Determination of tetraethyllead and tetramethyllead using high performance liquid chromatography and electrochemical detection |
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Authors: | M. Robecke and K. Cammann |
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Affiliation: | (1) Chair of Analytical Chemistry, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Strasse 8, W-4400 Münster, Federal Republic of Germany |
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Abstract: | Summary A new method for the separation of tetramethyllead (TML) and tetraethyllead (TEL) was developed using high-performance liquid chromatography. The electrochemical detection was examined with different electrodes. Amperometric and pulse-amperometric techniques were investigated and the optimal working potential for each electrode was determined. Linearity for the glassy carbon electrode was observed between 350 ng and 30 g; the detection limit is 310 ng (TML) resp. 340 ng (TEL). In case of the mercury gold electrode the linearity range was 300 g–3 g and the detection limit 1.5 m (TML) resp. 1.7 g (TEL). |
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