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Yu RB, Quirino JP. Pseudophase-aided in-line sample concentration for capillary electrophoresis. Trends Analyt Chem 2023. [DOI: 10.1016/j.trac.2023.116914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Gao Y, Guo S, Zhao Y, Ji Q, Yun C, Wang S, Zhang Y, Wang W, Wang H. Extraction and Preconcentration of the Main Target Polyphenols from Empetrum nigrum by Freeze-Ultrasonic Thawing Method Based on Synthetic Gemini Surfactant Aqueous Systems. FOOD BIOPROCESS TECH 2022. [DOI: 10.1007/s11947-022-02969-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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3
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Ultra-Sensitive Si-Based Optical Sensor for Nanoparticle-Size Traditional Water Pollutant Detection. PHOTONICS 2022. [DOI: 10.3390/photonics9050289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A low-cost Si-based optical nano-sensor that monitors traditional water pollutants is introduced in this paper. The introduced sensor works in the near-infrared region, 900 nm to 2500 nm spectral range. The proposed structure consists of a Si layer with an optimized thickness of 300 nm on the top of the Al layer acting as a back reflector. On the top of the Si layer, the water pollutants are modeled as nanoparticle materials of different sizes. The finite difference time domain method is utilized to optimize the thicknesses of the Si layer by analyzing the optical light absorption considering different Si layer thicknesses and different pollutant nanoparticles’ sizes. Different interpolation techniques, including polynomials with various degrees and locally weighted smoothing quadratic regression, are used to find the best fitting model representing the simulated data points with goodness of fit analysis. Three features are proposed to identify the water pollutant with its size, peak absorption wavelength, relative amplitude, and a full width at half maximum. The device’s performance in detecting six different pollutants, silver, aluminum, copper, chromium, selenium, and ammonia, is evaluated. Sensitivity, a figure of merit, and a quality factor are used to evaluate the proposed sensor. The obtained maximum sensitivity is 11,300 nm/RIU, FOM of 740, and quality factor of 670.
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Semail NF, Abdul Keyon AS, Saad B, Kamaruzaman S, Mohamad Zain NN, Lim V, Miskam M, Wan Abdullah WN, Yahaya N, Chen DDY. Simultaneous preconcentration and determination of sulfonamide antibiotics in milk and yoghurt by dynamic pH junction focusing coupled with capillary electrophoresis. Talanta 2022; 236:122833. [PMID: 34635223 DOI: 10.1016/j.talanta.2021.122833] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/27/2021] [Accepted: 08/28/2021] [Indexed: 10/20/2022]
Abstract
A dynamic pH junction was used in capillary electrophoresis (CE-DAD) to on-line preconcentrate, separate, and determine trace amounts of sulfonamide antibiotics (SAs) in milk and yoghurt samples in this study. A sample matrix with 0.15% acetic acid and 10% methanol (MeOH) at a pH of 4.0, and a background electrolyte (BGE) that contained 35 mM sodium citrate with 10% MeOH at a pH of 8.5, and an acidic barrage of 0.4% acetic acid with 10% MeOH at a pH of 2.5 were utilised to achieve a stacking effect for SAs through a dynamic pH junction. Under optimised conditions, the proposed preconcentration method showed good linearity (30-500 ng/mL, r2 ≥ 0.9940), low limits of detection (LODs) of 4.1-6.3 ng/mL, and acceptable analytes recovery (81.2-106.9%) with relative standard deviations (RSDs) within 5.3-13.7 (n = 9). The limits of quantification (LOQs) were below the maximum residue limit approved by the European Union (EU) in this type of matrices. Sensitivity enhancement factors of up to 129 were reached with the optimised dynamic pH junction using CE with a diode array detector (DAD). The method was used to determine SAs in fresh milk, low-fat milk, full-cream milk, and yoghurt samples.
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Affiliation(s)
- Nadhiratul-Farihin Semail
- Integrative Medicine Clusters, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Bertam, 13200, Kepala Batas, Penang, Malaysia
| | - Aemi Syazwani Abdul Keyon
- Department of Chemistry, Faculty of Science and Centre for Sustainable Nanomaterials, Ibnu Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, 81310, UTM, Johor Bahru, Johor, Malaysia
| | - Bahruddin Saad
- Fundamental & Applied Sciences Department, Universiti Teknologi PETRONAS, 32601, Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Sazlinda Kamaruzaman
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor Darul Ehsan, Malaysia
| | - Nur Nadhirah Mohamad Zain
- Integrative Medicine Clusters, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Bertam, 13200, Kepala Batas, Penang, Malaysia
| | - Vuanghao Lim
- Integrative Medicine Clusters, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Bertam, 13200, Kepala Batas, Penang, Malaysia
| | - Mazidatulakmam Miskam
- School of Chemical Sciences, Universiti Sains Malaysia, 11800, USM Pulau Pinang, Malaysia
| | | | - Noorfatimah Yahaya
- Integrative Medicine Clusters, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Bertam, 13200, Kepala Batas, Penang, Malaysia.
| | - David D Y Chen
- Department of Chemistry, University of British Columbia, Vancouver, V6T 1Z1, Canada.
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Švecová P, Baron D, Schug KA, Pluháček T, Petr J. Ultra-trace determination of oxaliplatin impurities by sweeping-MEKC-ICP-MS. Microchem J 2022. [DOI: 10.1016/j.microc.2021.106967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kuznetsova DA, Kuznetsov DM, Vasileva LA, Toropchina AV, Belova DK, Amerhanova SK, Lyubina AP, Voloshina AD, Ya. Zakharova L. Pyrrolidinium surfactants with a biodegradable carbamate fragment: Self-assembling and biomedical application. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Cyclic and Acyclic Amine Oxide Alkyl Derivatives as Potential Adjuvants in Antimicrobial Chemotherapy against Methicillin-Resistant Staphylococcus aureus with an MDR Profile. Antibiotics (Basel) 2021; 10:antibiotics10080952. [PMID: 34439002 PMCID: PMC8388947 DOI: 10.3390/antibiotics10080952] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/03/2021] [Accepted: 08/05/2021] [Indexed: 11/16/2022] Open
Abstract
The dramatic intensification of antimicrobial resistance occurrence in pathogenic bacteria concerns the global community. The revitalisation of inactive antibiotics is, at present, the only way to go through this health system crisis and the use of antimicrobial adjuvants is turning out the most promising approach. Due to their low toxicity, eco-friendly characteristics and antimicrobial activity, amphoteric surfactants are good candidates. This study investigated the adjuvant potentialities of commercial acyclic and newly cyclic N-oxide surfactants combined with therapeutically available antibiotics against MDR methicillin-resistant Staphylococcus aureus (MRSA). The safety profile of the new cyclic compounds, compared to commercial surfactants, was preliminarily assessed, evaluating the cytotoxicity on human peripheral mononuclear blood cells and the haemolysis in human red blood cells. The compounds show an efficacious antimicrobial activity strongly related to the length of the carbon atom chain. In drug–drug interaction assays, all surfactants act synergistically, restoring sensitivity to oxacillin in MRSA, with dodecyl acyclic and cyclic derivatives being the most effective. After evaluating the cytotoxicity and considering the antimicrobial action, the most promising compound is the L-prolinol amine-oxide C12NOX. These findings suggest that the combination of antibiotics with amphoteric surfactants is a valuable therapeutic option for topical infections sustained by multidrug-resistant S. aureus.
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Kravchenko A, Kolobova E, Kartsova L. Multifunction covalent coatings for separation of amino acids, biogenic amines, steroid hormones, and ketoprofen enantiomers by capillary electrophoresis and capillary electrochromatography. SEPARATION SCIENCE PLUS 2020. [DOI: 10.1002/sscp.201900098] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Anastasia Kravchenko
- Saint Petersburg State UniversityInstitute of Chemistry 26 Universitetskii prospect St. Petersburg Peterhof 198504 Russia
| | - Ekaterina Kolobova
- Saint Petersburg State UniversityInstitute of Chemistry 26 Universitetskii prospect St. Petersburg Peterhof 198504 Russia
- The Federal State Institute of Public Health ‘The Nikiforov Russian Center of Emergency and Radiation Medicine’The Ministry of Russian Federation for Civil DefenceEmergencies and Elimination of Consequences of Natural Disasters 54, Optikov st. St. Petersburg 197082 Russia
| | - Liudmila Kartsova
- Saint Petersburg State UniversityInstitute of Chemistry 26 Universitetskii prospect St. Petersburg Peterhof 198504 Russia
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Influence of structurally related micelle forming surfactants on the antioxidant activity of natural substances. Chem Phys Lipids 2019; 225:104818. [DOI: 10.1016/j.chemphyslip.2019.104818] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 08/22/2019] [Accepted: 09/04/2019] [Indexed: 11/23/2022]
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Vasilieva EA, Lukashenko SS, Vasileva LA, Pavlov RV, Gaynanova GA, Zakharova LY. Aggregation behavior of the surfactant bearing pyrrolidinium head group in the presence of polyacrylic acid. Russ Chem Bull 2019. [DOI: 10.1007/s11172-019-2390-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Šlampová A, Malá Z, Gebauer P. Recent progress of sample stacking in capillary electrophoresis (2016-2018). Electrophoresis 2018; 40:40-54. [PMID: 30073675 DOI: 10.1002/elps.201800261] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 07/31/2018] [Accepted: 07/31/2018] [Indexed: 01/03/2023]
Abstract
Electrophoretic sample stacking comprises a group of capillary electrophoretic techniques where trace analytes from the sample are concentrated into a short zone (stack). This paper is a continuation of our previous reviews on the topic and brings a survey of more than 120 papers published approximately since the second quarter of 2016 till the first quarter of 2018. It is organized according to the particular stacking principles and includes chapters on concentration adjustment (Kohlrausch) stacking, on stacking techniques based on pH changes, on stacking in electrokinetic chromatography and on other stacking techniques. Where available, explicit information is given about the procedure, electrolyte(s) used, detector employed and sensitivity reached. Not reviewed are papers on transient isotachophoresis which are covered by another review in this issue.
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Affiliation(s)
- Andrea Šlampová
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Brno, Czech Republic
| | - Zdena Malá
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Brno, Czech Republic
| | - Petr Gebauer
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Brno, Czech Republic
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Wang X, Ye N, Hu X, Liu Q, Li J, Peng L, Ma X. Open-tubular capillary electrochromatographic determination of ten sulfonamides in tap water and milk by a metal-organic framework-coated capillary column. Electrophoresis 2018; 39:2236-2245. [PMID: 29799133 DOI: 10.1002/elps.201800047] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/22/2018] [Accepted: 05/19/2018] [Indexed: 01/24/2023]
Abstract
In this study, a metal-organic framework (MOF), [Mn(cam)(bpy)], was synthesized and characterized by thermogravimetric analysis, scanning electron microscopy, and Fourier transform infrared spectrometry. An open-tubular capillary column was fabricated from [Mn(cam)(bpy)] via the amide coupling method. Ten types of sulfonamides were separated through the fabricated capillary column, which showed a good limits of detection (<0.07 μg/mL) and linear ranges (1-100 or 5-100 μg/mL) with a high correlation coefficients (R2 > 0.9987). The intra-day, inter-day and column-to-column relative standard deviations (RSDs) in the migration times ranged from 0.44 to 4.87%, and the peak area RSDs ranged from 0.80 to 7.28%. The developed capillary electrochromatography method can be successfully utilized for the determination of sulfonamides in tap water and milk samples.
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Affiliation(s)
- Xuan Wang
- Department of Chemistry, Capital Normal University, Beijing, P. R. China
| | - Nengsheng Ye
- Department of Chemistry, Capital Normal University, Beijing, P. R. China
| | - Xiaoyu Hu
- Department of Chemistry, Capital Normal University, Beijing, P. R. China
| | - Qingye Liu
- Department of Chemistry, Capital Normal University, Beijing, P. R. China
| | - Jian Li
- Beijing Institute of Veterinary Drugs Control, Beijing, P. R. China
| | - Lin Peng
- Department of Chemistry, Capital Normal University, Beijing, P. R. China
| | - Xiaotong Ma
- Department of Chemistry, Capital Normal University, Beijing, P. R. China
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Greño M, Castro-Puyana M, García MÁ, Marina ML. Analysis of antibiotics by CE and CEC and their use as chiral selectors: An update. Electrophoresis 2017; 39:235-259. [PMID: 28941242 DOI: 10.1002/elps.201700306] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 09/12/2017] [Accepted: 09/12/2017] [Indexed: 12/11/2022]
Abstract
Natural, synthetic or semisynthetic antibiotics are highly used to prevent or treat diseases in humans and animals, and to promote animal growth. This fact makes that antibiotics residues or their transformation products may be present in food or in the environment after human or animal excretion. For this reason, it is imperative to develop reliable and sensitive analytical methodologies for their analysis. The main aim of this work is to present and discuss the most recent applications of capillary electromigration methods for the analysis of antibiotics, including the developments and applications of their use as chiral selectors in CE. The literature published from June 2015 to June 2017 is included following the previous review by Domínguez-Vega et al. (Electrophoresis, 2016, 37, 189-211). Information about the use of different detection systems, off-line and on-line strategies to improve sensitivity, and microchip devices for the analysis of antibiotics is provided and properly discussed.
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Affiliation(s)
- Maider Greño
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Alcalá de Henares (Madrid), Spain
| | - María Castro-Puyana
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Alcalá de Henares (Madrid), Spain
| | - María Ángeles García
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Alcalá de Henares (Madrid), Spain
| | - María Luisa Marina
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Alcalá de Henares (Madrid), Spain
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Bhadani A, Kafle A, Koura S, Sakai K, Sakai H, Abe M. Physicochemical Evaluation of Micellar Solution and Lyotropic Phases Formed by Self-Assembled Aggregates of Morpholinium Geminis. ACS OMEGA 2017; 2:5324-5334. [PMID: 31457801 PMCID: PMC6644452 DOI: 10.1021/acsomega.7b00428] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 08/17/2017] [Indexed: 06/10/2023]
Abstract
The micellar solution and the lyotropic liquid crystalline phases formed by gemini surfactants containing morpholinium headgroups are investigated for their self-aggregation and physicochemical properties in water. These gemini surfactants demonstrated good surface activity because they are able to undergo micellization at lower concentration and form nanosized micellar aggregates in dilute aqueous solution. The binary mixture of the morpholinium gemini surfactant-water system is investigated over a wide range of concentrations. The micellar solution of the morpholinium gemini surfactants demonstrated Newtonian fluidlike behavior between 10 and 50 wt % as the observed viscosities were independent of the applied shear rate. At higher concentration, morpholinium geminis formed self-assembled lyotropic phases in water. These liquid crystalline phases were characterized by small-angle X-ray scattering and polarized optical microscopy techniques.
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Affiliation(s)
- Avinash Bhadani
- Research
Institute for Science and Technology and Department of Pure and Applied
Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Ananda Kafle
- Research
Institute for Science and Technology and Department of Pure and Applied
Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Setsuko Koura
- Department
of Applied Chemistry, Chiba Institute of
Technology, 2-17-1, Tsudanuma, Narashino, Chiba 275-8588, Japan
| | - Kenichi Sakai
- Research
Institute for Science and Technology and Department of Pure and Applied
Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Hideki Sakai
- Research
Institute for Science and Technology and Department of Pure and Applied
Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Masahiko Abe
- Research
Institute for Science and Technology and Department of Pure and Applied
Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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