Polyaniline-chitosan modified on screen-printed carbon electrode for the electrochemical detection of perfluorooctanoic acid

Suhaimi, Nur Farahin; Baharin, Siti Nor Atika; Jamion, Nurul’ Ain; Zain, Zainiharyati Mohd; Sambasevam, Kavirajaa Pandian

doi:10.1016/j.microc.2023.108502

Cited by 29 publications

(7 citation statements)

References 50 publications

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“…Comprehensive tests on different and less corrosive substances such as perfluorooctanoic acid would be useful to see the sensitivity of the sensor and its limitations. The uncontrollable use of perfluorooctanoic acid in household and industrial applications might negatively impact human health and our living environment [4], so realtime monitoring of perfluorooctanoic acid's effects is becoming increasingly important. All this warrants further studies.…”

Section: Resultsmentioning

confidence: 99%

“…The development of a quick, cost-effective, and reliable technique to estimate the concentration of corrosive chemicals has been of technological interest for safety in industry and for the environment for many years [1][2][3][4][5][6][7][8][9][10][11]. Numerous different sensors have been established to achieve this goal, such as a carbon electrode-based sensor for the detection of perfluorooctanoic acid [4], titanium oxide-based semiconductor sensors used to detect formaldehyde in the air [6], and enzymatic conductometric sensors commonly used to detect the amount of pollution in water samples [3,7]. Each different type of sensor carries with it advantages and disadvantages that are useful for different situations.…”

Section: Introductionmentioning

confidence: 99%

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A Disposable Soft Magnetic Ribbon Impedance-Based Sensor for Corrosion Monitoring

et al. 2023

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We present a new approach for the real-time monitoring of chemical corrosion based on radio-frequency (RF) impedance technology and soft ferromagnetic ribbons. The impedance (Z) of a commercial METGLAS® 2714A ribbon was measured in real time for 5 μL of drop-casted HNO3 of various concentrations. Variations in the concentration of the drop-casted acid were assessed by considering the difference in Z (η) with and without the acid treatment. We found a large and linear increase in η (from ~5 to ~35 mΩ) and a large linear decrease in measurement time (from ~240 to 70 s) with increases in acid concentration (from 0.9 to 7.4 Molar), which is promising for the development of disposable chemical sensors for the strength estimation of corrosive chemicals and for the monitoring of time-dependent chemical corrosion processes. Since the ribbon used is commercially available at a low cost and as the measurement system is quick and low power-consuming, the proposed sensor can be used as an easy, quick, and low-cost chemical probe in industry and for environmental hazard management purposes.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Disposable Soft Magnetic Ribbon Impedance-Based Sensor for Corrosion Monitoring

et al. 2023

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“…The resulting linear equations from both ascorbic acid and pH sensing using the integrated reference electrode were similar to those obtained using a commercial silver–silver chloride (Ag|AgCl) reference electrode. Aside from pH sensing, PANI has also been employed in the fabrication of sensors for hazardous compounds such as volatile organic compounds 40 and methanol vapors 41 and in biomedical sensors for the detection of biomolecules such as creatinine 42 and various cancer markers. 43 For instance, Vural et al 44 modified a graphite electrode with a composite of PANI, a gold NP, and a peptide nanotube to immobilize an antiprostate-specific antigen for the detection of prostate specific antigen.…”

Section: Conducting Polymersmentioning

confidence: 99%

Recent Progress in Biomedical Sensors Based on Conducting Polymer Hydrogels

Gamboa

Paulo-Mirasol

Estrany

et al. 2023

ACS Appl. Bio Mater.

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Biosensors are increasingly taking a more active role in health science. The current needs for the constant monitoring of biomedical signals, as well as the growing spending on public health, make it necessary to search for materials with a combination of properties such as biocompatibility, electroactivity, resorption, and high selectivity to certain bioanalytes. Conducting polymer hydrogels seem to be a very promising materials, since they present many of the necessary properties to be used as biosensors. Furthermore, their properties can be shaped and enhanced by designing conductive polymer hydrogel-based composites with more specific functionalities depending on the end application. This work will review the recent state of the art of different biological hydrogels for biosensor applications, discuss the properties of the different components alone and in combination, and reveal their high potential as candidate materials in the fabrication of all-organic diagnostic, wearable, and implantable sensor devices.

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“…Developing a high-sensitivity and specificity biosensor for detecting E2 is necessary for efficient clinical diagnosis. Electrochemical sensing stands out for its high sensitivity, rapid response time, and selectivity in detecting target molecules at low concentrations [ 17 ]. The technology allows for miniaturization and portability, enabling the development of affordable, handheld devices for on-site testing and point-of-care diagnostics.…”

Section: Introductionmentioning

confidence: 99%

Design and Validation of a Short Novel Estradiol Aptamer and Exploration of Its Application in Sensor Technology

Jin,

Cheng,

Kong

et al. 2024

Molecules

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The specific and sensitive detection of 17β-estradiol (E2) is critical for diagnosing and treating numerous diseases, and aptamers have emerged as promising recognition probes for developing detection platforms. However, traditional long-sequence E2 aptamers have demonstrated limited clinical performance due to redundant structures that can affect their stability and recognition ability. There is thus an urgent need to further optimize the structure of the aptamer to build an effective detection platform for E2. In this work, we have designed a novel short aptamer that retains the key binding structure of traditional aptamers to E2 while eliminating the redundant structures. The proposed aptamer was evaluated for its binding properties using microscale thermophoresis, a gold nanoparticle-based colorimetric method, and electrochemical assays. Our results demonstrate that the proposed aptamer has excellent specific recognition ability for E2 and a high affinity with a dissociation constant of 92 nM. Moreover, the aptamer shows great potential as a recognition probe for constructing a highly specific and sensitive clinical estradiol detection platform. The aptamer-based electrochemical sensor enabled the detection of E2 with a linear range between 5 pg mL–1 and 10 ng mL–1 (R2 = 0.973), and the detection capability of a definite low concentration level was 5 pg mL–1 (S/N = 3). Overall, this novel aptamer holds great promise as a valuable tool for future studies on the role of E2 in various physiological and pathological processes and for developing sensitive and specific diagnostic assays for E2 detection in clinical applications.

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Polyaniline-chitosan modified on screen-printed carbon electrode for the electrochemical detection of perfluorooctanoic acid

Cited by 29 publications

References 50 publications

A Disposable Soft Magnetic Ribbon Impedance-Based Sensor for Corrosion Monitoring

A Disposable Soft Magnetic Ribbon Impedance-Based Sensor for Corrosion Monitoring

Recent Progress in Biomedical Sensors Based on Conducting Polymer Hydrogels

Design and Validation of a Short Novel Estradiol Aptamer and Exploration of Its Application in Sensor Technology

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