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Appl Opt


Title:Extractive FTIR spectroscopy with cryogen-free low-temperature inert preconcentration for autonomous measurements of atmospheric organics: 1: Instrument development and preliminary performance
Author(s):Buckley PI; Bowdle DA; Newchurch MJ; Sive BC; Mount GH;
Address:
Journal Title:Appl Opt
Year:2015
Volume:54
Issue:10
Page Number:2908 - 2921
DOI: 10.1364/AO.54.002908
ISSN/ISBN:1539-4522 (Electronic) 1559-128X (Linking)
Abstract:"In collaboration with the Jefferson County Department of Health and the Environmental Protection Agency (EPA), the University of Alabama in Huntsville developed a novel sensor for detecting very low levels of volatile organic compounds (VOCs). This sensor uses a commercial Fourier-transform infrared (FTIR) spectrometer, a commercial long-path IR gas cell, a commercial acoustic Stirling cyrocooler, and a custom cryogen-free cryotrap to improve sensitivity in an autonomous system with on-board quality control and quality assurance. Laboratory and initial field results show this methodology is sensitive to and well-suited for a wide variety of VOC atmospheric research and monitoring applications, including EPA National Air Toxics Trends Stations and the National Core monitoring network"
Keywords:"Acrolein/chemistry Air Pollutants/*analysis Alabama Algorithms *Atmosphere Calibration Chromatography, Gas Environmental Monitoring/*instrumentation Equipment Design Optical Phenomena Quality Control Software Spectrophotometry/methods Spectroscopy, Fourie;"
Notes:"MedlineBuckley, Patrick I Bowdle, David A Newchurch, M J Sive, Barkley C Mount, George H eng Research Support, U.S. Gov't, Non-P.H.S. 2015/05/15 Appl Opt. 2015 Apr 1; 54(10):2908-21. doi: 10.1364/AO.54.002908"

 
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