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Development of a Contactless Conductivity Sensor in Flowing Micro Systems for Cerium Nitrate

Zürn, Martin 1; Hanemann, Thomas 1
1 Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

Impedance spectroscopy has a high potential to detect chemical reactions in flowing systems. In this work, the approach using impedance spectroscopy as a possible analytical tool for a continuous hydrothermal syntheses (CHTS) is presented. With the CHTS-process, it is possible to produce metalloxide nanoparticles with a close particle size distribution and specific surface properties. For this, it is necessary to evaluate the electrode geometry, frequency and other factors influencing the impedance with respect to concentration measurements. In case of frequency-sweep measurements possible electrode geometries for C4D-Sensors (capacitively coupled contactless conductivity detection) are evaluated. Then distinguishability and reproducibility are tested applying titration measurements to show the ability for concentration detection in constant flow systems. The possibility to measure concentration changes in flowing systems in a reproducible and fast manner as well as with high distinguishability for the test solution cerium nitrate will be presented. Furthermore, the major influencing-factors like electrode geometry, frequency etc. could be determined. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000151585
Veröffentlicht am 18.10.2022
Originalveröffentlichung
DOI: 10.3390/pr10102075
Scopus
Zitationen: 1
Web of Science
Zitationen: 1
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 14.10.2022
Sprache Englisch
Identifikator ISSN: 2227-9717
KITopen-ID: 1000151585
HGF-Programm 43.34.01 (POF IV, LK 01) Lightweight Materials for Structural and Medical Application
Erschienen in Processes
Verlag MDPI
Band 10
Heft 10
Seiten Article no: 2075
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter contactless conductivity measurement; C4D-Sensor; constant flow; contactless concentration measurement; cerium nitrate
Nachgewiesen in Web of Science
Dimensions
Scopus
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