Amperometric carbohydrate detection in flow systems by means of a bismuth modified platinum electrode |
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| Authors: | A Strübing G Wittstock R Szargan G Werner |
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| Institution: | (1) Institute of Analytical Chemistry, University of Leipzig, Linnéstrasse 3, D-04103 Leipzig, Germany;(2) Institute of Physical and Theoretical Chemistry, University of Leipzig, Linnéstrasse 2, D-04103 Leipzig, Germany |
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| Abstract: | Bismuth modified platinum electrodes are used for constant-potential amperometric determination of carbohydrates in flow systems. The monitored response is stable and reproducible over more than two days. An attempt is made to gain more detailed information about the characteristics of the modified layer by electrochemical methods and X-ray photoelectron spectroscopy. The response proved to be linear over the investigated concentration range (1.1–1200  mol/L) and detection limits for glucose and fructose were found to be 1.1 mol/L. |
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