Coupling of SPME and GC-AED for the Determination of Organometallic Compounds |
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Authors: | Sibylle Mothes Rainer Wennrich |
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Institution: | (1) UFZ – Centre for Environmental Research, Department of Analytical Chemistry, Permoserstrasse 15, D-04318 Leipzig, Germany, DE |
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Abstract: | The solid-phase microextraction (SPME) technique coupled with gas chromatography and atomic emission detection was successfully
applied for the determination of selected organometallic species of Pb, As and Hg in aqueous samples. To obtain a high extraction
yield, the SPME conditions were optimised for each element by fibre selection and varying the exposure time, stirring rate,
pH range and desorption time. All the organometallic compounds tested were extracted from the aqueous phase using SPME. The
preconcentration factors attained ranged between 40 and 150, depending on the compound. Detection limits in the pg/L and ng/L
ranges were achieved.
Received January 18, 2000. Revision April 11, 2000. |
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Keywords: | : Speciation gas chromatography hyphenated technique organometallic compounds |
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