A novel molecularly imprinted polymer composite based on polyaniline nanoparticles as sensitive sensors for parathion detection in the field

Liang, Ying; Wang, Hongmei; Xu, Yun; Pan, Hongzhi; Guo, Keyu; Zhang, Ying; Chen, Yaqiong; Liu, Dezhi; Zhang, Yu; Yao, Chunxia; Yu, Yanyan; Shi, Guoyue

doi:10.1016/j.foodcont.2021.108638

Cited by 24 publications

(7 citation statements)

References 33 publications

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“…This ensured the presence of accessible binding sites at the surface, while also introducing the desired electrochemical properties into the sensing material. The resulting FUN-PANI-MIP films allowed for fast and selective voltametric detection of the analyte, which was in good agreement with results obtained by HPLC [142].…”

Section: Blending Mips With Conductive Polymerssupporting

confidence: 87%

“…Organophosphate pesticides are widely used to limit infestations on agricultural products. Liang et al prepared a sensor for parathion by imprinting the pesticide on functionalized PANI nanoparticles, which made it possible to detect it in vegetable samples [142] (Table 5). Prometryn is a triazine herbicide commonly used for controlling weeds and algae in aquaculture.…”

Section: Food Safetymentioning

confidence: 99%

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Conductive Molecularly Imprinted Polymers (cMIPs): Rising and Versatile Key Elements in Chemical Sensing

et al. 2023

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Molecularly imprinted polymers (MIPs) have proven useful as receptor materials in chemical sensing and have been reported for a wide range of applications. Based on their simplicity and stability compared to other receptor types, they bear huge application potential related to ongoing digitalization. This is the case especially for conductive molecularly imprinted polymers (cMIPs), which allow easy connection to commercially available sensing platforms; thus, they do not require complex measuring setups. This review provides an overview of the different synthetic approaches toward cMIPs and the obtained limit of detections (LODs) with different transducing systems. In addition, it presents and discusses their use in different application areas to provide a detailed overview of the challenges and possibilities related to cMIP-based sensing systems.

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Section: Blending Mips With Conductive Polymerssupporting

confidence: 87%

Section: Food Safetymentioning

confidence: 99%

Conductive Molecularly Imprinted Polymers (cMIPs): Rising and Versatile Key Elements in Chemical Sensing

et al. 2023

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“…They possess many unique features such as easy preparation, cost-efficient, good stability, and reusability [ 14 ]. Due to these superior characteristics, MIPs as recognition elements have been combined with various electrochemical techniques for detecting various small molecules such as antibiotics [ 15 ], pesticides [ 16 ], and mycotoxins [ 17 ]. The efficient recognition of MIPs towards the analyte (often the template) depends largely on the interaction (covalent or non-covalent) between a template and a functional monomer [ 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Rapid and Sensitive Detection of Sulfamethizole Using a Reusable Molecularly Imprinted Electrochemical Sensor

Kong

et al. 2023

Foods

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Efficient methods for monitoring sulfonamides (SAs) in water and animal-source foods are of great importance to achieve environmental safety and protect human health. Here, we demonstrate a reusable and label-free electrochemical sensor for the rapid and sensitive detection of sulfamethizole based on an electropolymerized molecularly imprinted polymer (MIP) film as the recognition layer. To achieve effective recognition, monomer screening among four kinds of 3-substituted thiophenes was performed by computational simulation and subsequent experimental evaluation, and 3-thiopheneethanol was finally selected. MIP synthesis is very fast and green, and can be in situ fabricated on the transducer surface within 30 min in an aqueous solution. The preparation process of the MIP was characterized by electrochemical techniques. Various parameters affecting MIP fabrication and its recognition response were investigated in detail. Under optimized experimental conditions, good linearity in the range of 0.001−10 μM and a low determination limit of 0.18 nM were achieved for sulfamethizole. The sensor showed excellent selectivity, which can distinguish between structurally similar SAs. In addition, the sensor displayed good reusability and stability. Even after 7 days of storage, or being reused 7 times, higher than 90% of the initial determination signals were retained. The practical applicability of the sensor was also demonstrated in spiked water and milk samples at the nM determination level with satisfactory recoveries. Compared to relevant methods for SAs, this sensor is more convenient, rapid, economical, and eco-friendly, and had comparable or even higher sensitivity, which offered a simple and efficient method for SA detection.

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“…Among the various detection methods, electrochemical methods have received extensive attention due to their fast detection speeds, ease of operation, and low detection costs [ 5 , 6 , 7 ]. For the sake of achieving high specificity in detection, some recognition elements with specific recognition capabilities such as antibodies [ 8 , 9 ], aptamers [ 10 , 11 ], enzymes [ 12 ], and molecularly imprinted polymers (MIPs) [ 13 , 14 , 15 ] have been extensively utilized. Among the many recognition elements, MIPs are favored by many researchers because of their cost-effectiveness and high stability.…”

Section: Introductionmentioning

confidence: 99%

Novel Dual-Signal SiO2-COOH@MIPs Electrochemical Sensor for Highly Sensitive Detection of Chloramphenicol in Milk

Geng

Liu

Huang

et al. 2023

Sensors

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In view of the great threat of chloramphenicol (CAP) to human health and the fact that a few producers have illegally used CAP in the food production process to seek economic benefits in disregard of laws and regulations and consumer health, we urgently need a detection method with convenient operation, rapid response, and high sensitivity capabilities to detect CAP in food to ensure people’s health. Herein, a molecularly imprinted polymer (MIP) electrochemical sensor based on a dual-signal strategy was designed for the highly sensitive analysis of CAP in milk. The NiFe Prussian blue analog (NiFe-PBA) and SnS2 nanoflowers were modified successively on the electrode surface to obtain dual signals from [Fe(CN)6]3−/4− at 0.2V and NiFe-PBA at 0.5 V. SiO2-COOH@MIPs that could specifically recognize CAP were synthesized via thermal polymerization using carboxylated silica microspheres (SiO2-COOH) as carriers. When the CAP was adsorbed by SiO2-COOH@MIPs, the above two oxidation peak currents decreased at the same time, allowing the double-signal analysis. The SiO2-COOH@MIPs/SnS2/NiFe-PBA/GCE sensor used for determining CAP was successfully prepared. The sensor utilized the interactions of various nanomaterials to achieve high-sensitivity dual-signal detection, which had certain innovative significance. At the same time, the MIPs were synthesized using a surface molecular imprinting technology, which could omit the time of polymerization and elution and met the requirements for rapid detection. After optimizing the experimental conditions, the detection range of the sensor was 10−8 g/L–10−2 g/L and the limit of detection reached 3.3 × 10−9 g/L (S/N = 3). The sensor had satisfactory specificity, reproducibility, and stability, and was successfully applied to the detection of real milk samples.

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A novel molecularly imprinted polymer composite based on polyaniline nanoparticles as sensitive sensors for parathion detection in the field

Cited by 24 publications

References 33 publications

Conductive Molecularly Imprinted Polymers (cMIPs): Rising and Versatile Key Elements in Chemical Sensing

Conductive Molecularly Imprinted Polymers (cMIPs): Rising and Versatile Key Elements in Chemical Sensing

Rapid and Sensitive Detection of Sulfamethizole Using a Reusable Molecularly Imprinted Electrochemical Sensor

Novel Dual-Signal SiO2-COOH@MIPs Electrochemical Sensor for Highly Sensitive Detection of Chloramphenicol in Milk

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