期刊
MICROCHIMICA ACTA
卷 180, 期 9-10, 页码 783-789出版社
SPRINGER WIEN
DOI: 10.1007/s00604-013-0984-9
关键词
Proline; EC-SPME; Nanostructural conducting polypyrrole; Ion mobility spectrometry
资金
- Research Council of Tarbiat Modares University
- Iran National Science Foundation (INSF)
We report on a fast, simple and accurate method for the determination of proline in urine samples by employing a nanostructured film of conducting polypyrrole for electrochemically controlled solid-phase microextraction, and ion mobility spectrometry (IMS) for detection. This method has the advantages of simple sample preparation and a sensitivity of IMS to proline that is higher than that for other amino acids. The calibration curve is linear in the range of 0.5-60 mu g L-1 (4-521 nmol L-1), and the detection limit is 0.2 mu g L-1. The electrochemical potentials for uptake and release were optimized. The method was successfully applied to the clean-up and quantitation of trace amounts of proline in urine samples.
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