Abstract
The introduction of an air sample into a mass spectrometer with the use of a multimembrane system allows one to enrich the original matrix with gaseous and volatile organic components. Experimental tests show that discontinuous leakage with a three-membrane inlet system reduces the detection limit by a factor of up to ∼105 (for toluene) compared to the direct introduction of a sample.
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Viktorova, O.S., Kogan, V.T. & Manninen, S.A. Enrichment of a Sample with Gaseous and Volatile Organic Components upon Its Discontinuous Introduction into a Portable Mass Spectrometer through a Membrane Inlet. Journal of Analytical Chemistry 58, 942–943 (2003). https://doi.org/10.1023/A:1026175616401
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DOI: https://doi.org/10.1023/A:1026175616401