Title :
Estimation of components and concentrations in mixture solutions of electrolytes using a liquid flow system with acoustic wave sensor
Author :
Yamazaki, T. ; Kondoh, J. ; Matsui, Y. ; Shiokawa, S.
Author_Institution :
Fac. of Eng., Shizuoka Univ., Hamamatsu, Japan
Abstract :
Shear horizontal surface acoustic wave (SH-SAW) sensors fabricated on 36 degree-rotated Y-cut X-propagating LiTaO3 can detect the electrical properties of liquid samples with high sensitivity. In order to determine the type and concentration of an ionic solution, we have utilized a liquid flow system with the SH-SAW sensor. In this paper, we have developed a flow sensing system to determine molar concentrations of a binary mixture solution. The database obtained from the transient responses is used in the pattern recognition technique. In experiments, mixture solutions of BaCl2 and HCl are used as one example. The estimated results correspond to the actual values. Moreover preliminary investigation to estimate molar concentration of a ternary mixture ionic solution of BaCl2, HCl, and NaCl has been also done by using a flow sensing system and a result is presented
Keywords :
chemical sensors; electrolytes; lithium compounds; surface acoustic wave sensors; transient response; BaCl2; HCl; LiTaO3; NaCl; Y-cut X-propagating substrates; electrolytes; flow sensing system; ionic solution; liquid flow system; mixture solutions; molar concentrations; pattern recognition technique; shear horizontal surface acoustic wave sensors; transient responses; Acoustic propagation; Acoustic sensors; Acoustic waves; Conductivity; Databases; Delay; Fluid flow; Human computer interaction; Sensor systems; Surface acoustic waves;
Conference_Titel :
Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE
Conference_Location :
Sendai
Print_ISBN :
0-7803-4095-7
DOI :
10.1109/ULTSYM.1998.762199
