Determination of part-per-trillion levels of atmospheric dimethyl sulfide by isotope dilution gas chromatography/mass spectrometry |
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| Authors: | Donald C Thornton Alan R Bandy Robert G Ridgeway Arthur R Driedger III Marija Lalevic |
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| Institution: | (1) Department of Chemistry, Drexel University, 19104 Philadelphia, PA, U.S.A. |
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| 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. |
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| Keywords: | Dimethyl sulfide isotope dilution gas chromatography mass spectrometry troposphere |
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