Journal
MIKROCHIMICA ACTA
Volume 135, Issue 1-2, Pages 91-95Publisher
SPRINGER WIEN
DOI: 10.1007/s006040070023
Keywords
speciation; gas chromatography; hyphenated technique; organometallic compounds
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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 He 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, stir-ring 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.
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