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Zhou Y, Niu J, Zhou Y, Li F. Liquid Plasticine-Based Electrokinetic Enrichment of Proteins. ChemistryOpen 2023; 12:e202200259. [PMID: 36971105 PMCID: PMC10041546 DOI: 10.1002/open.202200259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 03/07/2023] [Indexed: 03/29/2023] Open
Abstract
Protein analysis is an important approach for disease diagnosis, in which sample pretreatment is an essential step since protein samples are often complex and many protein biomarkers are of low abundance. Here, given the good openness and light transmission of liquid plasticine (LP), which is a liquid entity formed by SiO2 nanoparticles and encapsulated aqueous solution, we developed a LP-based field-amplified sample stacking (FASS) system for protein enrichment. The system was composed of a LP container, a sample solution and a Tris-HCl solution containing hydroxyethyl cellulose (HEC). The system design, mechanism investigation, optimization of experimental parameters and characterization of LP-FASS performance for protein enrichment were well studied. Under the optimized experimental conditions of 1 % HEC, 100 mm Tris-HCl and 100 V in the LP-FASS system, a 40-80 times enrichment of proteins was obtained in 40 min using bovine hemoglobin (BHb) as the model protein using the constructed LP-FASS system. The simultaneous enrichment of multiple proteins (phycocyanin, BHb and cytochrome C) was also realized using the system. The LP-FASS system can serve as a new platform for protein enrichment which is easy to be combined with online and offline detections.
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Affiliation(s)
- Yulin Zhou
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, 710049, Xi'an, P. R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, 710049, Xi'an, P. R. China
| | - Jicheng Niu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, 710049, Xi'an, P. R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, 710049, Xi'an, P. R. China
| | - Yan Zhou
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, 710049, Xi'an, P. R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, 710049, Xi'an, P. R. China
| | - Fei Li
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, 710049, Xi'an, P. R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, 710049, Xi'an, P. R. China
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2
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Determination of β 2-Agonist Residues in Fermented Ham Using UHPLC-MS/MS after Enzymatic Digestion and Sulfonic Resin Solid Phase Purification. Molecules 2023; 28:molecules28052039. [PMID: 36903285 PMCID: PMC10004211 DOI: 10.3390/molecules28052039] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/12/2023] [Accepted: 02/20/2023] [Indexed: 02/25/2023] Open
Abstract
β2-agonists are a class of synthetic sympathomimetic drugs with acute poisoning effects if consumed as residues in foods. To improve the efficiency of sample preparation and to overcome matrix-dependent signal suppression in the quantitative analysis of four β2-agonists (clenbuterol, ractopamine, salbutamol, and terbutaline) residues in fermented ham, an enzyme digestion coupled cation exchange purification method for sample preparation was established using ultra-high performance liquid chromatography and tandem mass spectrometry (UHPLC-MS/MS). Enzymatic digests were subject to cleanup treatment on three different solid phase extraction (SPE) columns and a polymer-based strong cation resin (SCR) cartridge containing sulfonic resin was found to be optimal compared with silica-based sulfonic acid and polymer sulfonic acid resins based SPEs. The analytes were investigated over the linear range of 0.5 to 10.0 μg/kg with recovery rates of 76.0-102.0%, and a relative standard deviation of 1.8-13.3% (n = 6). The limit of detection (LOD) and the limit of quantification (LOQ) were 0.1 μg/kg and 0.3 μg/kg, respectively. This newly developed method was applied to the detection of β2-agonist residues in 50 commercial ham products and only one sample was found to contain β2-agonist residues (clenbuterol at 15.2 µg/kg).
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3
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Li X, Yin Z, Zhai Y, Kang W, Shi H, Li Z. Magnetic solid-phase extraction of four β-lactams using polypyrrole-coated magnetic nanoparticles from water samples by micellar electrokinetic capillary chromatography analysis. J Chromatogr A 2020; 1610:460541. [DOI: 10.1016/j.chroma.2019.460541] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 09/13/2019] [Accepted: 09/13/2019] [Indexed: 11/16/2022]
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4
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Salem YA, Hammouda MEA, Abu El-Enin MA, El-Ashry SM. Multiple analytical methods for determination of formoterol and glycopyrronium simultaneously in their novel combined metered dose inhaler. BMC Chem 2019; 13:75. [PMID: 31384822 PMCID: PMC6661743 DOI: 10.1186/s13065-019-0592-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 05/31/2019] [Indexed: 11/10/2022] Open
Abstract
One of the major causes of mortality all over the world is chronic obstructive pulmonary disease (COPD). Recently approved combined inhaler of formoterol fumarate (FF) and glycopyrronium bromide (GLY) has been used in very low concentrations (µg level/actuation) doses in COPD patients. The first spectrophotometric and advanced highly sensitive liquid chromatography has been achieved successfully throughout this study, permitting validated analysis of dual combined inhaler in raw material as well as pharmaceutical inhaled dosage form. Three sensitive analytical methods were carried out for the simultaneous assay of FF and GLY in their novel combined Metered dose inhaler (MDI). The first method depends on measuring the first derivative amplitudes at 208.27 nm for FF and at 213.27 nm and 239.86 nm for GLY, respectively. The second method depends on measurement of the first derivative of the ratio spectra at 214 or 229 nm for FF and 240 or 259 nm for GLY, respectively. For the spectrophotometric methods, the linearity ranges were 0.48-9.6 µg/mL for FF and 0.9-18 µg/mL for GLY. For the third method, valid ion-pairing chromatographic method was carried out applying C18 column and isocratic mobile phase of 60% v/v acetonitrile and 40% v/v deionized waster (pH 3.0) enclosing 0.025% sodium dodecyl sulfate, using UV detection adjusted to 210 nm and flow rate of 1.2 mL/min. For the ion-pairing chromatographic method, the linearity ranges were 0.048-4.8 µg/mL for FF and 0.09-9.0 µg/mL for GLY. The developed methods are reproducible, valid and offer efficient resolution between formoterol and glycopyrronium using spectrophotometric methods and highly sensitive and precise chromatographic method. The percent recoveries of the inhaled drugs in their MDI were good. The method was successfully established for the quantitative analysis of FF and GLY in their combined pharmaceutical inhaler capsules to validate the therapeutic efficiency of the combined drugs in quality control labs.
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Affiliation(s)
- Yomna A Salem
- 1Medicinal Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura, 35516 Egypt.,Pharmaceutical Chemistry Department, Faculty of Pharmacy, Horus University-Egypt (HUE), New Damietta, Egypt
| | - Mohammed E A Hammouda
- 1Medicinal Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura, 35516 Egypt.,Pharmaceutical Chemistry Department, Faculty of Pharmacy, Horus University-Egypt (HUE), New Damietta, Egypt
| | - Mohamed A Abu El-Enin
- 1Medicinal Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura, 35516 Egypt
| | - Saadia M El-Ashry
- 1Medicinal Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura, 35516 Egypt
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5
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Li X, Miao J, Yin Z, Xu X, Shi H. Polypyrrole-Modified Nylon 6 Nanofibers as Adsorbent for the Extraction of Two β-Lactam Antibiotics in Water Followed by Determination with Capillary Electrophoresis. Molecules 2019; 24:molecules24122198. [PMID: 31212790 PMCID: PMC6631352 DOI: 10.3390/molecules24122198] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 06/11/2019] [Accepted: 06/11/2019] [Indexed: 12/23/2022] Open
Abstract
A solid phase membrane adsorbent—a nylon 6 nanofibers membrane coated by polypyrrole (PPy-PA6-NFsM)—was firstly synthesized and used for extraction of two β-lactam antibiotics (oxacillin and cloxacillin) in urban river water. Then the analytes were detected by capillary electrophoresis with a diode array detector (CE-DAD). The synthesized nanofibers membrane was characterized by scanning electron microscopy and a Fourier transform infrared spectrometer. The experimental conditions were optimized, including the amount used of PPy-PA6-NFsM, pH of the sample solutions, adsorption volume, and desorption conditions. Under the optimal extraction and separation conditions, the detection limits were found to be 2.0 ng/mL for both oxacillin and cloxacillin. The proposed method was applied to the determination of the two β-lactams in water samples of an urban river. The recoveries of these two β-lactams were found to be in the range 84.2–96.4%, demonstrating that PPy-PA6-NFsM has a high extraction capability for these two antibiotics. The relative standard deviations, ranging from 2.26% to 5.29% for intraday measurements and from 2.38% to 7.02% for inter-day determinations, were derived respectively.
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Affiliation(s)
- Xinghua Li
- School of Public Health, and Key Laboratory of Environment and Human Health of Hebei Province, Hebei Medical University, Shijiazhuang 050017, China.
| | - Junjie Miao
- School of Public Health, and Key Laboratory of Environment and Human Health of Hebei Province, Hebei Medical University, Shijiazhuang 050017, China.
| | - Zhendong Yin
- School of Public Health, and Key Laboratory of Environment and Human Health of Hebei Province, Hebei Medical University, Shijiazhuang 050017, China.
| | - Xiangdong Xu
- School of Public Health, and Key Laboratory of Environment and Human Health of Hebei Province, Hebei Medical University, Shijiazhuang 050017, China.
| | - Hongmei Shi
- School of Public Health, and Key Laboratory of Environment and Human Health of Hebei Province, Hebei Medical University, Shijiazhuang 050017, China.
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Hou M, Zhang M, Chen L, Gong K, Pan C, Wang Y. Amplification of lysozyme signal detected in capillary electrophoresis using mixed polymer brushes coating with switchable properties. Talanta 2019; 202:426-435. [PMID: 31171204 DOI: 10.1016/j.talanta.2019.05.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/22/2019] [Accepted: 05/02/2019] [Indexed: 12/29/2022]
Abstract
In this work, a mixed polymer brushes based on poly(2-methyl-2-oxazoline) (PMOXA) and poly(acrylic acid) (PAA) coated capillary with switchable protein adsorption/desorption properties was developed and applied for on-line extraction and preconcentration of lysozyme. The study of electroosmotic flow (EOF) and fluorescence microscope showed that the inner surface charge of PMOXA/PAA mixed brush coated capillary displayed the switchable behavior toward the change of pH value and ionic strength (I), and PMOXA/PAA mixed brushes coated capillary could adsorb high amounts of lysozyme at pH 7 (I = 10-5 M), and the most of adsorbed lysozyme could then be desorbed at pH 3 (I = 10-1 M). Subsequently, this coated capillary with switchable lysozyme adsorption/desorption ability was applied for on-line extraction and preconcentration of lysozyme during capillary electrophoresis (CE) performance. Under the process of on-line preconcentration, the detection signal (peak area) of lysozyme obtained in PMOXA/PAA coated capillary was 26 times that obtained in bare capillary under normal CE while the contour chain length of PAA was 1.56 times that of PMOXA. Moreover, the value of low detection limit (LOD) of lysozyme using above coated capillary under on-line preconcentration method reached to 4.5 × 10-9 mg/mL, and 1 × 105-fold sensitivity enhancement was realized for lysozyme as compared with the bare capillary under normal CE.
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Affiliation(s)
- Mingxin Hou
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, PR China
| | - Miao Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, PR China
| | - Lijuan Chen
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, PR China; Colllege of Materials and Chemical Engineering, West Anhui University, Luan, 237012, PR China
| | - Kai Gong
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, PR China
| | - Chao Pan
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, PR China
| | - Yanmei Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, PR China.
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González N, Grünhut M, Šrámková I, Lista AG, Horstkotte B, Solich P, Sklenářová H, Acebal CC. Flow-batch analysis of clenbuterol based on analyte extraction on molecularly imprinted polymers coupled to an in-system chromogenic reaction. Application to human urine and milk substitute samples. Talanta 2018; 178:934-942. [DOI: 10.1016/j.talanta.2017.10.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 10/16/2017] [Accepted: 10/20/2017] [Indexed: 10/18/2022]
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8
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Sun S, Wang Y, Liu X, Fu R, Yang L. Rapid and sensitive tapered-capillary microextraction combined to on-line sample stacking-capillary electrophoresis for extraction and quantification of two beta-blockers in human urine. Talanta 2017; 180:90-97. [PMID: 29332838 DOI: 10.1016/j.talanta.2017.12.035] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 12/06/2017] [Accepted: 12/12/2017] [Indexed: 01/09/2023]
Abstract
A tapered-capillary microextraction (tCap-μEx) combining with field-amplified stacking (FASI) method for CE analysis was developed. The tCap-μEx method is based on the construction of a micro solid phase extraction (SPE) column by narrowing the end of a silica capillary from 530µm (inner diameter) to 20µm, enabling the packing of 45µm sorbent particles without a frit. Various parameters that may affect the microextraction and FASI-CE analysis have been investigated and optimized. This study shows that microextraction exhibits advantages of small sample and sorbent volumes (less than 200μL sample and 2μL sorbent) and fast extraction time of 6min. The method was successfully applied for efficient determination of atenolol and metoprolol in human urine samples, with recovery of 93.7-105.5% and RSD (n=3) lower than 8.5%. Twenty-one-fold and nineteen-fold average enhancement of detection sensitivity was achieved for atenolol and metoprolol, respectively, versus the CE method without tCap-μEx and FASI. The method is environmentally friendly and allows reuse of the sorbent at least 8 times without an obvious loss in performance. The results indicate that the proposed method could be potentially applied in a wide range of doping control, clinical, forensic toxicology, food analysis and environmental analyses.
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Affiliation(s)
- Shucheng Sun
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province 130024, PR China
| | - Yujia Wang
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province 130024, PR China
| | - Xin Liu
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province 130024, PR China
| | - Rao Fu
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province 130024, PR China
| | - Li Yang
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province 130024, PR China.
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Field-Amplified Sample Injection and Solid-Phase Extraction for Sensitivity Improvement of Electrophoretic Determination of Indole-3-Acetic Acid and Indole-3-Butyric Acid in Food Samples. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-1091-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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10
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Jiang Y, He MY, Zhang WJ, Luo P, Guo D, Fang X, Xu W. Recent advances of capillary electrophoresis-mass spectrometry instrumentation and methodology. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.05.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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11
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Novel Stir Bar Array Sorptive Extraction Coupled With Gas Chromatography–Mass Spectrometry for Simultaneous Determination of Three β2-Agonist Residues in Pork. Chromatographia 2017. [DOI: 10.1007/s10337-017-3242-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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KAWAI T. Recent Studies on Online Sample Preconcentration Methods inCapillary Electrophoresis Coupled with Mass Spectrometry. CHROMATOGRAPHY 2017. [DOI: 10.15583/jpchrom.2017.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Takayuki KAWAI
- Quantitative Biology Center, RIKEN
- Japan Science and Technology Agency, PRESTO
- Graduate School of Frontier Biosciences, Osaka University
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Liu H, Gan N, Chen Y, Ding Q, Huang J, Lin S, Cao Y, Li T. Novel method for the rapid and specific extraction of multiple β
2
‐agonist residues in food by tailor‐made Monolith‐MIPs extraction disks and detection by gas chromatography with mass spectrometry. J Sep Sci 2016; 39:3578-85. [DOI: 10.1002/jssc.201600479] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 06/18/2016] [Accepted: 07/13/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Haibo Liu
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo China
| | - Ning Gan
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo China
| | - Yinji Chen
- Department of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and SafetyNanjing University of Finance and Economics Nanjing China
| | - Qingqing Ding
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo China
| | - Jie Huang
- Faculty of Marine ScienceNingbo University Ningbo China
| | - Saichai Lin
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo China
| | - Yuting Cao
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo China
| | - Tianhua Li
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo China
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Peng X, Wang H, Yang B, Zhan X, Wu Y. Field-Amplified Sample Injection-Capillary Electrophoresis for the Determination of Bisphenol A, α-Naphthol and β-Naphthol in Drinks and Lake Water. Chromatographia 2016. [DOI: 10.1007/s10337-016-3028-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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15
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Lian DS, Zhao SJ. Highly sensitive analysis of nucleic acids using capillary gel electrophoresis with ultraviolet detection based on the combination of matrix field-amplified and head-column field-amplified stacking injection. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 978-979:29-42. [DOI: 10.1016/j.jchromb.2014.11.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 11/16/2014] [Accepted: 11/20/2014] [Indexed: 12/17/2022]
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Detection limit enhancement of antiarrhythmic drugs in human plasma using capillary electrophoresis with dispersive liquid–liquid microextraction and field-amplified sample stacking method. Bioanalysis 2015; 7:21-37. [DOI: 10.4155/bio.14.175] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Background: A new capillary zone electrophoresis (CZE) with ultraviolet detection method has been developed and validated for the analysis of four antiarrhythmic drugs in human plasma samples. Methods: In this study, a dispersive liquid–liquid microextraction (DLLME) coupled with field-amplified sample stacking (FASS) was employed for biological samples clean-up and sensitivity enhancement in CZE. Results: Under optimum DLLME-FASS-CZE conditions, enhancement factors were in the range of 157–314. The method was validated over the concentration range of 20–800 ng/ml in human plasma. Inter- and intra-day precision and the accuracy were less than 20%; the detection limits ranged from 2.5 to 4.7 ng/ml. Furthermore, the validated method was successfully applied to the detection of studied drugs in patients’ plasma samples.
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17
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Sensitive analysis of amino acids and vitamin B3 in functional drinks via field-amplified stacking with reversed-field stacking in microchip electrophoresis. Talanta 2015; 131:624-31. [DOI: 10.1016/j.talanta.2014.08.051] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 08/16/2014] [Accepted: 08/18/2014] [Indexed: 01/07/2023]
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18
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Simultaneous determination of blockers and agonists by on-fiber derivatization in self-made solid-phase microextraction coating fiber. Talanta 2015; 132:915-21. [DOI: 10.1016/j.talanta.2014.07.064] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 07/19/2014] [Accepted: 07/21/2014] [Indexed: 11/22/2022]
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19
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Jiang Y, Ni Y. Automated headspace solid-phase microextraction and on-fiber derivatization for the determination of clenbuterol in meat products by gas chromatography coupled to mass spectrometry. J Sep Sci 2014; 38:418-25. [DOI: 10.1002/jssc.201400634] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 10/12/2014] [Accepted: 11/06/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Yong Jiang
- School of Life Science; Jiangxi Science and Technology Normal University; Nanchang P. R. China
| | - Yongnian Ni
- State Key Laboratory of Food Science and Technology; Nanchang University; Nanchang P. R. China
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20
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Klepárník K. Recent advances in combination of capillary electrophoresis with mass spectrometry: Methodology and theory. Electrophoresis 2014; 36:159-78. [DOI: 10.1002/elps.201400392] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 09/11/2014] [Accepted: 09/11/2014] [Indexed: 12/15/2022]
Affiliation(s)
- Karel Klepárník
- Institute of Analytical Chemistry; Academy of Sciences of the Czech Republic; Brno Czech Republic
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21
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Malá Z, Šlampová A, Křivánková L, Gebauer P, Boček P. Contemporary sample stacking in analytical electrophoresis. Electrophoresis 2014; 36:15-35. [DOI: 10.1002/elps.201400313] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 08/05/2014] [Accepted: 08/05/2014] [Indexed: 12/14/2022]
Affiliation(s)
- Zdena Malá
- Institute of Analytical Chemistry; Academy of Sciences of the Czech Republic; Brno Czech Republic
| | - Andrea Šlampová
- Institute of Analytical Chemistry; Academy of Sciences of the Czech Republic; Brno Czech Republic
| | - Ludmila Křivánková
- Institute of Analytical Chemistry; Academy of Sciences of the Czech Republic; Brno Czech Republic
| | - Petr Gebauer
- Institute of Analytical Chemistry; Academy of Sciences of the Czech Republic; Brno Czech Republic
| | - Petr Boček
- Institute of Analytical Chemistry; Academy of Sciences of the Czech Republic; Brno Czech Republic
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22
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Progress in stacking techniques based on field amplification of capillary electrophoresis. Anal Bioanal Chem 2014; 406:6129-50. [DOI: 10.1007/s00216-014-8062-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Revised: 07/21/2014] [Accepted: 07/22/2014] [Indexed: 02/07/2023]
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23
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Mi J, Li S, Xu H, Liang W, Sun T. Rapid analysis of three β-agonist residues in food of animal origin by automated on-line solid-phase extraction coupled to liquid chromatography and tandem mass spectrometry. J Sep Sci 2014; 37:2431-8. [DOI: 10.1002/jssc.201400442] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 05/21/2014] [Accepted: 06/02/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Jiebo Mi
- Tianjin Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China; Tianjin China
| | - Shujing Li
- Tianjin Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China; Tianjin China
| | - Hong Xu
- Tianjin Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China; Tianjin China
| | - Wei Liang
- Esensing Analytical Technology; Beijing China
| | - Tao Sun
- Esensing Analytical Technology; Beijing China
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Zhang HT, Li Z, Zhang JB, Zhang Y, Ye JN, Chu QC, Zhang MJ. Simultaneous determination of catecholamines and related metabolites by capillary electrophoresis with amperometric detection. Chem Res Chin Univ 2013. [DOI: 10.1007/s40242-013-3132-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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