Biosensors-Basel
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2023
·Vol. 13
·期 10
·919
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IF 5.4
Wenhui Li,Xuecheng Zhang,Haojie Zhang,Cheng Zhang,Yingjie Chen,Cong Li,Yonghong Hu,Xiaoping Yu,Biao Zhang,Xiaodong Lin
Plasticizers are a type of toxic substance that may remain in food, posing significant health risks including carcinogenic, teratogenic, mutagenic, and other adverse effects. In this study, a novel strategy was employed by combining Pt@Au nanozymes with high catalytic properties to created two catalytic signal probes, designated as Pt@Au@Ab1 and Pt@Au@Ab2, specifically designed for the detection of dimethyl phthalate (DMP) and dibutyl phthalate (DBP). These catalytic signal probes served as the foundation for the development of a colorimetric immunoassay, enabling the simultaneous detection of both DMP and DBP. The colorimetric immunoassay is capable of detecting DMP in the range of 0.5–100 μg/L with a limit of detection as low as 0.1 μg/L and DBP in the range of 1–32 μg/L with a low limit of detection of 0.5 μg/L. The developed immunoassay can be used for the determination of the DMP and DBP in baijiu and plastic bottled drinks. The recovery rate is in the range of 96.4% and 100.5% and the coefficient of variation is between 1.0% and 7.2%. This innovative colorimetric immunoassay offers a robust tool for the simultaneous quantification of DMP and DBP in real samples.Keywords:colorimetric immunoassay;dimethyl phthalate (DMP);dibutyl phthalate (DBP);Pt@Au nanozyme;two-component simultaneous detection
研究领域:
环境科学
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分析化学
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食品安全检测
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DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2022
·
IF 3.119
Zhiyong Su,Xin Guo,Siqi Jiang,Jisheng Li,Yangyang Xin,Shuai Zhang,Yufeng Hu,Zhichang Liu
This work focuses on a new aqueous biphasic system (ABS) composed of hydrophilic ionic liquids (1,3-dimethylimidazole phosphate dimethyl, [Mmim][DMP]), salts (K3PO4·3H2O or K2CO3), and water. Liquid–liquid equilibrium (LLE) data for the ABS have been determined experimentally at T = 298.15 K. The binodal curves were fitted to the Merchuk, Pirdashti, and Jayapal equations. The order K3PO4·3H2O > K2CO3 of recovery efficiency may be related to the Gibbs energy of hydration of the anions, the molar entropy of hydration of the anions, and the Hofmeister series for the strength of the kosmotropic salts, and the strength of [Mmim][DMP]–H2O interactions and salt–H2O interactions determined the phase ratio of the ABS. The effects of the anions structure on the phase equilibrium were investigated by Gaussian 09 software. It was found that the salting-out ability of different salts could be promoted by the increase of the anion valence of salt which can hydrate more water molecules, and the greater the binding energy of the salt with a single water molecule is, the easier it is for the salt to combine with water to form an ABS. To sum up, [Mmim][DMP] could be recovered from aqueous solution using a new ABS, and the recovery efficiency could reach 98.56%. This proposed method can be used as an effective way to recycle [Mmim][DMP] from aqueous solutions.
研究领域:
化学工程
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材料科学
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DOI
高影响因子
ACS Omega
·
2019
·
IF 2.584
Jinjuan Xue,Zhengrong Zhu,Yuqing Zong,Chengjuan Huang,Mingxin Wang
This study investigates the degradation of dimethyl phthalate (DMP) with hydrogen peroxide and ferrate (Fe(VI)) under various reaction conditions. The results showed that the optimum conditions for dimethyl phthalate removal from water were as follows: (a) pH 7.0 and (b) the original molar ratio of [Fe(VI)]/[H2O2]/[DMP] equal to 10:2:1. Under the optimum conditions, the degradation rate of DMP can reach 89.7% in 360 min. Furthermore, 2,5-dihydroxybenzaldehyde, isophthalic acid, 2-ethylhexanol, oxalic acid, 2,6-dihydroxybenzoic acid, 2,6-dihydroxybenzaldehyde, 2,5-dihydroxybenzoic acid, and monomethyl phthalate were identified as the degradation intermediates, and degradation pathways were proposed.
研究领域:
环境化学
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水处理
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高级氧化过程
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DOI
高影响因子
FOOD CHEMISTRY
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2020
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IF 6.306
Chenchen Song,Yanhao Zhang,Xinglin Li,Gangfeng Ouyang,Jiting Cui,Ling Zhang,Ajuan Yu,Shusheng Zhang,Yuanyuan Cui
A novel copper hydroxy phosphate@MOF composite DMP-Cu decorated by 2, 5-dimercapto-1, 3, 4-thiadiazol was facilely prepared and characterized. A dispersive SPE strategy using DMP-Cu as adsorbent combined with atomic fluorescence spectroscopy was developed for the selective capture of trace total mercury in rice sample. The adsorption mechanism showed that the Hg 2+ removal process was fitted with pseudo second-order kinetics and the Langmuir adsorption model. The adsorbent was easy to be regenerated and the maximum adsorption capacity for the removal of Hg 2+ was 249.5 mg g −1 at the optimal pH of 4. X-ray photoelectron spectroscopy and Raman spectra verified the selective and strong interaction between Hg 2+ and thiol/nitrogen-containing functional groups of DMTZ on DMP-Cu. The trace total mercury in rice samples was determined with detection limit of 0.0125 ng mL −1 and relative standard deviation below 6%. The high recoveries were obtained in range of 98.8–109% for the spiked rice samples.
研究领域:
分析化学
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环境科学
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DOI
PubMed
高影响因子
DALTON TRANSACTIONS
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2023
·Vol. 52
·期 23
·8142-8154
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IF 4
You-Hui Zhao,Hai-Yan Li,David James Young,Xiangqian Cao,Da-Liang Zhu,Zhi-Gang Ren,Hong-Xi Li
Earth-abundant copper(I) coordination complexes of an imine-phosphine and a diimine have been developed as visible-light photocatalysts. Reaction of [Cu(MeCN)4]BF4 with hetero-bidentate phosphinopyrazole (phpz) ligand R1R2C3HN2PPh3 (R1 = R2 = H (1a); R1 = H, R2 = Me (1b); R1 = H, R2 = Ph (1c); R1 = R2 = Me (1d)) and 2,9-dimethyl-1,10-phenanthroline (dmp) gave four heteroleptic bis-chelate Cu(I) complexes [Cu(dmp)(R1R2C3HN2PPh3)]BF4 (R1 = R2 = H (2a); R1 = H, R2 = Me (2b); R1 = H, R2 = Ph (2c); R1 = R2 = Me (2d)) with distorted tetrahedral geometries. Complexes 2a–2d exhibited broad absorption in the visible spectrum and could facilitate photochemical intermolecular atom-transfer radical addition reactions of CBr4, or CCl3Br, CHI3 to styrenes in yields up to 91% and with a broad substrate scope. The absorption, emission, redox potential and photocatalytic activity were dependent on the substituents on the phpz ligand. Mechanistic studies supported an atom-transfer radical addition (ATRA) mechanism.
研究领域:
无机化学
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光化学
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催化
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DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2017
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IF 1.174
Chunyuan Wu,Youwei Cheng,Lijun Wang,Xi Li
The binary solid–liquid equilibrium of Dimethyl Terephthalate (DMT), Dimethyl Isophthalate (DMI) and Dimethyl Phthalate (DMP) was investigated by experiment and differential scanning calorimetry (DSC). The result demonstrated DMT/DMI and DMT/DMP systems are eutectic while DMI/DMP is a solid-solution system. The eutectic temperature of DMT/DMI system is 336.7 K and that of DMT/DMP is 271.1 K. Furthermore, a classical solid–liquid phase equilibrium model was used to fit the experimental data of the eutectic systems of DMT/DMI and DMT/DMP and the theoretical model could describe the eutectic solid–liquid phase diagrams properly.
研究领域:
化学工程
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热力学
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分离过程
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材料科学
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2021
·
IF 6.165
Kun Yue,Guowei Zhou
Isobaric vapor–liquid equilibrium data for the ternary system of ethyl acetate + ethanol + ionic liquids (ILs) were obtained at 101.3 kPa. The ILs used were 1,3-dimethylimidazolium dimethylphosphate ([MMIM][DMP]) and 1-octyl-3-methylimidazolium hexafluorophosphate ([OMIM][PF 6 ]). The vapor–liquid equilibrium data were correlated using the nonrandom two-liquid model, and the results were well fitted with the experimental data, showing that the minimum concentration (mole fraction) of [MMIM][DMP] and [OMIM][PF 6 ] to break the azeotrope of ethyl acetate + ethanol system was 0.048 and 0.141, respectively. [MMIM][DMP] brought about a monotonous “salting-out” effect on ethyl acetate, while [OMIM][PF 6 ] brought about a crossover effect containing “salting-in” and “salting-out” on ethyl acetate. Finally, polarity of solvents and ions dissociated by ILs was analyzed through the σ-profiles, indicating the mechanism of various separation results using these two ILs. It is suggested that [MMIM][DMP] and [OMIM][PF 6 ] can be used as good candidate entrainers in separating ethyl acetate and ethanol.
研究领域:
化学工程
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物理化学
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DOI
高影响因子
International Journal of Environmental Science and Technology
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2024
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IF 3
Cui Y. P.,Huang Q.,Cao J. G.,Dong W.,Cui X. X.,Lu Y.,Li Y. J.,Huang Z. Q.
Fe 0 -based heterogeneous Fenton process has been increasingly developed for organic pollutants removal. However, the reaction activity of Fe 0 catalyst is easily weakened due to the formation of dense oxide layer or the precipitation of iron hydroxides on the surface. Herein, the effect and mechanism of magnetic field (MF), visible light (Vis), nitrilotriacetic acid (NTA) and inorganic salt ions on the Fe dissolution and dimethyl phthalate (DMP) degradation in the Fe 0 /H 2 O 2 system were investigated. The results showed that the magnetic field (100 mT), NTA and inorganic salt ions effectively enhanced the dissolution of Fe from the surface of iron filings, and visible light significantly accelerated the Fe 3+ /Fe 2+ cycle in the aqueous phase, which promoted the decomposition of H 2 O 2 by Fe 2+ to generate •OH and further enhanced the degradation of DMP. DMP was nearly completely degraded within 60 min in the pH range of 3.0–9.0, indicating the MF/Vis/NTA/Fe 0 /H 2 O 2 system effectively broadened the pH range of Fenton-like system. The iron sand column tests proved that the MF/solar/NTA/Fe 0 /H 2 O 2 system was effective for the treatment of waste leachate reverse osmosis concentrate as a typical actual high-salt wastewater, in which the removal rates of chemical oxygen demand and humic acid reached 84.5 and 90.6%, and the chromaticity was almost completely removed. Generally, the activation mechanism of Fe 0 -based heterogeneous photo-Fenton system was set up and an effective method for organic pollutant removal and high-salt wastewater treatment was provided.
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Qi Yang,Hongdi Mou,Xia Hu,Shenbao Qu,Yiu Fai Tsang
Electro-Fenton technology is an advanced oxidation process for phthalic acid esters (PAEs) that builds upon traditional Fenton technology, enhancing its efficiency, selectivity, and flexibility. Thus, cobalt-doped carbon-based catalyst (Co@NSC) were prapered via melamine doped by cobalt (Co) and calcinated at high temperature, and showed excent mesoporous structure (mainly range from 1.3 to 16 nm), high surface area (223.26 m 2 /g) and big pore volume (0.392 cm 3 /g). And the result of electrochemical performance test showed that the two-electron oxygen reduction ability of the material can be effectively improved in the case of Co doping. DMP can be degraded within 30 min by using Co@NSC as an electro-Fenton cathode, with excellent degradation efficiency (100 %) and total organic carbon (TOC) mineralization rate (about 40 %) even under the optimal conditions. The exploration of the mechanism demonstrated that OH and 1 O 2 were the main contributors. According to density functional theory (DFT) theoretical calculation and liquid chromatograph-mass spectrometer(LC-MS) results, the vulnerable site and degradation path of DMP were reasonably speculated. The ecotoxicity evaluation of the degradation products showed that the the toxicity of DMP has been significantly reduced during degradation process by Co@NSC electro-Fenton. Thus, Co@NSC is a cost-effective and promising catalyst, in which all the metal sites were utilized while the cost of metal were significantly minimized.
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高影响因子
Journal of Water Process Engineering
·
2022
·
IF 7.34
Xu Chai,Huaqi Dong,Zenggao Zhang,Zhaoyang Qi,Jie Chen,Zhixian Huang,Changshen Ye,Ting Qiu
Due to natural and production activities, mercury contamination has become one of the major environmental problems in the world. Adsorption is one of the important means to solve this problem. However, most of the commercially available adsorbents exhibit relatively low adsorption capacity and slow kinetics. Therefore, a novel 4,6-diamino-2-mercaptopyrimidine-functionalised Zr-based metal-organic framework (UiO-66-DMP) was synthesised in this study. The UiO-66-DMP was characterised through X-ray diffraction, scanning electron microscopy, energy dispersive spectrometry , X-ray photoelectron spectroscopy, Fourier-transform infrared spectrometry, and thermogravimetric analysis . The potential of the UiO-66-DMP as a superior adsorbent for Hg(II) removal and the corresponding mechanisms were evaluated through batch experiments under different conditions and density functional theory calculations. Benefitting from its high specific surface area and multiple adsorption sites, the maximum Hg(II) adsorption capacity achieved in this study was 822.00 mg·g-1, which is the highest Hg(II) adsorption capacity reported to date. In addition, under the interference of Ca(II), Cd(II), Co(II), Mg(II), Mn(II), Ni(II), Cr(III), Cu(II), Zn(II) and other coexisting ions, the UiO-66-DMP could still maintain the high selective adsorption capacity for Hg(II). According to the characterization analysis and DFT calculation results, the adsorption of Hg(II) onto the UiO-66-DMP was dependent on electrostatic and covalent interactions between metal ions and abundant functional groups on the UiO-66-DMP surface.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2021
·
IF 6.165
Shaoxiu Li,Chan Lai,Changhui Li,Jintang Zhong,Zhifeng He,Qiuyi Peng,Xi Liu,Bohan Ke
A new magnetic dual Z-scheme heterostructure photocatalyst, consisting of mesoporous graphitic carbon nitride (mpg-C 3 N 4 ), BiOBr, polythiophene (PTh), and magnetic iron oxide, was developed, and its structural, optical, and electrochemical properties were analyzed. The photocatalyst was employed for the degradation of dimethyl phthalate (DMP) in water under visible light to evaluate its photocatalytic activity. The results revealed that the photocatalytic activity of the new heterostructure photocatalyst was superior to that of its single-component counterparts. The reaction kinetics of photocatalytic DMP degradation followed pseudo first-order kinetics and the reaction rate constant was 3.7- and 4.5-fold higher than those of pristine g-C 3 N 4 and BiOBr, respectively. The enhanced photocatalytic performance was chiefly attributed to the dual Z-scheme heterostructure generated between mpg-C 3 N 4 , PTh, and BiOBr, which effectively hindered the recombination of photogenerated electron and hole pairs in mpg-C 3 N 4 and BiOBr, improving the photogenerated carrier transfer efficiency. Radical trapping test results indicated that the active species, h + , ·O 2 – , and ·OH, coexisted during the photocatalytic reaction process, and that h + played a major role in the destruction of DMP molecules. DMP was degraded into intermediate small-molecule products, such as acids and alcohols, which were ultimately mineralized to CO 2 and H 2 O. The magnetic property of the new heterostructure photocatalyst enabled its straightforward separation from water using magnetic separation technology for further reuse. This study provides a new material and method for the effective removal of DMP from aqueous solution.
研究领域:
环境科学
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材料科学
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化学工程
·
光催化
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Ning Wang,Nan Zhang,Mei-Ling Sun,Yan Sun,Qing-Yu Dong,Yu Wang,Zeng-Tian Gu,Hai-Tao Ding,Qi-Long Qin,Yong Jiang,Xiu-Lan Chen,Yu-Zhong Zhang,Chao Gao,Chun-Yang Li
Phthalate esters (PAEs) are emerging hazardous and toxic chemicals that are extensively used as plasticizers or additives. Diethyl phthalate (DEP) and dimethyl phthalate (DMP), two kinds of PAEs, have been listed as the priority pollutants by many countries. PAE hydrolases are the most effective enzymes in PAE degradation, among which family IV esterases are predominate. However, only a few PAE hydrolases have been characterized, and as far as we know, no crystal structure of any PAE hydrolases of the family IV esterases is available to date. HylD1 is a PAE hydrolase of the family IV esterases, which can degrade DMP and DEP. Here, the recombinant HylD1 was characterized. HylD1 maintained a dimer in solution, and functioned under a relatively wide pH range. The crystal structures of HylD1 and its complex with monoethyl phthalate were solved. Residues involved in substrate binding were identified. The catalytic mechanism of HylD1 mediated by the catalytic triad Ser140-Asp231-His261 was further proposed. The hylD1 gene is widely distributed in different environments, suggesting its important role in PAEs degradation. This study provides a better understanding of PAEs hydrolysis , and lays out favorable bases for the rational design of highly-efficient PAEs degradation enzymes for industrial applications in future.
研究领域:
环境科学
·
生物化学
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酶学
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结构生物学
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）