Journal of Atmospheric Chemistry

, Volume 16, Issue 1, pp 23–30 | Cite as

Grab sampling for the determination of sulfur dioxide and dimethyl sulfide in air by isotope dilution gas chromatography/mass spectrometry

  • Byron W. Blomquist
  • Alan R. Bandy
  • Donald C. Thornton
  • Shaoming Chen
Article

Abstract

Developments allowing the direct determination of sulfur dioxide and dimethyl sulfide in grab samples by gas chromatography/mass spectrometry with isotopically labeled standards (GC/MS/ILS) are reported. Isotopomers of DMS and SO2 are used as internal standards. Spiked air samples are dried to a dew point of <−60 °C and trapped cryogenically in loops of Teflon tubing. Sealed samples are transported to the laboratory under liquid nitrogen and later subjected to GC/MS analysis. Holding times of up to one month do not result in significant sample loss. For samples collected in a clean marine environment, concentrations of SO2 and DMS greater than 5 and 8 pptv, respectively, are significantly different from blanks at the 95% confidence level. Average measurement precision derived from a propagation of errors are 9% for SO2 and 42% for DMS at concentrations from 5–15 pptv.

Improvements are outlined which should provide sensitivity and precision comparable to that of on-site GC/MS. The technique will allow increased flexibility for the determination of trace sulfur species in the field under conditions where deployment of a mass spectrometer is not possible.

Key words

Dimethyl sulfide sulfur dioxide isotope dilution gas chromatography mass spectrometry grab sampling 

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References

  1. Andreae, M. O., Ferek, R. J., Bermond, F., Byrd, K. P., Engstrom, R. T., Hardin, S., Houmere, P. D., LeMarrec, F., Raemdonck, H., and Chatfield, R. B., 1985, Dimethyl sulfide in the marine atmosphere,J. Geophys. Res. 90, 12,891–12,900.Google Scholar
  2. Bandy, A. R., Tucker, B. J., and Maroulis, P. J., 1985, Determination of part-per-trillion by volume levels of atmospheric carbon disulfide by gas chromatography/mass spectrometry,Anal. Chem. 57, 1310–1314.Google Scholar
  3. Charlson, R. J., Lovelock, J., Andreae, M. O., and Warner, S., 1987, Oceanic phytoplankton, atmospheric sulfur, cloud albedo and climate,Nature 326, 655.Google Scholar
  4. Driedger, A. R. III, Thornton, D. C., Lalevic, M., and Bandy, A. R., 1987, Determination of part-pertrillion levels of atmospheric sulfur dioxide by isotope dilution gas chromatography/mass spectrometry,Anal. Chem. 59, 1196–1200.Google Scholar
  5. Ferek, R. J., Hegg, D. A., Herring, J. A., and Hobbs, P. V., 1991, An improved filter pack technique for airborne measurement of low concentrations of SO2,J. Geophys. Res. 96, 22 373–22 378.Google Scholar
  6. Thornton, D. C., Driedger, A. R. III, and Bandy, A. R., 1986, Determination of part-per-trillion levels of sulfur dioxide in humid air,Anal. Chem. 58, 2688–2691.Google Scholar
  7. Yin, F., Grosjean, D., Flagan, R. C., and Seinfeld, J. H., 1990a, Photooxidation of dimethyl sulfide and dimethyl disulfide. II: Mechanism evaluation,J. Atmos. Chem. 11, 365–399.Google Scholar
  8. Yin, F., Grosjean, D., and Seinfeld, J. H., 1990b, Photooxidation of dimethyl sulfide and dimethyl disulfide. I: Mechanism development,J. Atmos. Chem. 11, 309–364.Google Scholar

Copyright information

© Kluwer Academic Publishers 1993

Authors and Affiliations

  • Byron W. Blomquist
    • 1
  • Alan R. Bandy
    • 1
  • Donald C. Thornton
    • 1
  • Shaoming Chen
    • 1
  1. 1.Department of ChemistryDrexel UniversityPhiladelphiaUSA

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