Atmospheric trace gas measurements using ion mobility spectrometer
A.-K. Viitanen1, E. Saukko1, H. Junninen2, S. Rantanen2, M. Kulmala2, A. Virtanen1, and J. M. Mäkelä11Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, P.O. Box 692, 33101 Tampere, Finland 2University of Helsinki, Department of Physics, P.O. Box 64, 00014 University of Helsinki, Finland
Received: 07 Jun 2011 – Accepted for review: 24 Jun 2011 – Discussion started: 04 Aug 2011
Abstract. Ion mobility spectrometer (IMS) was implemented to measure gas phase compounds from ambient air in order to study the suitability of the technique for on-line atmospheric measurements. The measurements took place at the SMEAR II station in Hyytiälä, Finland during spring periods on 2008 and 2009. We were able to separate several different atmosphere related ion mobility peaks form the measured ion mobility distributions. The hypothetic origins of these peaks are discussed accompanying the comparison with earlier trace gas measurements by different techniques. The potential of the IMS for atmospheric studies utilizing the concept used here was found out to be in monitoring the overall cleanness of prevailing atmospheric conditions as well as fast detection of the changes of those conditions. With further developing of the technique based on experience gathered in this study the IMS could be tuned to better respond to current measurement needs in atmospheric studies.
Viitanen, A.-K., Saukko, E., Junninen, H., Rantanen, S., Kulmala, M., Virtanen, A., and Mäkelä, J. M.: Atmospheric trace gas measurements using ion mobility spectrometer, Atmos. Meas. Tech. Discuss., 4, 4957-4990, doi:10.5194/amtd-4-4957-2011, 2011.