The Experts below are selected from a list of 4923 Experts worldwide ranked by ideXlab platform
Hui Wang - One of the best experts on this subject based on the ideXlab platform.
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Controllable synthesis of mesoporous manganese oxide microsphere efficient for photo-Fenton-like removal of Fluoroquinolone Antibiotics
Applied Catalysis B: Environmental, 2019Co-Authors: Anqi Wang, Hui Wang, Hao Deng, Shu Wang, Wei Shi, Rongliang Qiu, Kai YanAbstract:Abstract Controllable synthesis of mesoporous manganese oxide (MnOx) microsphere is successfully achieved using a soft-template P123 assisted method. The as-obtained MnOx materials are highly efficient and versatile to remove the category of Fluoroquinolone Antibiotics (i.e., ofloxacin, ciprofloxacin, enrofloxacin and levofloxacin) using peroxymonosulfate (PMS) as the oxidant under UV or simulated sunlight irradiation. The mesoporous Mn3O4 microsphere prepared in the presence of 2 g P123 (P2-Mn3O4) exhibits the superior catalytic activity with almost perfect degradation for the Fluoroquinolone Antibiotics in 10 min under UV irradiation. Moreover, under simulated sunlight irradiation, 74.5% of ofloxacin, 79.4% of ciprofloxacin, 72.3% of enrofloxacin and 81.9% of levofloxacin can be degraded by P2-Mn3O4 in 10 min. Besides, the P2-Mn3O4 catalyst maintains stable without the obvious deactivation of catalytic activity or structural change after several successive runs, and slight leaching of Mn ions is observed. The ESR spectra further document that SO4 −, OH, O2 − and 1O2 radicals are prominent in the decomposition process of antibiotic molecules. In the end, the reaction kinetic and rational degradation pathway are also investigated and proposed.
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microwave assisted extraction and in situ clean up for the determination of Fluoroquinolone Antibiotics in chicken breast muscle by lc ms ms
IEEE Journal of Solid-state Circuits, 2011Co-Authors: Ligang Chen, Jian Wang, Hui Wang, Lei Sun, Xin Sun, Tianyi Wang, Qinglei Zeng, Xiaopan Zhang, Lan DingAbstract:A new method was developed for the determination of six Fluoroquinolone Antibiotics including fleroxacin, levofloxacin, ciprofloxacin, lomfloxacin, enrofloxacin, and sparfloxacin in chicken breast muscle, in which the extraction and clean-up were performed in one step by microwave irradiation. The mixture of ACN containing 0.3% v/v phosphoric acid/water pH 3 (70:30, v/v) was used as the extraction solution and hexane was used as the clean-up solution. The extract was analyzed by liquid chromatography-tandem mass spectrometry system. The RSDs of intra- and inter-day obtained are in the range of 1.0-10.4 and 3.8-13.6%, respectively. In the three fortified levels of chicken breast muscle (20, 100, and 500 ng/g), the recoveries of Fluoroquinolone Antibiotics ranging from 66.0 to 97.2% are obtained. The LODs are in the range of 2.7-6.7 ng/g. This method simplifies the process of the sample preparation and reduces the operation errors.
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Microwave-assisted extraction and in situ clean-up for the determination of Fluoroquinolone Antibiotics in chicken breast muscle by LC-MS/MS.
Journal of separation science, 2010Co-Authors: Ligang Chen, Lei Sun, Xin Sun, Jing Wang, Tianyi Wang, Qinglei Zeng, Hui WangAbstract:A new method was developed for the determination of six Fluoroquinolone Antibiotics including fleroxacin, levofloxacin, ciprofloxacin, lomfloxacin, enrofloxacin, and sparfloxacin in chicken breast muscle, in which the extraction and clean-up were performed in one step by microwave irradiation. The mixture of ACN containing 0.3% v/v phosphoric acid/water pH 3 (70:30, v/v) was used as the extraction solution and hexane was used as the clean-up solution. The extract was analyzed by liquid chromatography-tandem mass spectrometry system. The RSDs of intra- and inter-day obtained are in the range of 1.0-10.4 and 3.8-13.6%, respectively. In the three fortified levels of chicken breast muscle (20, 100, and 500 ng/g), the recoveries of Fluoroquinolone Antibiotics ranging from 66.0 to 97.2% are obtained. The LODs are in the range of 2.7-6.7 ng/g. This method simplifies the process of the sample preparation and reduces the operation errors.
Yang Xiao - One of the best experts on this subject based on the ideXlab platform.
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occurrence and fate of quinolone and Fluoroquinolone Antibiotics in a municipal sewage treatment plant
Water Research, 2012Co-Authors: Yang Xiao, Jianying HuAbstract:This study developed a method for analysis of nineteen quinolone and Fluoroquinolone Antibiotics (FQs) in sludge samples, and investigated the occurrence and fate of the FQs in a municipal sewage treatment plant (STP) with anaerobic, anoxic, and aerobic treatment processes. Eleven compounds, including pipemidic acid, fleroxacin, ofloxacin, norfloxacin, ciprofloxacin, enrofloxacin, lomefloxacin, sparfloxacin, gatifloxacin, moxifloxacin, and sarafloxacin (only in sludge), were detected in the STP. The predominance of ofloxacin and norfloxacin, followed by lomefloxacin, ciprofloxacin, gatifloxacin, and moxifloxacin, were found in wastewater, suspended solids, and sludge. The total concentrations of FQs were 2573 ± 241 ng/L, 1013 ± 218 ng/L, and 18.4 ± 0.9 mg/kg in raw sewage, secondary effluent, and sludge, respectively. Extremely low mass change percentages were observed for FQs in anaerobic, anoxic, and aerobic treatment units, suggesting biodegradation to be of minor importance in the removal of FQs in STPs. 50–87% of the initial FQs loadings (except for pipemidic acid (36%)) were ultimately found in the dewatered sludge. Mean removal efficiencies of FQs in the STP were 56–75%, except for new generation drugs such as moxifloxacin (40 ± 5%) and gatifloxacin (43 ± 13%). A significant positive correlation was found between removal efficiencies and Kd of FQs. The major factor in the removal of FQs in the STP was sorption to sludge, which was not governed by hydrophobic interactions. The long-term cycling and persistence of FQs in the STP has made activated sludge as a huge reservoir of FQ Antibiotics.
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Trace analysis of quinolone and Fluoroquinolone Antibiotics from wastewaters by liquid chromatography-electrospray tandem mass spectrometry.
Journal of Chromatography A, 2008Co-Authors: Yang Xiao, Hong Chang, Ai JiaAbstract:Abstract A sensitive liquid chromatography–electrospray tandem mass spectrometry method, combined with solid-phase extraction and a weak cation exchange cartridge cleanup, was established for twenty quinolone and Fluoroquinolone Antibiotics (pipemidic acid, flerofloxacin, ofloxacin, pefloxacin, enoxacin, norfloxacin, ciprofloxacin, danofloxacin, enrofloxacin, lomefloxacin, difloxacin, sarafloxacin, gatifloxacin, sparfloxacin, moxifloxacin, cinoxacin, oxolinic acid, nalidixic acid, flumequine, and piromidic acid) in influent, effluent, and river waters. For the various water matrices considered, the overall recoveries were from 64% to 127% except for piromidic acid (27–33%), and no obvious matrix effect was observed. The method detection limits for the twenty target Antibiotics in the influent, effluent, and surface water samples were 1.6–50 ng/L, 0.6–50 ng/L, and 0.8–50 ng/L, respectively. This method was applied to analyze residual quinolone and Fluoroquinolone Antibiotics in wastewater and surface water samples from Beijing, China. Eight Antibiotics (12 (pipemidic acid)–1208 ng/L (ofloxacin)) were detected in wastewater, and seven (1.3 (lomefloxacin)–535 ng/L (ofloxacin)) were detected in surface water samples. Gatifloxacin, a 4th generation Fluoroquinolone antibiotic, was detected for the first time in influent (111 ng/L), effluent (56 ng/L), and river water (16–42 ng/L).
Maryam Shabani - One of the best experts on this subject based on the ideXlab platform.
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sono solvothermal hybrid fabrication of biocl bi24o31cl10 rgo nano heterostructure photocatalyst with efficient solar light driven performance in degradation of Fluoroquinolone Antibiotics
Solar Energy Materials and Solar Cells, 2019Co-Authors: Maryam Shabani, Mohammad Haghighi, Davood Kahforoushan, Amir HaghighiAbstract:Abstract Herein, novel BiOCl-Bi24O31Cl10/rGO heterostructured nanocomposites with various contents of rGO were designed through a simple sono-solvothermal method, employing in the photo-elimination of Fluoroquinolone Antibiotics under the simulated solar-light. Their properties were described using various analyses such as XRD, Raman spectroscopy, FESEM, HRTEM, surface particle size distribution, BET-BJH, DRS and photoluminescence analyses. The results revealed the suitable dispersion of BiOCl-Bi24O31Cl10 nanoparticles on the rGO nanosheets and the creation Bi-C bonds in BiOCl-Bi24O31Cl10/rGO. On the basis of experimental outcomes, it was concluded the strong influence of the rGO value into BiOCl-Bi24O31Cl10/rGO structure on the Fluoroquinolone photo-degradation and the high photo-activity was obtained on the BiOCl-Bi24O31Cl10/rGO(0.5%) with the elimination rate constant 1.6 times contrasting to the bare BiOCl-Bi24O31Cl10 in the ofloxacin photo-removal. This consequence was devoted the decrease of band gap and the enhanced light absorption features which can lead to enhancing production of electron-hole pairs, the raising separation and transmission of charge carriers and reducing recombination rate of them, the increasing surface adsorption of contaminant molecules and the increment of accessible active sites. Besides, the synthesized BiOCl-Bi24O31Cl10/rGO(0.5%) was exposed the great stability.
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grain like bismuth rich bismuth bismuth oxychlorides intra heterojunction efficacious solar light driven photodegradation of Fluoroquinolone Antibiotics and 2 level factorial approach
Journal of The Taiwan Institute of Chemical Engineers, 2019Co-Authors: Maryam Shabani, Mohammad Haghighi, Davood Kahforoushan, Shirin HeidariAbstract:Abstract The grain-like BiOCl (60%)–Bi24O31Cl10 (40%) intra-heterojunction nanophotocatalyst was fabricated by a facile one-pot combustion route using sorbitol fuel. It was characterized by the utilization of XRD, FESEM, PSD, BET–BJH and DRS, which proved its successful synthesis. The solar-light-driven photocatalytic activity of BiOCl (60%)–Bi24O31Cl10 (40%) was appraised through the destruction of Fluoroquinolone Antibiotics (FQAs) such as ciprofloxacin, ofloxacin and levofloxacin as persistent and resisting emerging pollutants in an aqueous solution. Consequences obtained were implied to its prominent performance. To investigate the individual and interplay influences of the input operating parameters (catalyst loading, initial pollutant concentration, initial pH and reaction time), the modelling of the photocatalytic destruction of ofloxacin as the response was done by 2-level full factorial experimental design approach. A semi-empirical fourth-order regression model with R2= 0.9878 was expressed to relate between the response and independent variables. Results obtained of the mentioned approach demonstrated the high adequacy of the model. The influence of individual parameters and their interactions on the photocatalytic degradation efficiency of ofloxacin was possessed by the main effect graphs, contour and response surface plots. This study not only illustrates a hopeful application of the grain-like BiOCl–Bi24O31Cl10 in the solar-light-driven photo-destruction of resistant pollutants such as FQAs but also shows the favourable direction to gain the high-performance.
Zhili Ruan - One of the best experts on this subject based on the ideXlab platform.
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determination of four Fluoroquinolone Antibiotics in tap water in guangzhou and macao
Environmental Pollution, 2010Co-Authors: Qiaojun Wang, Peng Gao, Yiping Tai, Yan Zhang, Zhili RuanAbstract:Four Fluoroquinolone Antibiotics (norfloxacin, ciprofloxacin, lomefloxacin, and enrofloxacin) in tap water in Guangzhou and Macao were analyzed using high performance liquid chromatography fluorescence detection. The results showed that all target Antibiotics were detected in high rate both in Guangzhou (77.5%) and Macao (100%), ranging from 1.0 to 679.7 ng/L (SD
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Determination of four Fluoroquinolone Antibiotics in tap water in Guangzhou and Macao
Environmental pollution (Barking Essex : 1987), 2010Co-Authors: Yiruhan, Qiaojun Wang, Peng Gao, Yiping Tai, Yan Zhang, Zhili RuanAbstract:Four Fluoroquinolone Antibiotics (norfloxacin, ciprofloxacin, lomefloxacin, and enrofloxacin) in tap water in Guangzhou and Macao were analyzed using high performance liquid chromatography fluorescence detection. The results showed that all target Antibiotics were detected in high rate both in Guangzhou (77.5%) and Macao (100%), ranging from 1.0 to 679.7 ng/L (SD
Ligang Chen - One of the best experts on this subject based on the ideXlab platform.
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microwave assisted extraction and in situ clean up for the determination of Fluoroquinolone Antibiotics in chicken breast muscle by lc ms ms
IEEE Journal of Solid-state Circuits, 2011Co-Authors: Ligang Chen, Jian Wang, Hui Wang, Lei Sun, Xin Sun, Tianyi Wang, Qinglei Zeng, Xiaopan Zhang, Lan DingAbstract:A new method was developed for the determination of six Fluoroquinolone Antibiotics including fleroxacin, levofloxacin, ciprofloxacin, lomfloxacin, enrofloxacin, and sparfloxacin in chicken breast muscle, in which the extraction and clean-up were performed in one step by microwave irradiation. The mixture of ACN containing 0.3% v/v phosphoric acid/water pH 3 (70:30, v/v) was used as the extraction solution and hexane was used as the clean-up solution. The extract was analyzed by liquid chromatography-tandem mass spectrometry system. The RSDs of intra- and inter-day obtained are in the range of 1.0-10.4 and 3.8-13.6%, respectively. In the three fortified levels of chicken breast muscle (20, 100, and 500 ng/g), the recoveries of Fluoroquinolone Antibiotics ranging from 66.0 to 97.2% are obtained. The LODs are in the range of 2.7-6.7 ng/g. This method simplifies the process of the sample preparation and reduces the operation errors.
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Microwave-assisted extraction and in situ clean-up for the determination of Fluoroquinolone Antibiotics in chicken breast muscle by LC-MS/MS.
Journal of separation science, 2010Co-Authors: Ligang Chen, Lei Sun, Xin Sun, Jing Wang, Tianyi Wang, Qinglei Zeng, Hui WangAbstract:A new method was developed for the determination of six Fluoroquinolone Antibiotics including fleroxacin, levofloxacin, ciprofloxacin, lomfloxacin, enrofloxacin, and sparfloxacin in chicken breast muscle, in which the extraction and clean-up were performed in one step by microwave irradiation. The mixture of ACN containing 0.3% v/v phosphoric acid/water pH 3 (70:30, v/v) was used as the extraction solution and hexane was used as the clean-up solution. The extract was analyzed by liquid chromatography-tandem mass spectrometry system. The RSDs of intra- and inter-day obtained are in the range of 1.0-10.4 and 3.8-13.6%, respectively. In the three fortified levels of chicken breast muscle (20, 100, and 500 ng/g), the recoveries of Fluoroquinolone Antibiotics ranging from 66.0 to 97.2% are obtained. The LODs are in the range of 2.7-6.7 ng/g. This method simplifies the process of the sample preparation and reduces the operation errors.