Development of Voltammetry Analysis Method of Iron Metal Ions by Solid-State Membrane with Carbon Nanotube

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-06-01 DOI:10.22146/ijc.81771

S. Suyanta, Sunarto Sunarto, R. T. Padmaningrum, K. Karlinda, I. Isa, R. Zainul, Q. Fardiyah, Fredy Kurniawan

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Abstract

This work developed a selectively modified electrode for measuring the Fe(II) ions in continuous integration using voltammetry techniques. The study assessed various aspects, such as linearity, scan rate, repeatability, and real sample analysis. The experiment is performed using differential pulse voltammetry (DPV). The findings of the study indicated that the voltammetry method exhibited a regression line of y = 36.507 ln(x) + 990.73, with a correlation value of 0.9627, with an optimum scan rate of 20 mV/s and good repeatability over five times measurement. On the other hand, when comparing the results using the UV-Vis spectrophotometric technique, the regression equation was found to be y = 0.20438x − 0.06987, with a correlation value of 0.99583. Notably, the voltammetry measurement outperformed the UV-Vis method since it allowed analysis of Fe(II) at concentrations up to 6.35 × 10−4 ppm (or 1.00 × 10−11 M), while the UV-vis measurement could only analyze up to 1.5 ppm (or 2.36 × 10−5 M). Consequently, the developed technique proves to be superior to the other methods for the analysis of Fe(II).

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利用碳纳米管固态膜开发金属铁离子的伏安分析方法

这项研究开发了一种选择性改良电极，用于利用伏安法技术测量连续积分中的铁(II)离子。研究对线性度、扫描速率、可重复性和实际样品分析等各个方面进行了评估。实验采用差分脉冲伏安法（DPV）进行。研究结果表明，伏安法的回归线为 y = 36.507 ln(x) + 990.73，相关值为 0.9627，最佳扫描速率为 20 mV/s，在五次测量中重复性良好。另一方面，在使用紫外可见分光光度法比较结果时，发现回归方程为 y = 0.20438x - 0.06987，相关值为 0.99583。值得注意的是，伏安法的测量结果优于紫外可见法，因为伏安法可以分析浓度高达 6.35 × 10-4 ppm（或 1.00 × 10-11 M）的铁（II），而紫外可见法只能分析浓度高达 1.5 ppm（或 2.36 × 10-5 M）的铁（II）。因此，在分析铁（II）方面，所开发的技术证明优于其他方法。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.