FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (8): 441-443.

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Investigation on Tungsten Needle pH Sensor Modified by Polyaniline Film and Applications for Crucian pH Detection

 WANG  Chao-Jin, YUAN  Jin-Feng   

  1. College of Food Science and Technology, Shanghai Fisheries University , Shanghai 200090, China
  • Online:2007-08-15 Published:2011-10-24

Abstract: A tungsten electrode modified with polyaniline was prepared as working electrode. Ag/AgCl redox system was used as reference electrode. The sensor showed a Nernst response in the pH range of 2~12 with a response time less than 1 min. The sensor has been successfully employed to determine pH in the crucian from both the live fish to the putrefied fish.

Key words:  , polyaniline; tungsten; pH sensor; crucian;