The determination of individual gaseous ionic alkyllead species in the atmosphere |
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| Authors: | CN Hewitt Roy M Harrison M Radojevic |
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| Institution: | Department of Environmental Science, University of Lancaster, Lancaster LA1 4YQ Great Britain;Department of Chemistry, University of Essex, Colchester CO4 3SQ Great Britain |
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| Abstract: | Gaseous ionic alkyllead species (in the ng Pb m?3 range) are collected from air by absorption in water. After extraction into n-hexane, they are propylated or butylated and quantified by gas chromatography/electrothermal atomic absorption spectrometry. Interference from inorganic lead compounds and aerosol-phase alkyllead compounds is entirely absent, whilst that from tetraalkyllead compounds is small and generally negligible. This method allows the unequivocal identification of gaseous ionic alkyllead species in the atmosphere. |
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