Thermal Desorption Techniques for Gas Chromatographic Analysis of Particulate Matter
Polycyclic aromatic hydrocarbons are extracted from atmospheric particulate samples with a thermal desorption technique that circumvents the need for lengthy solvent extraction procedures prior to gas chromatographic analysis. The polycyclic aromatic hydrocarbons are extracted by vacuum-sublimation...
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Veröffentlicht in: | Analytical letters 1984-01, Vol.17 (2), p.97-111 |
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Format: | Artikel |
Sprache: | eng |
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Online-Zugang: | Volltext |
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Zusammenfassung: | Polycyclic aromatic hydrocarbons are extracted from atmospheric particulate samples with a thermal desorption technique that circumvents the need for lengthy solvent extraction procedures prior to gas chromatographic analysis. The polycyclic aromatic hydrocarbons are extracted by vacuum-sublimation and collected in a cold trap. The sublimed species are then cryogenically focused at the head of a fused silica capillary column by a thermal purging technique and subsequently analyzed. The technique is applicable to screening tests for selected polycyclic aromatic hydrocarbons when used with a sufficiently specific detector, and has the advantages of simplicity and low cost. |
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ISSN: | 0003-2719 1532-236X |
DOI: | 10.1080/00032718408065269 |