Construction of Electrochemical Sensor Based on Praseodymium Hexacyanoferrate Modified Graphite Electrode and Its Application for Cysteine Determination
10.3724/SP.J.1096.2010.00229
- VernacularTitle:铁氰化镨修饰的电化学传感器的研制及其对半胱氨酸的测定
- Author:
Yuanwen ZHONG
;
Mouhong LIN
;
Jiedan ZHOU
;
Yingju LIU
- Publication Type:Journal Article
- Keywords:
Cysteine;
Praseodymium hexacyanoferrate;
Electrocatalysis;
Chemically modified electrode
- From:
Chinese Journal of Analytical Chemistry
2010;38(2):229-232
- CountryChina
- Language:Chinese
-
Abstract:
Praseodymium hexacyanoferrate film was modified on the graphite electrode by cyclic voltammetry in the solution of PrCl_3 and K_3Fe(CN)_6. Its electrochemical properties, including the influence of different scan rates, ions, and K~+ concentrations on the film, were studied. The membrane was characterized by IR and XPS. In IR spectrum, the vibration of cyano group verified from the formation of the film on the electrode. In XPS spectrum, the splitting of Fe2p_(1/2) )and Fe2p_(3/2)) showed that the valence of iron has been changed in the film formation, and a proper electropolymerization mechanism was put forward. The results showed the PrHCF film have some electrocatalytic activity to the oxidation of cysteine. The detection conditions for cysteine such as the potential and pH were also discussed.
