Electrochemical detection of N‐nitrosodimethylamine using a molecular imprinted polymer

Cetó, Xavier; Saint, Christopher P.; Chow, Christopher W.K.; Voelcker, Nicolas H.; Prieto‐Simón, Beatriz

doi:10.1016/j.snb.2016.06.136

Cited by 33 publications

(13 citation statements)

References 24 publications

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“…The sensor was not only sensitive with a wide linear range, but also had good regeneration. Similar to Reference [25], when not in use, the sensor can be simply protected in the electrode plastic cap filled with nitrogen, and stored at 4 • C in a refrigerator. The MIP/Au retained about 88% of its initial effect after 60 days of storage.…”

Section: Discussionmentioning

confidence: 99%

“…A small current change of MIP/Au may indicate that some recognition cavities might be blocked after regeneration or can be destroyed after rewashing, and thus they no longer matched the template molecule. Similar to Reference [25], when not in use, the sensor can be simply protected in the electrode plastic cap filled with nitrogen, and stored at 4 °C in a refrigerator. The MIP/Au retained about 88% of its initial effect after 60 days of storage.…”

Section: Regeneration and Stabilitymentioning

confidence: 99%

“…Electropolymerization is one of the methods. It provides some advantages, including thickness control of the polymer layer (which is crucial to the sensing of the analyte), ability to attach the sensor film to electrode surfaces of any shape and size, and compatibility with combinatorial and high-throughput approaches critical for the commercial development of molecular imprinting [21][22][23][24][25][26]. Chitosan (CS) is a non-toxic biopolymer with good biocompatibility that is derived through a series of chemical treatments from the chitin components of the shells of crustaceans.…”

Section: Introductionmentioning

confidence: 99%

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A Facile Approach to Preparing Molecularly Imprinted Chitosan for Detecting 2,4,6-Tribromophenol with a Widely Linear Range

Huang¹,

Lü²,

Wu³

et al. 2017

Environments

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Abstract:The environmental pollution of 2,4,6-tribromophenol (TBP) has attracted attention. Based on an urgent need for the better provision of clean water, in situ determination of TBP is of great importance. Here, a facile and effective approach for detecting TBP is developed, based on coupling molecular imprinting technique with electrodeposition of chitosan (CS) on the gold electrode. The TBP imprinting CS film was fabricated by using CS as functional material and TBP as template molecule. The experiments show that the morphologies and electrochemical properties of the imprinted film sensor was different from non-imprinted film electrode. The current of the imprinted film was linearly proportional to the TBP concentration, with a wide linear range of 1.0 × 10 −7 mol·L −1 to 1.0 × 10 −3 mol·L −1 . By selecting drop-coating method as a reference for controlled trials with the same functional material, the results illustrated that the electrodeposition enjoyed a widely linear range advantage.

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Section: Discussionmentioning

confidence: 99%

Section: Regeneration and Stabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Facile Approach to Preparing Molecularly Imprinted Chitosan for Detecting 2,4,6-Tribromophenol with a Widely Linear Range

Huang¹,

Lü²,

Wu³

et al. 2017

Environments

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“…This approach was first reported by Ho et al, who used PEDOT to immobilize the MIP prepared by precipitation polymerization onto an indium tin oxide (ITO) electrode when developing an amperometric sensor towards morphine [66]. Analogous approach has been later adapted with electrochemically grown films of polypyrrole, either after the drop-casting of the MIP particles [65] or directly from a dispersion containing both the particles, single-wall carbon nanotubes (SWCNTs) and pyrrole [67].…”

Section: Entrapment Onto Electrode Surfacementioning

confidence: 99%

Molecularly imprinted polymers - towards electrochemical sensors and electronic tongues

2021

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Molecularly imprinted polymers (MIPs) are artificially synthesized materials to mimic the molecular recognition process of biological macromolecules such as substrate-enzyme or antigen-antibody. The combination of these biomimetic materials with electrochemical techniques has allowed the development of advanced sensing devices, which significantly improve the performance of bare or catalyst-modified sensors, being able to unleash new applications. However, despite the high selectivity that MIPs exhibit, those can still show some cross-response towards other compounds, especially with chemically analogous (bio)molecules. Thus, the combination of MIPs with chemometric methods opens the room for the development of what could be considered a new type of electronic tongues, i.e. sensor array systems, based on its usage. In this direction, this review provides an overview of the more common synthetic approaches, as well as the strategies that can be used to achieve the integration of MIPs and electrochemical sensors, followed by some recent examples over different areas in order to illustrate the potential of such combination in very diverse applications.

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“…, metal complexes including porphyrin36 (Figure 1b), enzymes like horseradish peroxidase (HRP) 41,68 and phthalocyanine42 , and molecular imprinted polymers (MIPs)49,76 (Figure 1c)have been applied as recognition molecules for electrochemical determination of various DBPs in water. FromTable 2 (28 out of 40 literatures), the application of redox proteins was of particular dominant as compared with other recognition mechanism.…”

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confidence: 99%

Recent Advances on Electrochemical Sensors for the Detection of Organic Disinfection Byproducts in Water

et al. 2019

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Irreversible organ damage or even death frequently occurs when humans or animals unconsciously drink contaminated water. Therefore, in many countries drinking water is disinfected to ensure harmful pathogens are removed from drinking water. If upstream water treatment prior to disinfection is not adequate, disinfection by-products (DBPs) can be formed. DBPs can exist as wide variety of compounds, but up till now, only several typical compounds have drinking water standards attributed to them. However, it is apparent that the range of DBPs present in water can comprise of hundreds of compounds, some of which are at high enough concentrations that can be toxic or potentially carcinogenic. Hence, it becomes increasingly significant and urgent to develop an accessible, affordable and durable sensing platform for a broader range and more sensitive detection of DBPs. Compared with well-established laboratory detection techniques, electrochemical sensing has been identified as a promising alternative that will provide rapid, affordable and sensitive DBPs monitoring in remote water sources. Therefore, this article provides a review on current state-of-the-art development (within last decade) in electrochemical sensing to detect organic DBPs in water, which covered three major aspects: (1) recognition mechanism, (2) electrodes with signal amplification, and (3) signal read-out techniques. Moreover, comprehensive quality assessments on electrochemical biosensors, including linear detection range, limit of detection (LoD) and recovery, have also been summarized.

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Electrochemical detection of N‐nitrosodimethylamine using a molecular imprinted polymer

Cited by 33 publications

References 24 publications

A Facile Approach to Preparing Molecularly Imprinted Chitosan for Detecting 2,4,6-Tribromophenol with a Widely Linear Range

A Facile Approach to Preparing Molecularly Imprinted Chitosan for Detecting 2,4,6-Tribromophenol with a Widely Linear Range

Molecularly imprinted polymers - towards electrochemical sensors and electronic tongues

Recent Advances on Electrochemical Sensors for the Detection of Organic Disinfection Byproducts in Water

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