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首页> 外文OA文献 >Electroanalysis of trace manganese via cathodic stripping voltammetry: Exploration of edge plane pyrolytic graphite electrodes for environmental analysis
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Electroanalysis of trace manganese via cathodic stripping voltammetry: Exploration of edge plane pyrolytic graphite electrodes for environmental analysis

机译：阴极溶出伏安法对痕量锰进行电分析：用于环境分析的边缘平面热解石墨电极的探索

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摘要

The determination of trace levels of manganese via cathodic stripping voltammetry at an edge plane pyrolytic graphite electrode (eppge) was evaluated for use in environmental analysis. The response of the eppge is compared with boron-doped diamond electrodes under quiescent conditions where the former is observed to have a three times higher sensitivity. Using this protocol with a stirred accumulation period, a detection limit of 14.2 nmol dm(-3) and a sensitivity of 14.2 Tool dm(-3) A(-1) is achieved with linearity from 25 to 250 nmol dm(-3), based on a 120 seconds accumulation period. The response at a carbon paste electrode is also compared under the same conditions with the eppge found to be superior in terms of sensitivity, detection limits and reproducibility. The efficacy of the protocol utilising the eppge was assessed in the determination of manganese in a certified seawater reference material, NASS-5, from the National Research Council Canada, which was found to be in excellent agreement with the independently verified sample.
机译：评估了通过阴极溶出伏安法在边缘平面热解石墨电极（eppge）上测定的痕量锰，用于环境分析。在静止条件下，将掺杂物与硼掺杂金刚石电极的响应进行了比较，在这种情况下，前者的灵敏度提高了三倍。使用此协议并在搅拌下累积一段时间，可实现线性范围为25至250 nmol dm（-3）的检测限为14.2 nmol dm（-3）和灵敏度为14.2 Tool dm（-3）A（-1）。 ，基于120秒的累积时间。在相同条件下，还对碳糊电极的响应进行了比较，发现在灵敏度，检测限和重现性方面均优于优等。在加拿大国家研究委员会（NASDAQ：NASA）认证的海水参考材料NASS-5中测定锰时，评估了使用eppge的协议的功效，发现该锰与独立验证的样品非常吻合。

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