An efficient electrochemical sensor for determination of sulfite in water and soft drinks based on Ce3+-doped CuO nanocomposite

Malakootian, Mohammad; Hamzeh, Sanaz

doi:10.1016/j.jfca.2022.104716

Cited by 17 publications

(5 citation statements)

References 55 publications

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“…To date, many analytical methods have been used for the detection of sulfur dioxide and its two derivatives, such as mass spectrometry, 12 electrochemistry, 13,14 chromatographic methods, 15 and fluorescence methods. [16][17][18][19][20][21] However, these methods have many limitations in applications, such as the need for expensive instrumentation or materials and complex sample preparation processes.…”

Section: Introductionmentioning

confidence: 99%

Determination of bisulfite in food using the Etch-Cu-HCF nanozyme with enhanced polyphenol oxidase-like activity

Wang,

Cheng,

et al. 2024

New J. Chem.

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Section: Introductionmentioning

confidence: 99%

Determination of bisulfite in food using the Etch-Cu-HCF nanozyme with enhanced polyphenol oxidase-like activity

Wang,

Cheng,

et al. 2024

New J. Chem.

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“…Electrochemical sensors have emerged as promising alternatives to conventional analytical methods because of their simplicity, portability, rapid response and low-cost fabrication (Mahmoudi-Moghaddam et al, 2019;Malakootian et al, 2022). In recent years, MIPs have gained significant attention as recognition elements in electrochemical sensors for the selective detection of target molecules (Akbari Javar et al, 2022;Rupar et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A molecular imprinting electrochemical sensor for detection of anticancer drug amsacrine

Zhang,

Zhang

2024

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Purpose The purpose of this study is to develop a molecular imprinting electrochemical sensor for the specific detection of the anticancer drug amsacrine. The sensor used a composite of bacterial cellulose (BC) and silver nanoparticles (AgNPs) as a platform for the immobilization of a molecularly imprinted polymer (MIP) film. The main objective was to enhance the electrochemical properties of the sensor and achieve a high level of selectivity and sensitivity toward amsacrine molecules in complex biological samples. Design/methodology/approach The composite of BC-AgNPs was synthesized and characterized using FTIR, XRD and SEM techniques. The MIP film was molecularly imprinted to selectively bind amsacrine molecules. Electrochemical characterization, including cyclic voltammetry and electrochemical impedance spectroscopy, was performed to evaluate the modified electrode’s conductivity and electron transfer compared to the bare glassy carbon electrode (GCE). Differential pulse voltammetry was used for quantitative detection of amsacrine in the concentration range of 30–110 µM. Findings The developed molecular imprinting electrochemical sensor demonstrated significant improvements in conductivity and electron transfer compared to the bare GCE. The sensor exhibited a linear response to amsacrine concentrations between 30 and 110 µM, with a low limit of detection of 1.51 µM. The electrochemical response of the sensor showed remarkable changes before and after amsacrine binding, indicating the successful imprinting of amsacrine in the MIP film. The sensor displayed excellent selectivity for amsacrine in the presence of interfering substances, and it exhibited good stability and reproducibility. Originality/value This study presents a novel molecular imprinting electrochemical sensor design using a composite of BC and AgNPs as a platform for MIP film immobilization. The incorporation of BC-AgNPs improved the sensor’s electrochemical properties, leading to enhanced sensitivity and selectivity for amsacrine detection. The successful imprinting of amsacrine in the MIP film contributes to the sensor's specificity. The sensor's ability to detect amsacrine in a concentration range relevant to anticancer therapy and its excellent performance in complex sample matrices add significant value to the field of electrochemical sensing for pharmaceutical analysis.

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“…In a similar vein, Malakootian et al achieved precise detection of SO 3 2− in water and soft drinks by doping Ce 3+ into CuO nanocomposites, with a detection limit as low as 0.08 µM. The method demonstrated high sensitivity, good reproducibility, and stability [54]. In general, the enzyme activity of bimetallic nanozymes is superior to that of monometallic nanozymes [55,56].…”

Section: Introductionmentioning

confidence: 99%

Rapid Trace Detection of Sulfite Residue in White Wine Using a Multichannel Colorimetric Nanozyme Sensor

Yue,

Fu,

et al. 2023

Foods

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As a commonly used food additive, sulfite (SO32−) is popular with food manufacturers due to the functions of bleaching, sterilizing, and oxidation resistance. However, excess sulfites can pose a threat to human health. Therefore, it is particularly important to achieve rapid and sensitive detection of SO32−. Herein, a colorimetric sensor was invented for visual, meticulous, and rapid detection of SO32− based on MIL-53(Fe/Mn). Bimetallic nanozyme MIL-53(Fe/Mn) was prepared by a one-pot hydrothermal reaction. The prepared MIL-53(Fe/Mn) can effectively catalyze the oxidation of colorless TMB to a blue oxidation product (oxTMB). The introduction of SO32− causes significant discoloration of the reaction system, gradually transitioning from a visible blue color to colorless. Hence, a sensitive colorimetric sensor for SO32− detection was developed based on the decolorization degree of the detection system. Further, the discoloration was ascribed to the inactivation of nanozyme and the strong reducing ability of SO32−. Under the optimal experimental conditions, there was a good linear relationship between the absorbance at 652 nm and SO32− concentration in the linear range of 0.5–6 μg mL−1 with a limit of detection (LOD) of 0.05 μg mL−1. The developed method was successfully applied to the detection of actual samples of white wine with good accuracy and recovery. Compared to traditional methods, this colorimetric sensor produces similar detection results but significantly reduces the detection time. Compared to traditional methods, this colorimetric sensor can not only reduce the detection costs effectively but also help the food industry maintain quality standards. Strong anti-interference capability, simple operation, and low detection limits ensure the excellent performance of the colorimetric sensor in detecting SO32− in white wine. The combination of a smartphone and a colorimetric analysis application has also greatly facilitated the semi-quantitative, visual on-site detection of SO32−, which has opened up an application prospect of an MIL-53(Fe/Mn)-based detection platform. Our work has indicated a new direction for the detection of SO32− and provided important assurance for food safety.

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An efficient electrochemical sensor for determination of sulfite in water and soft drinks based on Ce3+-doped CuO nanocomposite

Cited by 17 publications

References 55 publications

Determination of bisulfite in food using the Etch-Cu-HCF nanozyme with enhanced polyphenol oxidase-like activity

Determination of bisulfite in food using the Etch-Cu-HCF nanozyme with enhanced polyphenol oxidase-like activity

A molecular imprinting electrochemical sensor for detection of anticancer drug amsacrine

Rapid Trace Detection of Sulfite Residue in White Wine Using a Multichannel Colorimetric Nanozyme Sensor

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