In a supporting electrolyte containing 0.6mol/L H_2SO_4,a sensitivity derivative wave of 2-AES is formed by oscillopolarography.The peak potential is-1.01V(vs.SCE),The change of peak height with the concentration of 2...In a supporting electrolyte containing 0.6mol/L H_2SO_4,a sensitivity derivative wave of 2-AES is formed by oscillopolarography.The peak potential is-1.01V(vs.SCE),The change of peak height with the concentration of 2-AES is linear in the range from 3.0×10^(-7) to 8.0×10^(-6)mol/L.The detection limit is 1.0×10^(-7)mol/L.The electrode reaction mechanism is discussed.展开更多
In the 0.3mol/L NH_4Cl supporting electrolyte,salicyl-fluorone exhibits a sensitive adsorptive wave by using linear scanning voltammetry with Ep_1=-0.70V and a diffusion wave with Ep_2=-0.68V(v8,SCE)at pH 2.5.On the s...In the 0.3mol/L NH_4Cl supporting electrolyte,salicyl-fluorone exhibits a sensitive adsorptive wave by using linear scanning voltammetry with Ep_1=-0.70V and a diffusion wave with Ep_2=-0.68V(v8,SCE)at pH 2.5.On the surface of HMDE, the adsorption of salieyl-fluorone obeys Frumkin adsorption isotherm.The adsorption coefficient(B),and attractive factor(v)and the amount of saturated adsorption(Γs)have been determined.展开更多
In this paper,the voltammetric behaviours of Ag cylinder electrode in 1 mol/dm(3) KOH solution have been investigated in the presence of ultrasound irradiation. The results based on the CV, EIS and polarization measur...In this paper,the voltammetric behaviours of Ag cylinder electrode in 1 mol/dm(3) KOH solution have been investigated in the presence of ultrasound irradiation. The results based on the CV, EIS and polarization measurements showed that ultrasound could enhance the mass transport, inhibit the oxygen evolution and increase the exchange current.展开更多
基金The project was Supported by The National Natural Science Foundation of China
文摘In a supporting electrolyte containing 0.6mol/L H_2SO_4,a sensitivity derivative wave of 2-AES is formed by oscillopolarography.The peak potential is-1.01V(vs.SCE),The change of peak height with the concentration of 2-AES is linear in the range from 3.0×10^(-7) to 8.0×10^(-6)mol/L.The detection limit is 1.0×10^(-7)mol/L.The electrode reaction mechanism is discussed.
文摘In the 0.3mol/L NH_4Cl supporting electrolyte,salicyl-fluorone exhibits a sensitive adsorptive wave by using linear scanning voltammetry with Ep_1=-0.70V and a diffusion wave with Ep_2=-0.68V(v8,SCE)at pH 2.5.On the surface of HMDE, the adsorption of salieyl-fluorone obeys Frumkin adsorption isotherm.The adsorption coefficient(B),and attractive factor(v)and the amount of saturated adsorption(Γs)have been determined.
文摘In this paper,the voltammetric behaviours of Ag cylinder electrode in 1 mol/dm(3) KOH solution have been investigated in the presence of ultrasound irradiation. The results based on the CV, EIS and polarization measurements showed that ultrasound could enhance the mass transport, inhibit the oxygen evolution and increase the exchange current.
