Determination of total dissolved iron (Fe) is of great significance for further studying its role in the biochemical cycle of the earth. Herein, a defective carbon black material (BP_defect) was adopted to replace metal-based composites for determination of Fe dissolved in solution via electroanalysis on modified electrode. The effects of solid loading and electrolyte on electrochemical performance were studied. The measurement accuracy of BP_defect-modified electrode was validated by determining Fe(III) standard reference materials. The BP_defect-modified electrode was also applied in Fe analysis in groundwater samples successfully.

中文翻译：

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用有缺陷的炭黑改性电极电分析地下水中的铁

总溶解铁（Fe）的测定对于进一步研究其在地球生化循环中的作用具有重要意义。在此，采用缺陷炭黑材料（BP_缺陷）代替金属基复合材料，在修饰电极上通过电分析测定溶解在溶液中的铁。研究了固体负载和电解质对电化学性能的影响。通过测定 Fe(III) 标准参考物质来验证BP_缺陷修饰电极的测量精度。BP_缺陷修饰电极也成功地应用于地下水样品中的 Fe 分析。