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Layer-by-layer thin film-coated electrodes for electrocatalytic determination of ascorbic acid

被引：21
|
作者：
Wang, Baozhen [1 ]
Noguchi, Takio [1 ]
Anzai, Jun-ichi [1 ]
机构：
[1] Tohoku Univ, Grad Sch Pharmaceut Sci, Aoba Ku, Sendai, Miyagi 9808578, Japan
来源：
TALANTA | 2007年 / 72卷 / 02期
关键词：
LbL film; ascorbic acid; ferricyanide ion; electrocatalysis;
D O I：
10.1016/j.talanta.2006.10.044
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Multilayer thin films composed of poly(allylamine hydrochloride) (PAH) and carboxymethyl cellulose (CMC) have been prepared on the surface of a gold (An) disk electrode by a layer-by-layer deposition of PAH and CMC and ferricyanide ions ([Fe(CN)(6)](3-)) were confined in the film. [Fe(CN)(6)](3-) ions can be successfully confined in the films from weakly acidic or neutral [Fe(CN)(6)](3-) solutions, while, in basic solution, [Fe(CN)(6)](3-) ion was not confined. The [Fe(CN)(6)](3-) ion-confined An electrode showed clear redox peaks in the cyclic voltammogram around 0.35 V versus Ag/AgCl. The amounts of [Fe(CN)(6)](3-) ions confined in the films depended on the thickness of the films or the number of layers in the LbL films. The (Fe(CN)(6)](3-) ion-confined Au electrode was used for electrocatalytic determination of ascorbic acid in the concentration range of 1-50 mM. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：415 / 418
页数：4
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