Departamento de Química, Área de Química Analítica, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, E-09001 Burgos, Spain; E-Mails:
Sensors (Basel). 2009;9(1):219-31. doi: 10.3390/s90100219. Epub 2009 Jan 8.
This paper describes a procedure for the determination of antimony (III) by differential pulse anodic stripping voltammetry using a mercury film screen-printed electrode as the working electrode. The procedure has been optimized using experimental design methodology. Under these conditions, in terms of Residual Standard Deviation (RSD), the repeatability (3.81 %) and the reproducibility (5.07 %) of the constructed electrodes were both analyzed. The detection limit for Sb (III) was calculated at a value of 1.27×10(-8) M. The linear range obtained was between 0.99 × 10(-8) - 8.26 × 10(-8) M. An analysis of possible effects due to the presence of foreign ions in the solution was performed and the procedure was successfully applied to the determination of antimony levels in pharmaceutical preparations and sea water samples.
本文描述了一种使用汞膜丝网印刷电极作为工作电极，通过差分脉冲阳极溶出伏安法测定三价锑的方法。该方法采用实验设计方法进行了优化。在这些条件下，就残留标准偏差 (RSD) 而言，分析了所构建电极的重复性 (3.81 %) 和再现性 (5.07 %)。三价锑的检测限计算值为 1.27×10(-8) M。获得的线性范围在 0.99 × 10(-8) - 8.26 × 10(-8) M 之间。对溶液中存在的外来离子可能产生的影响进行了分析，并成功地将该方法应用于药物制剂和海水样品中锑含量的测定。
