Development of highly selective and sensitive electrochemical sensor for trace level determination of Cu2+ ions in different biological and Persian Gulf Algae samples

IF 5.4 Q1 CHEMISTRY, ANALYTICAL

Sensing and Bio-Sensing Research Pub Date : 2025-02-01 DOI:10.1016/j.sbsr.2025.100762

Azam Ashenagar , Maryam Abbasi Tarighat , Gholamreza Abdi

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引用次数: 0

Abstract

Herein, a novel electrochemical sensor using carbon paste electrode (CPE) modified with synthetic Schiff base 4,4′-(2,2-dimethylpropane-1,3,diyl)-bis(azan-1-yldene)dipent-2-en-2-ol(DMPDO) and MWCNTs (DMPDO-MWCNT-CPE) was fabricated for determination of Cu²⁺ ions in different samples. The modified CPE electrode was fully characterized with SEM., cyclic voltammetry, differential pulse voltammetry, spectrophotometric analysis and experimental conditions was thoroughly studied. The electrochemical result reveals the DMPDO-MWCNT-CPE electrode exhibits excellent electrochemical performance respect to bare CPE and other construction toward Cu²⁺ ions. The fabricated nano-electrochemical sensor in 0.1 acetate buffer solution (pH 5), 12 % w of Schiff base and KCl electrolyte (0.1 mol L⁻¹) showed linear dynamic ranges 0.050–300.0 μM with detection limits (LODs) of 0.008 μ mol L⁻¹ and limit of quantitation of 0.10 μ mol L⁻¹. Also, with respect to other fabricated structures, it shows a wider dynamic range and lower LOD and LOQ values. Besides, the Cu²⁺ sensor showed strong selectivity compared to other metal ion (e.g., Al³⁺, Zn²⁺, K⁺, Mn²⁺, Ag⁺, Na⁺, Fe²⁺, Mn²⁺), high stability and excellent repeatability. The fabricated sensor was applied for to detect Cu²⁺ ions in some biological, wastewater and Persian Gulf algae samples. The results found with this method were comparable with those obtained with Flame atomic absorption spectrometry.

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来源期刊

Sensing and Bio-Sensing Research Engineering-Electrical and Electronic Engineering

CiteScore

10.70

自引率

3.80%

发文量

审稿时长

87 days

期刊介绍： Sensing and Bio-Sensing Research is an open access journal dedicated to the research, design, development, and application of bio-sensing and sensing technologies. The editors will accept research papers, reviews, field trials, and validation studies that are of significant relevance. These submissions should describe new concepts, enhance understanding of the field, or offer insights into the practical application, manufacturing, and commercialization of bio-sensing and sensing technologies. The journal covers a wide range of topics, including sensing principles and mechanisms, new materials development for transducers and recognition components, fabrication technology, and various types of sensors such as optical, electrochemical, mass-sensitive, gas, biosensors, and more. It also includes environmental, process control, and biomedical applications, signal processing, chemometrics, optoelectronic, mechanical, thermal, and magnetic sensors, as well as interface electronics. Additionally, it covers sensor systems and applications, µTAS (Micro Total Analysis Systems), development of solid-state devices for transducing physical signals, and analytical devices incorporating biological materials.