Novel potentiometric carbon paste electrodes for trace detection of uranyl(II) ions in petroleum water samples

Q1 Earth and Planetary Sciences Egyptian Journal of Petroleum Pub Date : 2023-09-05 DOI:10.1016/j.ejpe.2023.08.004

Tamer A. Ali , Zeinab F. Akl , Gehad G. Mohamed

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Abstract

Two different phosphine sulfide derivatives have been explored as electroactive materials to modify carbon paste electrodes for the accurate detection of uranyl(II) ions. The optimized electrodes based on triphenylphosphine sulfide (L¹) and triisobutylphosphine sulfide (L²) responded linearly towards uranyl(II) ions within the range of 1.0 × 10^-7 – 1.0 × 10^-1 M. Good sensitivity (29.32 ± 0.53 and 27.99 ± 0.61 mV per decade) and detection capability up to 7.9 × 10^-8 and 1.0 × 10^-7 M uranyl(II) were observed for L¹- and L²-based electrodes, respectively. The effect of solution temperature on uranyl(II) determination was studied within 10–60 °C. Selectivity studies showed that the electrodes are capable to discriminate uranyl(II) ions over a large number of possible co-existing inorganic interferents. Moreover, they exhibited speedy response, thermal and long-term stability, and significant reusability. Petroleum water samples spiked with uranyl(II) ions were analyzed utilizing the developed electrodes where good recovery and accuracy were achieved, demonstrating the real-life applicability of the developed electrodes.

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新型电位法碳糊电极痕量检测石油水样中铀酰(II)离子

研究了两种不同的硫化氢衍生物作为电活性材料修饰碳糊电极，用于精确检测铀酰(II)离子。基于三苯基硫化氢(L1)和三异丁基硫化氢(L2)的优化电极对铀酰(II)离子在1.0 × 10-7 ~ 1.0 × 10-1 M范围内线性响应，L1和L2电极的灵敏度分别为29.32±0.53和27.99±0.61 mV / 10年，检测能力分别为7.9 × 10-8和1.0 × 10-7 M。在10 ~ 60℃范围内研究了溶液温度对铀酰(II)测定的影响。选择性研究表明，电极能够在大量可能共存的无机干扰物中区分铀酰(II)离子。此外，它们还表现出快速响应、热稳定性和长期稳定性以及显著的可重用性。利用开发的电极对加入铀酰(II)离子的石油水样进行了分析，获得了良好的回收率和准确性，证明了开发的电极在现实生活中的适用性。

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来源期刊

Egyptian Journal of Petroleum Earth and Planetary Sciences-Geochemistry and Petrology

CiteScore

7.70

自引率

0.00%

发文量

审稿时长

84 days

期刊介绍： Egyptian Journal of Petroleum is addressed to the fields of crude oil, natural gas, energy and related subjects. Its objective is to serve as a forum for research and development covering the following areas: • Sedimentation and petroleum exploration. • Production. • Analysis and testing. • Chemistry and technology of petroleum and natural gas. • Refining and processing. • Catalysis. • Applications and petrochemicals. It also publishes original research papers and reviews in areas relating to synthetic fuels and lubricants - pollution - corrosion - alternate sources of energy - gasification, liquefaction and geology of coal - tar sands and oil shale - biomass as a source of renewable energy. To meet with these requirements the Egyptian Journal of Petroleum welcomes manuscripts and review papers reporting on the state-of-the-art in the aforementioned topics. The Egyptian Journal of Petroleum is also willing to publish the proceedings of petroleum and energy related conferences in a single volume form.