27 April 2009 Portable integrated capillary-electrophoresis system using disposable polymer chips with capacitively coupled contactless conductivity detection for on-site analysis of foodstuff
Author Affiliations +
Abstract
We present a compact portable chip-based capillary electrophoresis system that employs capacitively coupled contactless conductivity detection (C4D) operating at 4 MHz as an alternative detection method compared to the commonly used optical detection based on laser-induced fluorescence. Emphasis was put on system integration and industrial manufacturing technologies for the system. Therefore, the disposable chip for this system is fabricated out of PMMA using injection molding; the electrodes are screen-printed or thin-film electrodes. The system is designed for the measurement of small ionic species like Li+, Na+, K+, SO42- or NO3- typically present in foods like milk and mineral water as well as acids e.g. in wine.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Claudia Gärtner, Claudia Gärtner, Werner Hoffmann, Werner Hoffmann, Horst Demattio, Horst Demattio, Thomas Clemens, Thomas Clemens, Matthias Klotz, Matthias Klotz, Richard Klemm, Richard Klemm, Holger Becker, Holger Becker, } "Portable integrated capillary-electrophoresis system using disposable polymer chips with capacitively coupled contactless conductivity detection for on-site analysis of foodstuff", Proc. SPIE 7315, Sensing for Agriculture and Food Quality and Safety, 731505 (27 April 2009); doi: 10.1117/12.820316; https://doi.org/10.1117/12.820316
PROCEEDINGS
6 PAGES


SHARE
Back to Top