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  • 1
    Electronic Resource
    Electronic Resource
    Sulfur dioxide in the North American Arctic (1989)
    Springer
    Journal of atmospheric chemistry 9 (1989), S. 331-346 
    Details
    ISSN: 1573-0662
    Keywords: Sulfur dioxide ; arctic ; troposphere ; stratosphere ; vertical distribution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences
    Notes: Abstract Determinations of atmospheric sulfur dioxide were made across the North American Aretic using gas chromatography with a detection limit of 25 parts per trillion by volume and a precision of 25% or better. The vertical distribution of sulfur dioxide in the Arctic atmosphere in April, 1986 was highly variable, with concentrations ranging from the detection limit to 15 parts-per-billion by volume (ppbv). While SO2 exceeded 10 ppbv in an exceptional haze layer in the Alaskan Arctic, sulfur dioxide was sometimes in the 1 – 5 ppbv range when the haze was absent. This was particularly true for the Canadian Arctic in the vicinity of Alert. In the lower stratosphere over Ellesmere Island, sulfur dioxide was 0.85 ppbv.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00052841
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  • 2
    Electronic Resource
    Electronic Resource
    Determination of part-per-trillion levels of atmospheric dimethyl sulfide by isotope dilution gas chromatography/mass spectrometry (1990)
    Springer
    Journal of atmospheric chemistry 11 (1990), S. 299-308 
    Details
    ISSN: 1573-0662
    Keywords: Dimethyl sulfide ; isotope dilution ; gas chromatography ; mass spectrometry ; troposphere
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences
    Notes: Abstract Stable isotopic dilution was applied to the determination of dimethyl sulfide (DMS) in ambient air at the low part-per-trillion by volume (pptrv) levels. Perdeuterated DMS was used as an internal standard in the gas chromatography/mass spectrometry determination. The isotopically labelled internal standard provided insensitivity to possible losses of DMS in sampling and analysis. The lower limit of detection (LLD) was 1 pptrv with a sample acquisition time of 2 min.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00053779
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  • 3
    Electronic Resource
    Electronic Resource
    Grab sampling for the determination of sulfur dioxide and dimethyl sulfide in air by isotope dilution gas chromatography/mass spectrometry (1993)
    Springer
    Journal of atmospheric chemistry 16 (1993), S. 23-30 
    Details
    ISSN: 1573-0662
    Keywords: Dimethyl sulfide ; sulfur dioxide ; isotope dilution ; gas chromatography ; mass spectrometry ; grab sampling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00696621
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