Separation and detection of trace atrazine from seawater using dummy-template molecularly imprinted solid-phase extraction followed by high-performance liquid chromatography

Chen, Jianlei; Zhao, Wuduo; Tan, Liju; Wang, Junfu; Li, Huiping; Wang, Jiangtao

doi:10.1016/j.marpolbul.2019.110502

Cited by 22 publications

(12 citation statements)

References 28 publications

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“…In order to avoid the effect of template leaching on quantitative analysis, several MIPs have been prepared using dummy templates during the molecular imprinting process. These MIPs have been applied to both chromatographic − and extraction purposes. − …”

Section: Dummy Imprintingmentioning

confidence: 99%

“…Selective DMIPs have also been used as sorbents in several extraction modalities including SPE and DMSPE. Specifically for the extraction of triazine herbicides, two approaches based on the bulk copolymerization of MAA and EDMA in the presence of the dummy template have been reported. , In both cases, cryomazine was used as a dummy template for the formation of specific binding sites for the recognition of cyanazine and atrazine in tomato samples and atrazine in seawater, respectively. Once the DMIPs were prepared, the template and the residual monomers were completely removed using a Soxhlet extraction, and then, the sorbents were packed into cartridges for usage as solid-phase extraction devices.…”

Section: Dummy Imprintingmentioning

confidence: 99%

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Surrogate Imprinting Strategies: Molecular Imprints via Fragments and Dummies

Fresco‐Cala

Mizaikoff

2020

ACS Appl. Polym. Mater.

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There is an increasing need to selectively bind, determine, preconcentrate, or filter compounds frequently present at very low concentration levels in a wide variety of complex matrices. Among other strategies, this need has been addressed by MIPs serving as tailorable synthetic molecular recognition motifs. While the generation of MIPs appears synthetically straightforward, their preparation for the determination of toxic, infectious, rare, or unstable species remains a challenge due to the requirement of using the target species as the actual template during synthesis. A viable alternative is, therefore, replacing the target/template by an appropriate surrogate emulating its size, shape, and surface functionality. Functional polymer materials mimicking biological recognition processes are highly relevant and a vital research field with molecularly imprinted materials at the forefront of this development. Next to the fundamental scientific aspects related to these materials, their practical relevance is reflected in a plethora of applications ranging from biomimetic sensors and assays to selective preconcentration and filtration taking advantage of their selective recognition properties. This review aims to highlight recent advances and innovative strategies toward the development of polymers with selective recognition properties prepared via surrogate templates. Advantages and disadvantages of these strategies are discussed and contrasted by selected examples highlighting the features of such materials addressing specifically such delicate templates.

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Section: Dummy Imprintingmentioning

confidence: 99%

Section: Dummy Imprintingmentioning

confidence: 99%

Surrogate Imprinting Strategies: Molecular Imprints via Fragments and Dummies

Fresco‐Cala

Mizaikoff

2020

ACS Appl. Polym. Mater.

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“…Chen, Zhao, et al (2019) established dummy‐template molecularly imprinted polymers. The DMIPs possessed a great binding capacity and were used as the sorbent of molecular imprinting solid‐phase extraction (MISPE) for determination of trace atrazine.…”

Section: Extraction Techniquesmentioning

confidence: 99%

Analytical methods to analyze pesticides and herbicides

Begum

Xue

2020

Water Environment Research

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This paper reviews studies published in 2019, in the area of analytical techniques for determination of pesticides and herbicides. It should be noted that some of the reports summarized in this review are not directly related to but could potentially be used for water environment studies. Based on different methods, the literatures are organized into six sections, namely extraction methods, electrochemical techniques, spectrophotometric techniques, chemiluminescence and fluorescence methods, chromatographic and mass spectrometric techniques, and biochemical assays.

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“…This material has many advantages, such as stable chemical properties, special selectivity, high affinity, easy preparation, and so on [11]. In recent decades, MIT has been extensively used in chromatographic separation [12], solid-phase extraction [13], catalysis [14], and binding assays and sensors [15]. Obviously, MIT was the outstanding tool for the separation of active components from Traditional Chinese Medicine.…”

Section: Introductionmentioning

confidence: 99%

Molecularly imprinted solid‐phase extraction of Chikusetsu saponin IVa from Panacis majoris Rhizoma

Yang

Sun

et al. 2021

J of Separation Science

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As the main active component of Panacis majoris Rhizoma, Chikusetsu saponin IVa has the activity of anti-oxidation, anti-inflammatory pain, and so on.Obtaining high purity Chikusetsu saponin IVa by simple purification steps is a prerequisite for its deep development. In this paper, the separation and purification of Chikusetsu saponin IVa were studied by molecular imprinting technique. By ultraviolet and visible spectrophotometry and computer molecular simulation, it was concluded that water-soluble 3-(2-carboxyethyl)-1-vinylimidazolium bromide ionic liquid was the best functional monomer compared with acrylic acid and acrylamide. The molecularly imprinted polymers were prepared by precipitation polymerization at 60°C with Chikusetsu saponin IVa as template molecule, 3-(2-carboxyethyl)-1-vinylimidazolium bromide as functional monomer, ethylene glycol dimethacrylate as cross-linker, 2, 2'-azobisisobutyronitrile as initiator, and ethanol as porogen. The properties of molecularly imprinted polymers were studied by scanning electron microscopy, Fourier transform infrared spectroscopy, thermo-gravimetric analysis, nitrogen adsorption/desorption isotherm, and X-ray photoelectron spectroscopy. The maximum adsorption capacity was 171.33 mg/g, and the imprinting factor was 2.6. Finally, the polymers can be successfully used in the purification of Chikusetsu saponin IVa from Panacis majoris Rhizoma through a simple procedure, the content was significantly increased. The recoveries of the spiked samples for the CS-IVa ranged from 94.05 to 99.95% with relative standard deviation values lower than 2.67%. The results showed that the polymers demonstrated good adsorption capacity for Chikusetsu saponin IVa. Meanwhile, the polymers showed great stability and reusability during the application.

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Separation and detection of trace atrazine from seawater using dummy-template molecularly imprinted solid-phase extraction followed by high-performance liquid chromatography

Cited by 22 publications

References 28 publications

Surrogate Imprinting Strategies: Molecular Imprints via Fragments and Dummies

Surrogate Imprinting Strategies: Molecular Imprints via Fragments and Dummies

Analytical methods to analyze pesticides and herbicides

Molecularly imprinted solid‐phase extraction of Chikusetsu saponin IVa from Panacis majoris Rhizoma

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