HR: 0830h
AN: A31D-0063    [PDF]
TI: Development of an in situ gas chromatograph - mass selective detector for the purpose of studying long-range pollution transport from Asia
AU: * Neu, J L
EM: jessica.neu@noaa.gov
AF: National Research Council Fellow, NOAA/OAR/CMDL R/CMDL1 325 Broadway, Boulder, CO 80305 United States
AU: * Neu, J L
EM: jessica.neu@noaa.gov
AF: NOAA Climate Monitoring and Diagnostics Laboratory, NOAA/OAR/CMDL1 R/CMDL1 325 Broadway, Boulder, CO 80305 United States
AU: Daube, B C
EM: bruce.daube@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, NOAA/OAR/CMDL R/CMDL1 325 Broadway, Boulder, CO 80305 United States
AU: Daube, B C
EM: bruce.daube@noaa.gov
AF: NOAA Climate Monitoring and Diagnostics Laboratory, NOAA/OAR/CMDL1 R/CMDL1 325 Broadway, Boulder, CO 80305 United States
AU: Moore, F L
EM: fred.moore@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, NOAA/OAR/CMDL R/CMDL1 325 Broadway, Boulder, CO 80305 United States
AU: Moore, F L
EM: fred.moore@noaa.gov
AF: NOAA Climate Monitoring and Diagnostics Laboratory, NOAA/OAR/CMDL1 R/CMDL1 325 Broadway, Boulder, CO 80305 United States
AU: Dutton, G S
EM: geoff.dutton@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, NOAA/OAR/CMDL R/CMDL1 325 Broadway, Boulder, CO 80305 United States
AU: Dutton, G S
EM: geoff.dutton@noaa.gov
AF: NOAA Climate Monitoring and Diagnostics Laboratory, NOAA/OAR/CMDL1 R/CMDL1 325 Broadway, Boulder, CO 80305 United States
AU: Hall, B D
EM: bradley.hall@noaa.gov
AF: NOAA Climate Monitoring and Diagnostics Laboratory, NOAA/OAR/CMDL1 R/CMDL1 325 Broadway, Boulder, CO 80305 United States
AU: Elkins, J W
EM: james.w.elkins@noaa.gov
AF: NOAA Climate Monitoring and Diagnostics Laboratory, NOAA/OAR/CMDL1 R/CMDL1 325 Broadway, Boulder, CO 80305 United States
AB: In September 2002, we began work on the development and construction of an automated, 3 channel gas chromatograph (GC) with a mass selective detector (MSD) and two electron capture detectors (ECDs). The instrument will be placed at a Pacific CMDL station (Mauna Loa or Trinidad Head), and will make continuous measurements of a variety of chemical species with a wide range of lifetimes, including chloroflourocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs), methyl halides, non-methane hydrocarbons (NMHCs), peroxyacetyl nitrate (PAN), nitrous oxide, and sulfur hexafluoride. The primary goal is to characterize the episodic long-range transport of pollution from Asia. We have completed development of a cryogenic trapping system for pre-concentrating samples for the MSD channel. We present a comparison and characterization of two types of traps, one with a one-inch section of Porapak Q as the adsorbent material, and one with 6 mg of Carboxen 1003 and 4 mg of Carboxen 1000. We discuss the suitability of each of these traps for our intended research. We also present our progress on other aspects of the measurement system, including a dynamic dilution system for calibration of PAN measurements on one of the ECD channels, and a discussion of the science issues involved in choosing the deployment location.
DE: 0345 Pollution--urban and regional (0305)
DE: 0365 Troposphere--composition and chemistry
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting