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: A new method is described for sampling and sample application in the ultra-trace analysis of air by gas chromatography-mass spectrometry. In this new technique, a preseparation occurs on the gas chromatographic column during sample application, since the atmospheric constituents that are co-condensed during sample application we call this method "Druckaufgabe" (pressure application). The method is not only of theoretical value. It has a potentially wide application to occupational and environmental problems.

clinical chemistry and laboratory medicine

Eine neue Methode zur Probennahme und Probenaufgabe bei der mit Gaschromatographie/Massenspektrometrie durchgeführten Luftanalyse im Ultraspurenbereich