Title :
Planer-type liquid junction Ag/AgCl reference electrode and its application in a potentiometric biosensor
Author :
Liao, Wei-Yin ; Lin, Hung-Yin ; Chou, Tse-Chuan
Author_Institution :
Dept. of Chem. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
A planer-type liquid junction Ag/AgCl reference electrode was developed using screen-print technology. The experimental results indicate that the potential shift of the planer-type liquid junction reference electrode was between 5 to 15 mV when the chloride ion concentration was in the range 10-6 to 0.3 M at a potential of 2 mV at pH=2 to 10. Restated, the potential shift is 1.5 to 2 mV as the chloride ion concentration changes by one order of magnitude and the pH of the solution has no effect. The pH measured using a planer-type liquid junction did not differ significantly from that obtained using a commercial reference electrode.
Keywords :
biomedical electrodes; biosensors; electrochemical electrodes; pH measurement; silver compounds; 1.5 to 2 mV; 5 to 15 mV; Ag-AgCl; chloride ion concentration; pH measurement; planer-type liquid junction; potential shift; potentiometric biosensor; reference electrode; screen-print technology; Biosensors; Calcium; Chemical engineering; Chemical sensors; Dielectric liquids; Electrodes; Insulation; Kirchhoff´s Law; Rubber; Silver;
Conference_Titel :
Bioengineering Conference, 2005. Proceedings of the IEEE 31st Annual Northeast
Print_ISBN :
0-7803-9105-5
Electronic_ISBN :
0-7803-9106-3
DOI :
10.1109/NEBC.2005.1432002
