PHASE-SELECTIVE ALTERNATING-CURRENT ADSORPTIVE STRIPPING VOLTAMMETRY OF FOLIC-ACID ON A MERCURY THIN-FILM ELECTRODE

被引:7
|
作者
DELPOZO, JA [1 ]
GARCIA, AC [1 ]
ORDIERES, AJM [1 ]
BLANCO, PT [1 ]
机构
[1] UNIV OVIEDO, DEPT PHYS & ANALYT CHEM, E-33071 OVIEDO, SPAIN
关键词
FOLIC ACID; ADSORPTIVE STRIPPING VOLTAMMETRY; MERCURY FILM ELECTRODE;
D O I
10.1002/elan.1140040116
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Optimum conditions for the mercury electrodeposition onto glassy carbon electrodes and the optimum alternating current (AC) adsorptive stripping signals of folic acid (vitamin B-12) were found. The film was characterized by electron microscopy and the results obtained in the analysis of the vitamin were compared with those previously reported using conventional mercury electrodes (static or hanging). The mercury thin film electrode (MTFE) has shown more sensitive signals for folic acid with good performance and reproducibility. A detection limit down to 10(-12) M could be reached by using 300 s accumulation time.
引用
收藏
页码:87 / 92
页数:6
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