Journal cover Journal topic
Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

Journal metrics

  • IF value: 2.989 IF 2.989
  • IF 5-year<br/> value: 3.489 IF 5-year
    3.489
  • CiteScore<br/> value: 3.37 CiteScore
    3.37
  • SNIP value: 1.273 SNIP 1.273
  • SJR value: 2.026 SJR 2.026
  • IPP value: 3.082 IPP 3.082
  • h5-index value: 45 h5-index 45
doi:10.5194/amt-2015-398
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
18 Jan 2016
Review status
This discussion paper has been under review for the journal Atmospheric Measurement Techniques (AMT). The revised manuscript was not accepted.
Furthering information from OH and HO2 +RO2 observations using a high resolution time of flight mass spectrometer
R. L. Mauldin III1,2, M. P. Rissanen1, T. Petäjä1, and M. Kulmala1 1Department of Physics, University of Helsinki, P.O. Box 64, 00014, Finland
2Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, Colorado
Abstract. An instrument has been developed which allows an entire suite of oxidation products (H2SO4 and Extremely Low Volatile Organic Compounds, ELVOCs) to be measured along with the concentrations of the key radical species OH and HO2 +RO2. The system combines the techniques for chemical conversion of OH or HO2 +RO2 into H2SO4 together with nitrate ion (NO3-) Chemical Ionization (CI) and Atmospheric Pressure interface - Time of Flight Mass Spectrometer (NO3- CI-APi-ToF) which has been previously used for the detection of ELVOCs and a few other oxygenated organic species. The system exhibits the same sensitivity towards OH or HO2 +RO2 as previous quadrupole chemical ionization (CIMS) measurements with limits of detection of ~2 x 105 and ~2 x 106 molecule cm-3 for OH and HO2+RO2 respectively. Unlike previous CIMS measurements, the use of a NO3- CI-APi-ToF allows the acquisition of the entire mass spectrum at high resolution with each measurement, allowing one to see how the organic species behave when the sample flow is perturbed with reagent gasses (SO2 or NO). While the combination of these measurements into one instrument is of great practical value, it is the combination of these data within the spectra obtained in each mode that extends the information far beyond the measurements themselves.

Citation: Mauldin III, R. L., Rissanen, M. P., Petäjä, T., and Kulmala, M.: Furthering information from OH and HO2 +RO2 observations using a high resolution time of flight mass spectrometer, Atmos. Meas. Tech. Discuss., doi:10.5194/amt-2015-398, 2016.
R. L. Mauldin III et al.
Interactive discussionStatus: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version      Supplement - Supplement
 
RC1: 'Review of “Furthering information from OH and HO2+RO2 observations using a high resolution time of flight mass spectrometer”', Anonymous Referee #1, 15 Mar 2016 Printer-friendly Version Supplement 
 
RC2: 'Review', Anonymous Referee #2, 24 Mar 2016 Printer-friendly Version 
 
AC1: 'Final Response amt-2015-398', Roy Mauldin, 22 Apr 2016 Printer-friendly Version Supplement 
R. L. Mauldin III et al.
R. L. Mauldin III et al.

Viewed

Total article views: 412 (including HTML, PDF, and XML)

HTML PDF XML Total BibTeX EndNote
275 110 27 412 21 27

Views and downloads (calculated since 18 Jan 2016)

Cumulative views and downloads (calculated since 18 Jan 2016)

Saved

Discussed

Latest update: 28 May 2017
Publications Copernicus
Download
Short summary
The manuscript describes a novel instrument for the measurement of OH, HO2+RO2, and other atmospheric species. The instrument described combines the chemical ionization techniques of nitrate CIMS, OH conversion to H2SO4, HO2+RO2 conversion to H2SO4, and high resolution time of flight mass spectroscopy into one system. By using one instrument to obtain spectra it is possible to compare spectra from the different modes and gain further chemical information towards peak identification.
The manuscript describes a novel instrument for the measurement of OH, HO2+RO2, and other...
Share