Chinese Journal of Applied Chemistry ›› 2010, Vol. 27 ›› Issue (03): 353-357.DOI: 10.3724/SP.J.1095.2010.90208

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Preparation of Silver Doped Poly (L-Aspartic Acid) Modified Electrode and Its Determination for Epinephrine

CHEN Gao-Li, MA Wei, SUN Deng-Ming*   

  1. (School of Chemistry and Materials Science,Huaibei Coal Normal College,Huaibei 235000)
  • Received:2009-03-30 Revised:2009-06-01 Published:2010-03-10 Online:2010-03-10

Abstract:

The silver doped poly(L-aspartic acid) modified electrode was prepared by cyclic voltammetric method, and the voltammetric behavior of epinephrine and cyclic voltammetric method determination of epinephrine were studied at the silver doped poly(L-aspartic acid) modified electrode. In pH3.5 phosphate buffer solution, the peak potential of epinephrine were 0.447V of Epa and 0.387 V of Epc (νs Ag/AgCl) at the scan rate 50 mV/s. The linear range for the determination of epinephrine were 8.0×10-8~1.0×10-5 mol/L and 1.0×10-5~1.0×10-4 mol/L. The detection limit was 8.0×10-9 mol/L. This method was applied to the determination of epinephrine in drug and urine with satisfactory results.

Key words: epinephrine, L-aspartic acid, silver doped, modified electrode, cyclic voltammetry

CLC Number: