P2.1.14 Detection of toxic chromium species in water using cellbased sensor systems
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- P2.1 Biosensors
- Author(s)
- U. Bohm, A. Mucha, E. Stütz, M. Schienle, M. Fleischer - Siemens AG, Corporate Research & Technologies, C. Werner, M. Bäcker, C. Krumbe, M. Schöning - Aachen University of Applied Sciences, Institute of Nano- and Biotechnologies (INB), P. Wagner - Hasselt University, Institute for Materials Research (IMO/IMOMEC) (Belgium)
- Pages
- 1364 - 1367
- DOI
- 10.5162/IMCS2012/P2.1.14
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
In this study, several cell-based sensor systems have been evaluated and compared for their usability as environmental sensors in aquatic systems. Toxic chromium(VI) ions as well as non-toxic chromium(III) ions have been used as model substances, since chromium pollutions are of major concern. The investigated systems perform impedance, acidification and oxygen consumption measurements as well as combinations of these parameters. With multi-parametric sensor systems, the detection of Cr(VI) contamination is possible even at the limit of drinking water regulations (0.5 μM Cr(VI)). Oxygen consumption seems to be the most sensitive parameter as it increases at lowest concentrations within 3 hours. The continuous recording of physiologically relevant data even shows the early beginning of a toxic reaction. Tested V79 hamster lung fibroblast cells react only towards the presence of toxic Cr(VI), while non toxic Cr(III) is not impairing the cellular physiology or morphology. The use of living cells in combination with sensor technology is promising to have a major impact in the field of broad-band environmental sensors.