Title :
Bi-frequency-based microwave liquid sensor for multiple solutes quantification in aqueous solution
Author :
Chretiennot, Thomas ; Dubuc, David ; Grenier, Katia
Author_Institution :
LAAS, Toulouse, France
Abstract :
This paper presents a technique able to detect and quantify two different solutes in aqueous solution thanks to a single shot microwave measurements of a resonant liquid sensor at two different frequencies. The principle of operation is based on isosbestic characteristics of the sensor relatively to the two considered solutes. The solutes quantification requires a calibration phase. Extracted concentration from measurements leads to root mean square error (RMSE) of only few g/L of solute (3.2 g/L for glucose and 1.7 g/L for sodium chloride). The technique then reveals the potential richness of the spectral signatures from microwave sensor for indentifying and quantifying complex liquids.
Keywords :
calibration; mean square error methods; microwave detectors; microwave measurement; resonators; RMSE; aqueous solution; bifrequency-based microwave liquid sensor; calibration; isosbestic characteristics; multiple solute quantification; resonant liquid sensor; root mean square error; single shot microwave measurement; Calibration; Frequency measurement; Liquids; Microwave measurement; Microwave theory and techniques; Resonant frequency; Sugar; Chemical and biological sensor; microfluidic; microwave;
Conference_Titel :
Microwave Conference (EuMC), 2014 44th European
Conference_Location :
Rome
DOI :
10.1109/EuMC.2014.6986426