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

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