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fast scan cyclic voltammetry
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     The Fast Scan Cyclic Voltammetry and Its Application to Electrochemistry
     快扫描循环伏安法及其在电化学中的应用
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     RECENT DEVELOPMENT OF ULTRA FAST SCAN CYCLIC VOLTAMMETRY
     超快扫速循环伏安法的研究进展
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     METHODS: Fast scan cyclic voltammetry, controlled potential electrolysis, linear sweep polarography and ultraviolet visible spectrophotometry were used in the present research.
     方法:用单扫描示波极谱法、快速扫描循环伏安法、恒电位电解法、紫外分光光度法等多种技术进行研究。
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  fast scan cyclic voltammetry
Using in vitro fast scan cyclic voltammetry, we measured cocaine potency for inhibiting dopamine uptake/clearance in accumbens slices 7 days after withdrawal from chronic cocaine pretreatments.
      
Electrically stimulated DA release was monitored in guinea pig striatal slices using carbon-fiber microelectrodes with fast-scan cyclic voltammetry.
      


A review on the fast scan cyclic voltammetry and its basic characteristics is given with 59 references. The applications of fast scan cyclic voltammetry to electrochemistry and electroanalytical chemistry are emphasized.

本文介绍了快扫描循环伏安法及其特点,对这一方法在电化学及电分析化学中的应用作了评述。

The development of Ultra Fast Scan Cyclic Voltammetry is reviewed for 27 reference papers. Emphasizes have been made on the theory and techniques related to the instrumentation, electrode electrochemical cell system, iRu compensation, background subtraction and data manipulations.

本文对超快扫速循环伏安法的研究进展做了一个简要的综述,着重讨论了关于电子仪器、电极与电化学池、电位降补偿、背景扣除、数据处理等,所涉及的部分理论和技术问题,引述了27篇文献.

AIM: To study the polarographic behaviour and reduction mechanism of medroxyprogesterone acetate (MPA) in acetate buffer solution. A new method for the determination of MPA was established by linear sweep polarography. METHODS: Fast scan cyclic voltammetry, controlled potential electrolysis, linear sweep polarography and ultraviolet visible spectrophotometry were used in the present research. RESULTS: The C=C bond of MPA first undergoes a 1 e, 1H + reduction to form a radical HMPA ·, then the...

AIM: To study the polarographic behaviour and reduction mechanism of medroxyprogesterone acetate (MPA) in acetate buffer solution. A new method for the determination of MPA was established by linear sweep polarography. METHODS: Fast scan cyclic voltammetry, controlled potential electrolysis, linear sweep polarography and ultraviolet visible spectrophotometry were used in the present research. RESULTS: The C=C bond of MPA first undergoes a 1 e, 1H + reduction to form a radical HMPA ·, then the further reduction of HMPA · in 1 e, 1H + process is simultaneous with the dimerization reaction between HMPA · and the neutral molecule MPA. In 0 2 mol·L -1 HAc NaAc (pH 5 0) buffer solution, the reduction wave ( E P= -1 33 V , vs.SCE) of MPA can be used for analytical purpose. The second order derivative peak current of MPA is linear with the MPA concentration over the range of 2 0×10 -6 ~6 0×10 -5 mol·L -1 . The linear regression equation is i P″(nA)=5 81+6 8×10 5 C MPA (mol·L -1 ), and the correlation coefficient γ=0 998. The detection limit is 8 0×10 -7 mol·L -1 .CONCLUSION: The characteristics of the polarographic reduction of steroids was elucidated. The process of reduction was the two step transmission process of electric charge with the intermediate free radical.

目的:研究醋酸甲羟孕酮(MPA)的电极反应机理,拟定了测定MPA的单扫描示波极谱法。方法:用单扫描示波极谱法、快速扫描循环伏安法、恒电位电解法、紫外分光光度法等多种技术进行研究。结果:在醋酸盐缓冲溶液中,MPA的C=C双键首先发生单电子单质子还原,产生了中间体自由基HMPA·。随后HMPA·可以单电子单质子方式进一步还原,形成产物H2MPA;同时也可以与中性MPA分子形成二聚体自由基HMPA·MPA·。在02mol·L-1HAc—NaAc缓冲液中,MPA还原波的二阶导数峰电流iP″与其浓度CMPA在20×10-6~60×10-5mol·L-1范围内成线性关系,相关系数γ=0998。结论:证实MPA的还原过程有中间体自由基参与。

 
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