Disposable Screen-Printed Microchip Based on Nanoparticles Sensitive Membrane for Potentiometric Determination of Lead

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-03-13 DOI:10.1155/2024/7610614

Majed Alrobaian, Munerah Alfadhel, Sayed Zayed, Mohammad AlDosari, Hassan Arida

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Abstract

Realization of screen-printed disposable microchip based on organic membrane sensitive layer highly responsive to lead has been demonstrated for the first time. Fabrication, potentiometric characterization and analytical application of the novel microchip have been reported. A sensitive layer comprises TiO₂ nanoparticles and multiwalled carbon nanotubes “MWCNTs” composite incorporated in PVC membrane has uploaded on the plastic screen-printed microelectrode substrate surface using novel protocol. The new chip provided a linear behavior for Pb²⁺ ions over the lead concentration range of 1 × 10⁻⁶–1 × 10⁻¹ mole L⁻¹ with super Nernstian sensitivity (49 mV), relatively long life span (>4 months), and a fast response time (10 s). The advantages showed by the microchip include simple fabrication, small size, mass production, cost effectiveness, and automation and integration feasibility. The realized new microchip has been successfully utilized in the quantification of some lead (II) samples with average recovery of 101.9% and the RDS was <3.

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基于纳米颗粒敏感膜的一次性丝网印刷微芯片用于铅的电位测定

首次实现了基于有机膜敏感层的丝网印刷一次性微芯片对铅的高灵敏度反应。该新型微芯片的制作、电位表征和分析应用已被报道。采用新颖的方案，在塑料丝网印刷微电极基底表面上传了由聚氯乙烯膜中的二氧化钛纳米粒子和多壁碳纳米管（MWCNTs）复合材料组成的敏感层。新芯片在 1 × 10-6-1 × 10-1 摩尔 L-1 的铅浓度范围内对 Pb2+ 离子呈线性关系，具有超强的 Nernstian 灵敏度（49 mV）、相对较长的使用寿命（4 个月）和快速响应时间（10 秒）。该芯片具有制作简单、体积小、可批量生产、成本效益高、可实现自动化和集成等优点。新型芯片已成功用于一些铅（II）样品的定量分析，平均回收率为 101.9%，RDS 为 3。

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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.

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