Abstract
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 μg; the detection limit is 310 ng (TML) resp. 340 ng (TEL). In case of the mercury gold electrode the linearity range was 300 μg–3 μg and the detection limit 1.5 μm (TML) resp. 1.7 μg (TEL).
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