Design of hyper-cross-linked polymers with tunable polarity for effective preconcentration of aflatoxins in grain

Wang, Qianqian; Zhang, Shuaihua; Li, Zhi; Wang, Zhi; Wang, Chun; Alshehri, Saad M.; Bandô, Yoshio; Yamauchi, Yusuke; Wu, Qiuhua

doi:10.1016/j.cej.2022.139544

Cited by 44 publications

(13 citation statements)

References 54 publications

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“…The C 1s spectrum was deconvoluted into four peaks (Figure b), corresponding to CC (C–C), CN, C–N, and C–F, and their binding energies were 284.3, 287.8, 285.0, and 286.1 eV, respectively. , The N 1s spectrum was deconvoluted into two peaks of CN–C (399.3 eV) and NH– (400.0 eV) (Figure c) . The XPS spectrum of O 1s (Figure d) exhibited two peaks at 529.7 and 531.2 eV, which were attributed to Fe–O and Fe–O–C, respectively . The appearance of Fe–O–C confirmed that Fe 3 O 4 was covalently bonded with F-POP through the Fe–O–C bond .…”

Section: Resultsmentioning

confidence: 99%

“…32 The XPS spectrum of O 1s (Figure 4d) exhibited two peaks at 529.7 and 531.2 eV, which were attributed to Fe−O and Fe−O−C, respectively. 38 The appearance of Fe−O−C confirmed that Fe 3 O 4 was covalently bonded with F-POP through the Fe−O−C bond. 38 The C−F in the −CF 3 group appeared at 689 eV (Figure 4e).…”

Section: Characterization Of M-f-popmentioning

confidence: 90%

“…38 The appearance of Fe−O−C confirmed that Fe 3 O 4 was covalently bonded with F-POP through the Fe−O−C bond. 38 The C−F in the −CF 3 group appeared at 689 eV (Figure 4e). 39 In the Fe 2p spectrum (Figure 4f), the peaks at 713.3 and 726.9 eV belonged to Fe 2p 3/2 and Fe 2p 1/2 , respectively, related to Fe 3 O 4 , 40 while the other two peaks (710.7 and 724.2 eV) and two satellite peaks (718.9 and 732.8 eV) can be attributed to α-Fe 2 O 3 .…”

Section: Characterization Of M-f-popmentioning

confidence: 90%

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Fluorine-Functionalized Triazine-Based Porous Organic Polymers for the Efficient Adsorption of Aflatoxins

Yang

Zhou

et al. 2023

J. Agric. Food Chem.

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Food safety issue caused by aflatoxins has aroused widespread concern in society. Herein, a novel fluorine-functionalized triazine-based porous organic polymer (F-POP) was developed for the first time by the simple condensation polymerization of 2,2′-bis(trifluoromethyl)benzidine and cyanuric chloride. With in-built fluorine functional group (F) and imine group (−NH−), F-POP displayed significantly superior adsorption ability for aflatoxins, outperforming fluorine-free POP due to the multiple interaction mechanisms of hydrogen bond, F–O interaction, π–π interaction, F−π interaction, and hydrophobic interaction. Thus, magnetic F-POP was prepared by introducing Fe3O4 into F-POP and then utilized as a magnetic sorbent for the extraction of trace aflatoxins in peanut and rice samples prior to high-performance liquid chromatography-fluorescence detection. Under the optimal conditions, the proposed method presented high sensitivity with the limit of detections at 0.005–0.15 ng g–1. F-POP also exhibited outstanding adsorption capability for many other organic pollutants, revealing its great potential for analysis or adsorption applications.

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Section: Resultsmentioning

confidence: 99%

Section: Characterization Of M-f-popmentioning

confidence: 90%

Section: Characterization Of M-f-popmentioning

confidence: 90%

See 1 more Smart Citation

Fluorine-Functionalized Triazine-Based Porous Organic Polymers for the Efficient Adsorption of Aflatoxins

Yang

Zhou

et al. 2023

J. Agric. Food Chem.

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“…With the emergence of new technologies and novel materials, sample pretreatment methods are also developing. Table S2 [ 11 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , …”

Section: Sample Pretreatment Methodsmentioning

confidence: 99%

“…Among them, magnetic adsorbent is the most important part in MSPE, which directly determines the extraction efficiency and time. Therefore, more and more researchers focus on the synthesis of novel and efficient magnetic adsorbents, such as magnetic covalent organic frameworks (MCOFs) (Fe 3 O 4 /COF-TpBD [ 41 ], Fe 3 O 4 @COF(TFPB-PPD) [ 23 ]), magnetic metal organic frameworks (MOFs) (MIL-101(Cr)@Fe 3 O 4 [ 45 ], Fe 3 O 4 @UiO-66-NH 2 @MON [ 24 ]), magnetic carbon nanotubes (M-CNTs) (PDA@Fe 3 O 4 -MWCNTs [ 64 ], MWCNT-MNPs [ 42 ]), magnetic hyper-crosslinked polymers (MHCP) ((MHCP-TPE) [ 21 ], M-OP10-DCX [ 22 ]), and others (Fe 3 O 4 @SiO 2 @TiO 2 -APTMS-CPA [ 82 ], Fe 3 O 4 @POSS@PIL-PSt [ 33 ]). The main analytical parameters of MSPE on the pretreatment of mycotoxins is shown in Table 2 .…”

Section: Sample Pretreatment Methodsmentioning

confidence: 99%

Recent Insights into Sample Pretreatment Methods for Mycotoxins in Different Food Matrices: A Critical Review on Novel Materials

Zhang

Zhou

et al. 2023

Toxins

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Mycotoxins pollution is a global concern, and can pose a serious threat to human health. People and livestock eating contaminated food will encounter acute and chronic poisoning symptoms, such as carcinogenicity, acute hepatitis, and a weakened immune system. In order to prevent or reduce the exposure of human beings and livestock to mycotoxins, it is necessary to screen mycotoxins in different foods efficiently, sensitively, and selectively. Proper sample preparation is very important for the separation, purification, and enrichment of mycotoxins from complex matrices. This review provides a comprehensive summary of mycotoxins pretreatment methods since 2017, including traditionally used methods, solid-phase extraction (SPE)-based methods, liquid-liquid extraction (LLE)-based methods, matrix solid phase dispersion (MSPD), QuEChERS, and so on. The novel materials and cutting-edge technologies are systematically and comprehensively summarized. Moreover, we discuss and compare the pros and cons of different pretreatment methods and suggest a prospect.

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Dispersive solid‐phase extraction of alkaloids and polyphenols using borate hypercrosslinked polymers

Liu

Wang

et al. 2023

J of Separation Science

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In this study, a borate hyper-crosslinked polymer was synthesized by crosslinking 1-naphthalene boric acid and dimethoxymethane via the Friedel-Crafts reaction. The prepared polymer exhibits excellent adsorption performance toward alkaloids and polyphenols with maximum adsorption capacities ranging from 25.07 to 39.60 mg/g. Adsorption kinetics and isotherms model results indicated the adsorption was a monolayer and chemical process. Under the optimal extraction conditions, a sensitive method was established for the simultaneous quantification of alkaloids and polyphenols in green tea and Coptis chinensis by coupling with the proposed sorbent and ultra-high performance liquid chromatography detection. The proposed method exhibited a wide linear range of 5.0-5000.0 ng/ml with R 2 ≥ 0.99, a low limit of detection (0.66-11.25 ng/ml), and satisfactory recoveries (81.2%-117.4%). This work provides a simple and convenient candidate for the sensitive determination of alkaloids and polyphenols in green tea and complex herbal products.

show abstract

Design of hyper-cross-linked polymers with tunable polarity for effective preconcentration of aflatoxins in grain

Cited by 44 publications

References 54 publications

Fluorine-Functionalized Triazine-Based Porous Organic Polymers for the Efficient Adsorption of Aflatoxins

Fluorine-Functionalized Triazine-Based Porous Organic Polymers for the Efficient Adsorption of Aflatoxins

Recent Insights into Sample Pretreatment Methods for Mycotoxins in Different Food Matrices: A Critical Review on Novel Materials

Dispersive solid‐phase extraction of alkaloids and polyphenols using borate hypercrosslinked polymers

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