Investigation on Tungsten Needle pH Sensor Modified by Polyaniline Film and Its Applications to the Crucian pH Detection
A tungsten electrode modified with polyaniline was prepared as working electrode, the platinum wire electrode for counter electrode, and the saturated Ag/AgCl redox system for reference electrode, with the base on solution H2SO4(1.5mol/L) vs. aniline solution O.lmol/L. The sensor showed a Nernst response in the pH range of 2~12 and a response time less than 1 min. Connected the tungsten filament electrode and silver wire electrode (mentioned above) to the anode and cathode of the pHS-25 type pH meter respectively, inserted the electrodes to the measured positions of the sample, and then recorded the potential reading when the potential value was stable, the results would be quantified by the curve (E-pH curve) finally.The sensor has been successfully employed to determine pH in the crucian from the live fish to the putrefied fish.
Polyaniline Tungsten pH Sensor Crucian
Chao Jin WANG Gui Mei Cai Jin Yin Zhang Shuan Xia Du
College of Food Science and Technology, Shanghai Ocean University , Shanghai 201306 , China
国际会议
上海
英文
1831-1834
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）