Chinese Journal of Applied Chemistry ›› 1992, Vol. 0 ›› Issue (1): 89-91.

• Report • Previous Articles     Next Articles

CATALASE ENZYME ELECTRODE AND ITS PROPERTY

Lu Zhongqing, Zhou Zuxin, Cao Dajun, Zhang Zongrang   

  1. Department of Chemistry, Shanghai Teachers' University, Shanghai 200234
  • Received:1990-11-27 Revised:1991-04-05 Published:1992-02-10 Online:1992-02-10

Abstract: A catalase membrane immobilized on a nylon net was prepared, using freshly synthesized triethylonium tetrafluoroborate as immobilizer. The membrane had an activity of 80unit/cm2,while that immobilized by dimethyl sulfate showed an activity only of 35, 6unit/cm2 .The catalase electrode showed linear response within 5, 0×10-6~5,0×10-4mol·L-1,with detection lirit of 4,0×10-6mol·L-1 and 95,2% recovery.Its service life is more than 500 times. SO42-, Cl-, NO3-,NH4+,Ac-,glycine,glueose etc. do not interfere with the detection.

Key words: catalase, enzyme electorde, immobilization, hydrogenperoxide determination