Chem. J. Chinese Universities ›› 1988, Vol. 9 ›› Issue (6): 637.

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Amphoteric Terramycin Sensitive Electrodes and Selectivities

Yao Shouzhuo, Shiao Jun, Nie Lihua   

  1. Department of Chemical Engineering, Hunan University, Ghangsha
  • Received:1987-01-21 Online:1988-06-24 Published:1988-06-24

Abstract: Electrodes sensitive to cationic or anionic terramycin were constructed using, terramycinium silicotungstate, TPB, DPAand cetyltribctylammonium terramycina-te as electroactive materials. The terramycinium (terramycinate) sensitive elec-trode responds to terramycinium (terramycinate) down to 10 (40) μnol/Lover pHrange 1.6-3.2 (8.0-11.0) with a slope of ca, 57.2(-58)mV/lgC. The electrode selectivities toward quaternary ammoniums and inorganic cations are described in terms of ionic potential Z/Rand induction index I:lgKij = 9.87I-31.94Z/R + 290.44(R = 0.999) and lgKij =1.422 (Z/R)-1-3.363. (R= 0.942).

Key words: Terramycin sensitive electrode, Determination, of terramycih, trode selectlectivity

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