A poly(2-Amino-Phenol-P-Sulphonic acid)Modified Electrode was prepared by cyclic voltammetry and the electrochemical behavior of Uric Acid(UA)on this modified electrode was studied.The result was showed that this modi...A poly(2-Amino-Phenol-P-Sulphonic acid)Modified Electrode was prepared by cyclic voltammetry and the electrochemical behavior of Uric Acid(UA)on this modified electrode was studied.The result was showed that this modified electrode has strong electrocatalytic functionality for UA,and strong anti-jamming impact for Ascorbic acid(AA).In pH=5.6 KH2PO4-Na2HPO4 buffer solution,use cyclic voltammetry and difference pulse voltammetry,the linear rang for determining UA was 8.0×10-6mol/L～2.0×10-4 mol/L(CV)and 4.0×10-7mol/L～1.0×10-5mol/L(DPV),The detection limit is 6.0×10-6 mol/L and 1.0×10-7 mol/L.Use of this method for measurement of UA in urine obtained satisfactory results.展开更多
The effect of pulp potential on activity of p amino phenol and its electrochemical mechanism on sulfide minerals have been researched. Results of test show that pulp potential can affect the depression activity of p a...The effect of pulp potential on activity of p amino phenol and its electrochemical mechanism on sulfide minerals have been researched. Results of test show that pulp potential can affect the depression activity of p amino phenol. The separation of sulfide minerals can be carried out by controlling dosage of p amino phenol, pulp pH and pulp potential. The mechanism of p amino phenol depressing sulfide minerals is not an electrostatic interaction but an electrochemical interaction. p amino phenol can lower the edge level of sulfide minerals, which leads the density of electron of mineral surface increased, as a result, the collector’s coatings on the mineral surface become unstable.展开更多
文摘A poly(2-Amino-Phenol-P-Sulphonic acid)Modified Electrode was prepared by cyclic voltammetry and the electrochemical behavior of Uric Acid(UA)on this modified electrode was studied.The result was showed that this modified electrode has strong electrocatalytic functionality for UA,and strong anti-jamming impact for Ascorbic acid(AA).In pH=5.6 KH2PO4-Na2HPO4 buffer solution,use cyclic voltammetry and difference pulse voltammetry,the linear rang for determining UA was 8.0×10-6mol/L～2.0×10-4 mol/L(CV)and 4.0×10-7mol/L～1.0×10-5mol/L(DPV),The detection limit is 6.0×10-6 mol/L and 1.0×10-7 mol/L.Use of this method for measurement of UA in urine obtained satisfactory results.
文摘The effect of pulp potential on activity of p amino phenol and its electrochemical mechanism on sulfide minerals have been researched. Results of test show that pulp potential can affect the depression activity of p amino phenol. The separation of sulfide minerals can be carried out by controlling dosage of p amino phenol, pulp pH and pulp potential. The mechanism of p amino phenol depressing sulfide minerals is not an electrostatic interaction but an electrochemical interaction. p amino phenol can lower the edge level of sulfide minerals, which leads the density of electron of mineral surface increased, as a result, the collector’s coatings on the mineral surface become unstable.
