Atmospheres, 2000
- Development of an Aerosol Mass Spectrometer for Size and Composition Analysis of Submicron ParticlesAerosol Science and Technology, 2000
- Design and Performance Evaluation of a Pressure-Reducing Device for Aerosol Sampling from High-Purity GasesAerosol Science and Technology, 1993