Preconcentration and determination of pesticides with graphene-modified polymer monolith combined with high performance liquid chromatography

Qi, Ruifang; Jiang, Hao-Bo; Liu, Shuxia; Jia, Qiong

doi:10.1039/c3ay41688g

Cited by 17 publications

(4 citation statements)

References 36 publications

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“…The presence of graphene enhanced the loading capacity of the monolith for glucocorticoids with a complete recovery and enabled to achieve a limit of detection in a range of 0.13–1.93 ng/mL. The same column was later used for the preconcentration and determination of pesticides in fruits and vegetables …”

Section: Monoliths Containing Carbon-based Nanomaterialsmentioning

confidence: 99%

“…The same column was later used for the preconcentration and determination of pesticides in fruits and vegetables. 183 Monolithic discs 3 mm thick and 12 mm in diameter were prepared in a syringe barrel by polymerization of ethylene dimethacrylate in the presence of native graphene. 184 This disc was then placed in a holder and water containing trace amounts of substituted aromatic amines was pumped through it.…”

Section: ■ Functionalization Of Monolithsmentioning

confidence: 99%

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Advances and Recent Trends in the Field of Monolithic Columns for Chromatography

2014

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Section: Monoliths Containing Carbon-based Nanomaterialsmentioning

confidence: 99%

Section: ■ Functionalization Of Monolithsmentioning

confidence: 99%

Advances and Recent Trends in the Field of Monolithic Columns for Chromatography

2014

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“…The most common analytical method used for the trace determination of triazoles, particularly flusilazole residues in water, is chromatography e.g., liquid chromatography-tandem mass spectrometry (LC-MS/MS) (García-Valcárcel and Tadeo, 2011; Fu et al, 2017), high-performance liquid chromatography (HPLC) with ultraviolet light, diode-array detection (DAD), photodiode-array (PDA) detection (Bordagaray et al, 2013, 2014; Qi et al, 2014; Ma et al, 2016; Zhang Y. H. et al, 2016), gas chromatography (GC) with nitrogen-phosphorous detection (NPD) or electron capture detection (ECD) (Lozowicka et al, 2015; Im et al, 2016), and GC-mass spectrometry (GC-MS) (Tseng et al, 2014; Chu et al, 2015), and with tandem MS (GC-MS/MS) (Xu et al, 2013). Nevertheless, these chromatographic techniques necessitate experienced workers, costly devices, and lengthy specimen preparation.…”

Section: Introductionmentioning

confidence: 99%

Supramolecular Fluorescence Probe Based on Twisted Cucurbit[14]uril for Sensing Fungicide Flusilazole

et al. 2019

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The host-guest complex of the common dye, thioflavin T (ThT), and twisted cucurbit[14]uril ( t Q[14]) was selected as a fluorescent probe to determine non-fluorescent triazole fungicides, including flusilazole, azaconazole, triadimefon, tebuconazole, tricyclazole, flutriafol, penconazole, and triadimenol isomer A, in an aqueous solution. The experimental results reveal that the ThT@ t Q[14] probe selectively responded to flusilazole with significant fluorescence quenching and a detection limit of 1.27 × 10 −8 mol/L. In addition, the response mechanism involves not only a cooperation interaction—ThT occupies a side-cavity of the t Q[14] host and the triazole fungicide occupies another side-cavity of the t Q[14] host—but also a competition interaction in which both ThT and the triazole fungicide occupy the side-cavities of the t Q[14] host.

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“…A graphene-modified monolithic column was successfully utilized for purification and enrichment of four pesticides in fruit and vegetable samples. Compared with direct HPLC analysis and preconcentration with unmodified monolith, the incorporation of graphene into the monolith increased the enrichment capacity for the analytes [49]. Spin-columns offer the possibility of developing miniaturized versions of SPE extractions.…”

Section: Preparative Solutionsmentioning

confidence: 99%

Recent Advances and Uses of Monolithic Columns for the Analysis of Residues and Contaminants in Food

et al. 2015

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Abstract:Monolithic columns are gaining interest as excellent substitutes to conventional particle-packed columns. These columns show higher permeability and lower flow resistance than conventional liquid chromatography columns, providing high-throughput performance, resolution and separation in short run times. Monoliths possess also great potential for the clean-up and preparation of complex mixtures. In situ polymerization inside appropriate supports allows the development of several microextraction formats, such as in-tube solid-phase and pipette tip-based extractions. These techniques using porous monoliths offer several advantages, including miniaturization and on-line coupling with analytical instruments. Additionally, monoliths are ideal support media for imprinting template-specific sites, resulting in the so-called molecularly-imprinted monoliths, with ultra-high selectivity. In this review, time-saving LC columns and preparative applications applied to the analysis of residues and contaminants in food in 2010-2014 are described, focusing on recent improvements in design and with emphasis in automated on-line systems and innovative materials and formats.

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Preconcentration and determination of pesticides with graphene-modified polymer monolith combined with high performance liquid chromatography

Cited by 17 publications

References 36 publications

Advances and Recent Trends in the Field of Monolithic Columns for Chromatography

Advances and Recent Trends in the Field of Monolithic Columns for Chromatography

Supramolecular Fluorescence Probe Based on Twisted Cucurbit[14]uril for Sensing Fungicide Flusilazole

Recent Advances and Uses of Monolithic Columns for the Analysis of Residues and Contaminants in Food

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