米托蒽醌在碳糊电极上的吸附溶出行为。

Adsorptive stripping behaviour of mitoxantrone on carbon paste electrodes.

作者信息

Villar J C, García A C, Blanco P T

机构信息

Department of Physical and Analytical Chemistry, University of Oviedo, 33006 Oviedo, Principality of Asturias, Spain.

出版信息

Talanta. 1993 Mar;40(3):325-31. doi: 10.1016/0039-9140(93)80241-i.

DOI:10.1016/0039-9140(93)80241-i

PMID:18965633

Abstract

The electrooxidation of mitoxantrone (MXT) on carbon paste electrodes was studied using voltammetric techniques in adsorption conditions. The analyte was accumulated at the working electrode (a carbon paste electrode) under precisely controlled mass-transport conditions and stripped electrochemically in the same solution. An electrode pretreatment is proposed which shows good reproducibility of the analytical signal (0.81%). The stripping step was studied with alternating current voltammetry providing a linear response in the concentration range 5 x 10(-11) to 7 x 10(-10)M in aqueous samples. Finally, a method using the medium exchange and AC phase-selective adsorptive stripping voltammetry technique was proposed for MXT analysis in urine samples.

摘要

采用伏安法技术，在吸附条件下研究了米托蒽醌（MXT）在碳糊电极上的电氧化。在精确控制传质条件下，将分析物在工作电极（碳糊电极）上富集，并在同一溶液中进行电化学溶出。提出了一种电极预处理方法，该方法显示出良好的分析信号重现性（0.81%）。采用交流伏安法研究溶出步骤，在水样品中浓度范围为5×10⁻¹¹至7×10⁻¹⁰M时提供线性响应。最后，提出了一种采用介质交换和交流相选择性吸附溶出伏安法技术分析尿样中MXT的方法。