Zusammenfassung
Die Bestimmung der Gesamtkonzentration an Tetraalkylbleiverbindungen in der Luft beruht auf der Kondensation in einer Kühlfalle bei −130° C, Desorption bei 60° C in ein Salpetersäure-Wasserstoffperoxid-Gemisch und anschließender Bestimmung mit Graphitofen-AAS. Die Methode ist hochspezifisch und wird durch bleihaltige Festteilchen nicht gestört. Die Nachweisgrenze beträgt 42 ng Pb/m3 für 3601-Proben.
Summary
The determination of the total concentration of tetraalkyllead compounds in the air is based on the cryogenic condensation in a cooled trap at −130° C, thermal desorption at 60° C into impingers containing nitric acid and hydrogen peroxide and a determination with graphite furnace atomic-absorption. The method is highly specific and suffers no interferences from lead in the particulate phase. The detection limit is 42 ng Pb/m3 for air samples of ca. 3601.
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This work was carried out within the framework of the National Research and Development Program on Environment of the Interministrial Commission for Science Policy, Belgium.
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Jiang, S.G., Chakraborti, D., De Jonghe, W. et al. Atomic-absorption spectrophotometric determination of volatile organolead compounds in the atmosphere. Z. Anal. Chem. 305, 177–180 (1981). https://doi.org/10.1007/BF00492611
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DOI: https://doi.org/10.1007/BF00492611