1
|
Liu G, Lin Y, Li S, Shi C, Zhang D, Chen L. Degradation of ciprofloxacin by persulfate activated by Fe(III)-doped BiOCl composite photocatalyst. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:87830-87850. [PMID: 37434054 DOI: 10.1007/s11356-023-28490-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 06/24/2023] [Indexed: 07/13/2023]
Abstract
Fe-BOC-X photocatalyst was successfully prepared by solvothermal method. The photocatalytic activity of Fe-BOC-X was determined by ciprofloxacin (CIP), a typical fluoroquinolone antibiotic. Under sunlight irradiation, all Fe-BOC-X showed better CIP removal performance than original BiOCl. In comparison, the photocatalyst with iron content of 50 wt% (Fe-BOC-3) has excellent structural stability and the best adsorption photodegradation efficiency. The removal rate of CIP (10 mg/L) by Fe-BOC-3 (0.6 g/L) reached 81.4% within 90 min. At the same time, the effects of photocatalyst dosage, pH, persulfate, persulfate concentration, and combinations of different systems (PS, Fe-BOC-3, Vis/PS, Vis/Fe-BOC-3, Fe-BOC-3/PS, and Vis/Fe-BOC-3/PS) on the reaction were systematically discussed. In reactive species trapping experiments, electron spin resonance (ESR) signals revealed that the photogenerated holes (h+), hydroxyl radical (•OH), sulfate radical (•SO4-), and superoxide radical (•O2-) played an important role in CIP degradation; hydroxyl radicals (•OH) and sulfate radicals (•SO4-) play a major role. Various characterization methods have demonstrated that Fe-BOC-X has larger specific surface area and pore volume than original BiOCl. UV-vis DRS indicate that Fe-BOC-X has wider visible light absorption and faster photocarrier transfer and provides abundant surface oxygen absorption sites for effective molecular oxygen activation. Accordingly, a large number of active species were produced and participated in the photocatalytic process, thus effectively promoting the degradation of ciprofloxacin. Based on HPLC-MS analysis, two possible decomposition pathways of CIP were finally proposed. The main degradation pathways of CIP are mainly due to the high electron density of piperazine ring in CIP molecule, which is mainly attacked by various free radicals. The main reactions include piperazine ring opening, decarbonylation, decarboxylation, and fluorine substitution. This study can better open up a new way for the design of visible light driven photocatalyst and provide more ideas for the removal of CIP in water environment.
Collapse
Affiliation(s)
- Gen Liu
- School of Environment, Northeast Normal University, No. 2555 Jingyue Street, Changchun, 130117, Jilin, China
| | - Yingzi Lin
- Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun, 130118, China.
- School of Municipal & Environmental Engineering, Jilin Jianzhu University, Changchun, 130118, China.
| | - Siwen Li
- School of Environment, Northeast Normal University, No. 2555 Jingyue Street, Changchun, 130117, Jilin, China
| | - Chunyan Shi
- The University of Kitakyushu, 1-1 Hibikino, Wakamatsuku, Kitakyushu, Fukuoka, Japan
| | - Dongyan Zhang
- School of Municipal & Environmental Engineering, Jilin Jianzhu University, Changchun, 130118, China
| | - Lei Chen
- School of Municipal & Environmental Engineering, Jilin Jianzhu University, Changchun, 130118, China
| |
Collapse
|
2
|
Gebreyohannes BE, Dube S, Nindi MM. Simultaneous Determination of Multiple Contaminants in Chicken Liver Using Dispersive Liquid-Liquid Microextraction (DLLME) Detected by LC-HRMS/MS. Foods 2023; 12:2594. [PMID: 37444332 DOI: 10.3390/foods12132594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/15/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
Simultaneous determination of a mixture of food contaminants, including pesticides, sulphonamides, fluoroquinolones, anthelmintics, and aflatoxin B1, in solid biological samples (chicken liver) by dispersive liquid-liquid microextraction/liquid chromatography-high resolution mass spectrometry (DLLME/LC-HRMS) is presented. Previous work focused on the application of DLLME to single-class contaminants. In this work, the DLLME extraction method has been extended to complex multiresidues in the biological matrix. The first part of this study was the selection of an appropriate solvent that enabled the dissolution of analytes from the chicken livers. The matrix-matched calibration curves showed good linearity in the range 0.5-50.0 µg kg-1 for aflatoxin B1 and 50-500 µg kg-1 for pesticides, fluoroquinolones, sulphonamides, and anthelmintics, with a coefficient of determination (R2) values of 0.9916-0.9967. The mean recoveries were in the range of 80.4-96.3%, and the relative standard deviation (RSD) values were in the range of 1.53-8.98%. The limit of detection (LOD) and the limit of quantification (LOQ) values were 0.03 µg kg-1 and 0.09 µg kg-1, respectively, for aflatoxin B1, and for pesticides, fluoroquinolones, sulphonamides, and anthelmintics, they were in the range of 0.011-1.197 µg kg-1 and 0.150-2.579 µg kg-1, respectively. The developed method was compared with the standard solid phase extraction (SPE) method, and there was no significant difference between the two methods.
Collapse
Affiliation(s)
- Belete Eshetu Gebreyohannes
- Department of Chemistry, The Science Campus, College of Science Engineering and Technology, University of South Africa, Corner of Christiaan de Wet Road & Pioneer Avenue, Florida 1709, South Africa
| | - Simiso Dube
- Department of Chemistry, The Science Campus, College of Science Engineering and Technology, University of South Africa, Corner of Christiaan de Wet Road & Pioneer Avenue, Florida 1709, South Africa
| | - Mathew Muzi Nindi
- Institute for Nanotechnology and Water Sustainability, The Science Campus, College of Science Engineering and Technology, University of South Africa, Corner of Christiaan de Wet Road & Pioneer Avenue, Florida 1709, South Africa
| |
Collapse
|
3
|
Seyfinejad B, Jouyban A. Capillary electrophoresis-mass spectrometry in pharmaceutical and biomedical analyses. J Pharm Biomed Anal 2022; 221:115059. [DOI: 10.1016/j.jpba.2022.115059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 09/05/2022] [Accepted: 09/14/2022] [Indexed: 10/31/2022]
|
4
|
Fast and highly efficient liquid chromatographic methods for qualification and quantification of antibiotic residues from environmental waste. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
5
|
Knoll S, Rösch T, Huhn C. Trends in sample preparation and separation methods for the analysis of very polar and ionic compounds in environmental water and biota samples. Anal Bioanal Chem 2020; 412:6149-6165. [PMID: 32710277 PMCID: PMC7442764 DOI: 10.1007/s00216-020-02811-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 06/29/2020] [Accepted: 07/08/2020] [Indexed: 12/25/2022]
Abstract
Recent years showed a boost in knowledge about the presence and fate of micropollutants in the environment. Instrumental and methodological developments mainly in liquid chromatography coupled to mass spectrometry hold a large share in this success story. These techniques soon complemented gas chromatography and enabled the analysis of more polar compounds including pesticides but also household chemicals, food additives, and pharmaceuticals often present as traces in surface waters. In parallel, sample preparation techniques evolved to extract and enrich these compounds from biota and water samples. This review article looks at very polar and ionic compounds using the criterion log P ≤ 1. Considering about 240 compounds, we show that (simulated) log D values are often even lower than the corresponding log P values due to ionization of the compounds at our reference pH of 7.4. High polarity and charge are still challenging characteristics in the analysis of micropollutants and these compounds are hardly covered in current monitoring strategies of water samples. The situation is even more challenging in biota analysis given the large number of matrix constituents with similar properties. Currently, a large number of sample preparation and separation approaches are developed to meet the challenges of the analysis of very polar and ionic compounds. In addition to reviewing them, we discuss some trends: for sample preparation, preconcentration and purification efforts by SPE will continue, possibly using upcoming mixed-mode stationary phases and mixed beds in order to increase comprehensiveness in monitoring applications. For biota analysis, miniaturization and parallelization are aspects of future research. For ionic or ionizable compounds, we see electromembrane extraction as a method of choice with a high potential to increase throughput by automation. For separation, predominantly coupled to mass spectrometry, hydrophilic interaction liquid chromatography applications will increase as the polarity range ideally complements reversed phase liquid chromatography, and instrumentation and expertise are available in most laboratories. Two-dimensional applications have not yet reached maturity in liquid-phase separations to be applied in higher throughput. Possibly, the development and commercial availability of mixed-mode stationary phases make 2D applications obsolete in semi-targeted applications. An interesting alternative will enter routine analysis soon: supercritical fluid chromatography demonstrated an impressive analyte coverage but also the possibility to tailor selectivity for targeted approaches. For ionic and ionizable micropollutants, ion chromatography and capillary electrophoresis are amenable but may be used only for specialized applications such as the analysis of halogenated acids when aspects like desalting and preconcentration are solved and the key advantages are fully elaborated by further research. Graphical abstract.
Collapse
Affiliation(s)
- Sarah Knoll
- Institute of Physical and Theoretical Chemistry, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, Tübingen, Germany
| | - Tobias Rösch
- Institute of Physical and Theoretical Chemistry, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, Tübingen, Germany
| | - Carolin Huhn
- Institute of Physical and Theoretical Chemistry, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, Tübingen, Germany.
| |
Collapse
|
6
|
Khatibi SA, Hamidi S, Siahi-Shadbad MR. Application of Liquid-Liquid Extraction for the Determination of Antibiotics in the Foodstuff: Recent Trends and Developments. Crit Rev Anal Chem 2020; 52:327-342. [DOI: 10.1080/10408347.2020.1798211] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Seyed Amin Khatibi
- Food and Drug Safety Research Center, Tabriz University of Medical Science, Tabriz, Iran
| | - Samin Hamidi
- Food and Drug Safety Research Center, Tabriz University of Medical Science, Tabriz, Iran
| | - Mohammad Reza Siahi-Shadbad
- Food and Drug Safety Research Center, Tabriz University of Medical Science, Tabriz, Iran
- Department of Pharmaceutical and Food Control, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
7
|
Egunova OR, Reshetnikova IS, Kazimirova KO, Shtykov SN. Magnetic Solid-Phase Extraction and Fluorimetric Determination of Some Fluoroquinolones. JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1134/s1061934820010062] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
8
|
Wang W, Gong Z, Yang S, Xiong T, Wang D, Fan M. Fluorescent and visual detection of norfloxacin in aqueous solutions with a molecularly imprinted polymer coated paper sensor. Talanta 2020; 208:120435. [DOI: 10.1016/j.talanta.2019.120435] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/25/2019] [Accepted: 10/03/2019] [Indexed: 10/25/2022]
|
9
|
Advances in the Analysis of Veterinary Drug Residues in Food Matrices by Capillary Electrophoresis Techniques. Molecules 2019; 24:molecules24244617. [PMID: 31861089 PMCID: PMC6943715 DOI: 10.3390/molecules24244617] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/13/2019] [Accepted: 12/14/2019] [Indexed: 12/03/2022] Open
Abstract
In the last years, the European Commission has adopted restrictive directives on food quality and safety in order to protect animal and human health. Veterinary drugs represent an important risk and the need to have sensitive and fast analytical techniques to detect and quantify them has become mandatory. Over the years, the availability of different modes, interfaces, and formats has improved the versatility, sensitivity, and speed of capillary electrophoresis (CE) techniques. Thus, CE represents a powerful tool for the analysis of a large variety of food matrices and food-related molecules with important applications in food quality and safety. This review focuses the attention of CE applications over the last decade on the detection of different classes of drugs (used as additives in animal food or present as contaminants in food products) with a potential risk for animal and human health. In addition, considering that the different sample preparation procedures have strongly contributed to CE sensitivity and versatility, the most advanced sample pre-concentration techniques are discussed here.
Collapse
|
10
|
He T, Xu Z, Ren J. Pressure-assisted electrokinetic injection stacking for seven typical antibiotics in waters to achieve μg/L level analysis by capillary electrophoresis with UV detection. Microchem J 2019. [DOI: 10.1016/j.microc.2019.02.057] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
11
|
Majdinasab M, Mitsubayashi K, Marty JL. Optical and Electrochemical Sensors and Biosensors for the Detection of Quinolones. Trends Biotechnol 2019; 37:898-915. [PMID: 30777309 DOI: 10.1016/j.tibtech.2019.01.004] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/10/2019] [Accepted: 01/14/2019] [Indexed: 10/27/2022]
Abstract
One major concern associated with food safety is related to residual effects of antibiotics that are widely used to treat animals and result in antimicrobial resistance. Among different groups of antibiotic, the use of quinolones in livestock is of major concern due to the significance of these antimicrobial drugs for the treatment of a range of infectious diseases in humans. Therefore, it is desirable to develop reliable methods for the rapid, sensitive, and on-site detection of quinolone residue levels in animal-derived foods to ensure food safety. Sensors and biosensors are promising future platforms for rapid and on-site monitoring of antibiotic residues. In this review, we focus on recent advancements and modern approaches in quinolone sensors and biosensors.
Collapse
Affiliation(s)
- Marjan Majdinasab
- Department of Food Science and Technology, School of Agriculture, Shiraz University, Shiraz 71441-65186, Iran
| | - Kohji Mitsubayashi
- Department of Biomedical Devices and Instrumentation, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo 101-0062, Japan
| | - Jean Louis Marty
- Biocapteurs-Analyses-Environnement (BAE), Universite de Perpignan Via Domitia, Perpignan Cedex 66860, France.
| |
Collapse
|
12
|
Applications and opportunities of experimental design for the dispersive liquid–liquid microextraction method – A review. Talanta 2018; 190:335-356. [DOI: 10.1016/j.talanta.2018.08.002] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 07/31/2018] [Accepted: 08/01/2018] [Indexed: 12/22/2022]
|
13
|
Improved resolution of fluoroquinolones using cetyltrimethyl ammonium bromide–micellar electrokinetic chromatography and its application to residue analysis in surface water. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1092:306-312. [DOI: 10.1016/j.jchromb.2018.06.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 06/04/2018] [Accepted: 06/14/2018] [Indexed: 11/21/2022]
|
14
|
Zhang XH, Deng Y, Zhao MZ, Zhou YL, Zhang XX. Highly-sensitive detection of eight typical fluoroquinolone antibiotics by capillary electrophoresis-mass spectroscopy coupled with immunoaffinity extraction. RSC Adv 2018. [DOI: 10.1039/c7ra12557g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
An off-line procedure, immunoaffinity extraction (IAE), followed by capillary electrophoresis-mass spectroscopy (CE-MS) has been developed for the simultaneous determination of eight typical FQs in environmental water samples.
Collapse
Affiliation(s)
- Xiao-Hui Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering
- College of Chemistry
- Peking University
- Beijing 100871
| | - Yan Deng
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering
- College of Chemistry
- Peking University
- Beijing 100871
| | - Ming-Zhe Zhao
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering
- College of Chemistry
- Peking University
- Beijing 100871
| | - Ying-Lin Zhou
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering
- College of Chemistry
- Peking University
- Beijing 100871
| | - Xin-Xiang Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering
- College of Chemistry
- Peking University
- Beijing 100871
| |
Collapse
|
15
|
Zhang Z, Cheng H. Recent Development in Sample Preparation and Analytical Techniques for Determination of Quinolone Residues in Food Products. Crit Rev Anal Chem 2017; 47:223-250. [DOI: 10.1080/10408347.2016.1266924] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Zhichao Zhang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, P. R. China
- University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Hefa Cheng
- MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, P. R. China
| |
Collapse
|
16
|
Arsenic speciation based on amine-functionalized bimodal mesoporous silica nanoparticles by ultrasound assisted-dispersive solid-liquid multiple phase microextraction. Microchem J 2017. [DOI: 10.1016/j.microc.2016.08.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
17
|
Czyrski A. Analytical Methods for Determining Third and Fourth Generation Fluoroquinolones: A Review. Chromatographia 2016; 80:181-200. [PMID: 28216694 PMCID: PMC5288422 DOI: 10.1007/s10337-016-3224-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 12/01/2016] [Accepted: 12/06/2016] [Indexed: 01/20/2023]
Abstract
ABSTRACT Fluoroquinolones of the third and fourth generation posses wide bactericidal activity. Monitoring concentrations of antibacterial agents provides effective therapy and prevents the increase of bacterial resistance to antibiotics. The pharmacodynamic parameters that best describe fluoroquinalone activity are AUC/MIC and Cmax/MIC. Determining the level of this type of drug is essential to reach the effective concentration that inhibits the growth of bacteria. Determining the pharmaceutical formulation confirms the purity of a substance. Many methods have been developed to determine the level of these substances. They involve mainly the following analytical techniques: chromatography, capillary electrophoresis, and spectroscopy. The separation techniques were combined with different measuring devices, such as ultraviolet (UV), fluorescence detector (FLD), diode array detector (DAD), and mass spectrometry (MS). The analytical procedures require proper sample pre-conditioning such as protein precipitation, extraction techniques, filtration, or dilution. This paper reviews the reported analytical methods for the determining representatives of the third and fourth generation of fluoroquinolones. Attention was paid to pre-conditioning of the samples and the applied mobile phase. This report might be helpful in the selection of the proper procedure in determining the abovementioned drugs in different matrices. GRAPHICAL ABSTRACT
Collapse
Affiliation(s)
- Andrzej Czyrski
- The Department of Physical Pharmacy and Pharmacokinetics, Poznań University of Medical Sciences, 6 Swiecickego Street, 60-781 Poznan, Poland
| |
Collapse
|
18
|
Bioanalytical challenge: A review of environmental and pharmaceuticals contaminants in human milk. J Pharm Biomed Anal 2016; 130:318-325. [PMID: 27372148 DOI: 10.1016/j.jpba.2016.06.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 06/08/2016] [Indexed: 12/31/2022]
Abstract
An overview of bioanalytical methods for the determination of environmental and pharmaceutical contaminants in human milk is presented. The exposure of children to these contaminants through lactation has been widely investigated. The human milk contains diverse proteins, lipids, and carbohydrates and the concentration of these components is drastically altered during the lactation period providing a high degree of an analytical challenge. Sample collection and pretreatment are still considered the Achilles' heel. This review presents liquid chromatographic methods developed in the last 10 years for this complex matrix with focuses in the extraction and quantification steps. Green sample preparation protocols have been emphasized.
Collapse
|
19
|
Zeng H, Chen J, Zhang C, Huang XA, Sun Y, Xu Z, Lei H. Broad-Specificity Chemiluminescence Enzyme Immunoassay for (Fluoro)quinolones: Hapten Design and Molecular Modeling Study of Antibody Recognition. Anal Chem 2016; 88:3909-16. [PMID: 26976361 DOI: 10.1021/acs.analchem.6b00082] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
On the basis of the structural features of (fluoro)quinolones (FQs), pazufloxacin was first used as a generic immunizing hapten to raise a broad-specificity antibody. The obtained polyclonal antibody exhibited broad cross-reactivity ranging from 5.19% to 478.77% with 21 FQs. Furthermore, the antibody was able to recognize these FQs below their maximum residue limits (MRLs) in an indirect competitive chemiluminescence enzyme immunoassay (ic-CLEIA), with the limit of detection (LOD) ranging from 0.10 to 33.83 ng/mL. For simply pretreated milk samples with spiked FQs, the ic-CLEIA exhibited an excellent recovery with a range of 84.6-106.9% and an acceptable coefficient of variation below 15%, suggesting its suitability and reliability for the use of a promising tool to detect FQs. Meanwhile, comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA) models, with statistically significant correlation coefficients (q(2)CoMFA = 0.559, r(2)CoMFA = 0.999; q(2)CoMSIA = 0.559, r(2)CoMSIA = 0.994), were established to investigate the antibody recognition mechanism. These two models revealed that in the antibody, the active cavity binding FQs' 7-position substituents worked together with another cavity (binding FQs' 1-position groups) to crucially endow the high cross-reactivity. This investigation will be significant for better exploring the recognition mechanism and for designing new haptens.
Collapse
Affiliation(s)
- Haopeng Zeng
- Guangdong Provincial Key Laboratory of Food Quality and Safety/College of Food Science, South China Agricultural University , Guangzhou, 510642, P. R. China
| | - Jiahong Chen
- Guangdong Provincial Key Laboratory of Food Quality and Safety/College of Food Science, South China Agricultural University , Guangzhou, 510642, P. R. China
| | - Chijian Zhang
- Guangdong Provincial Key Laboratory of Food Quality and Safety/College of Food Science, South China Agricultural University , Guangzhou, 510642, P. R. China
| | - Xin-An Huang
- Tropical Medicine Institute & South China Chinese Medicine Collaborative Innovation Center, Guangzhou University of Chinese Medicine , Guangzhou, 510405, P. R. China
| | - Yuanming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety/College of Food Science, South China Agricultural University , Guangzhou, 510642, P. R. China
| | - Zhenlin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety/College of Food Science, South China Agricultural University , Guangzhou, 510642, P. R. China
| | - Hongtao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety/College of Food Science, South China Agricultural University , Guangzhou, 510642, P. R. China
| |
Collapse
|
20
|
Wang L, Huang T, Cao HX, Yuan QX, Liang ZP, Liang GX. Application of Air-Assisted Liquid-Liquid Microextraction for Determination of Some Fluoroquinolones in Milk Powder and Egg Samples: Comparison with Conventional Dispersive Liquid-Liquid Microextraction. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0409-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
21
|
Chromium speciation in human blood samples based on acetyl cysteine by dispersive liquid–liquid biomicroextraction and in-vitro evaluation of acetyl cysteine/cysteine for decreasing of hexavalent chromium concentration. J Pharm Biomed Anal 2016; 118:1-8. [DOI: 10.1016/j.jpba.2015.10.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 10/11/2015] [Accepted: 10/13/2015] [Indexed: 11/24/2022]
|
22
|
Alshana U, Ertaş N, Göğer NG. Determination of parabens in human milk and other food samples by capillary electrophoresis after dispersive liquid–liquid microextraction with back-extraction. Food Chem 2015; 181:1-8. [DOI: 10.1016/j.foodchem.2015.02.074] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 02/04/2015] [Accepted: 02/14/2015] [Indexed: 10/24/2022]
|
23
|
Salt De-Emulsification Dispersive Liquid-Liquid Microextraction and Back-Extraction Combined with Sweeping Micellar Electrokinetic Capillary Chromatography for Detection of Triazine Herbicides in Honey. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0231-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
24
|
Springer VH, Lista AG. In-line coupled single drop liquid-liquid-liquid microextraction with capillary electrophoresis for determining fluoroquinolones in water samples. Electrophoresis 2015; 36:1572-9. [DOI: 10.1002/elps.201400602] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 03/02/2015] [Accepted: 03/03/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Valeria H. Springer
- Analytical Chemistry Section; INQUISUR (UNS-CONICET); Bahía Blanca Buenos Aires Argentina
| | - Adriana G. Lista
- Analytical Chemistry Section; INQUISUR (UNS-CONICET); Bahía Blanca Buenos Aires Argentina
| |
Collapse
|
25
|
Xu L, Luan F, Liu H, Gao Y. Dispersive liquid-liquid microextraction combined with non-aqueous capillary electrophoresis for the determination of imazalil, prochloraz and thiabendazole in apples, cherry tomatoes and grape juice. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2015; 95:745-751. [PMID: 25048793 DOI: 10.1002/jsfa.6834] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 06/30/2014] [Accepted: 07/16/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND Fruit and vegetables are frequently treated with fungicides to reduce possible spoilage. As a result, fungicide residues may be accumulated in derived products. This important group of chemical compounds has been heavily regulated because of their potential toxicity. Therefore, a simple and rapid method to determine fungicides is desired. RESULTS A simple non-aqueous capillary electrophoresis (NACE) method based on dispersive liquid-liquid microextraction (DLLME) has been proposed for the determination of imazalil, prochloraz and thiabendazole fungicides in fruits and juice samples. Separation buffer consisted of a methanol-acetonitrile mixture (35:65, v/v) containing 30 mmol L⁻¹ ammonium chloride and 0.5% phosphoric acid. The optimum DLLME conditions were 80 µL trichloromethane as extraction solvent, 0.5 mL tetrahydrofuran as disperser solvent, sample solution pH at 6.0, 5% (w/v) NaCl and 10 s extraction time. Recoveries obtained for various samples ranged from 72% to 102%, with relative standard deviation lower than 6.4%. The limits of detection ranged from 0.47 to 0.72 µg kg⁻¹. CONCLUSION The proposed method takes the advantages of DLLME and NACE. It is rapid, accurate, sensitive and reproducible for the determination of imazalil, prochloraz and thiabendazole in fruit samples.
Collapse
Affiliation(s)
- Lina Xu
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, People's Republic of China
| | | | | | | |
Collapse
|
26
|
He H, Liu S, Meng Z, Hu S. Dispersive liquid–liquid microextraction for the determination of phenols by acetonitrile stacking coupled with sweeping-micellar electrokinetic chromatography with large-volume injection. J Chromatogr A 2014; 1361:291-8. [DOI: 10.1016/j.chroma.2014.08.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 07/30/2014] [Accepted: 08/05/2014] [Indexed: 10/24/2022]
|
27
|
Lombardo-Agüí M, Cruces-Blanco C, García-Campaña AM, Gámiz-Gracia L. Multiresidue analysis of quinolones in water by ultra-high perfomance liquid chromatography with tandem mass spectrometry using a simple and effective sample treatment. J Sep Sci 2014; 37:2145-52. [DOI: 10.1002/jssc.201400223] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 05/09/2014] [Accepted: 05/14/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Manuel Lombardo-Agüí
- Department of Analytical Chemistry, Faculty of Sciences; Campus Fuentenueva; Granada Spain
| | - Carmen Cruces-Blanco
- Department of Analytical Chemistry, Faculty of Sciences; Campus Fuentenueva; Granada Spain
| | - Ana M. García-Campaña
- Department of Analytical Chemistry, Faculty of Sciences; Campus Fuentenueva; Granada Spain
| | - Laura Gámiz-Gracia
- Department of Analytical Chemistry, Faculty of Sciences; Campus Fuentenueva; Granada Spain
| |
Collapse
|
28
|
D’Orazio G, Asensio-Ramos M, Hernández-Borges J, Fanali S, Rodríguez-Delgado MÁ. Estrogenic compounds determination in water samples by dispersive liquid–liquid microextraction and micellar electrokinetic chromatography coupled to mass spectrometry. J Chromatogr A 2014; 1344:109-21. [DOI: 10.1016/j.chroma.2014.04.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 04/02/2014] [Accepted: 04/03/2014] [Indexed: 11/16/2022]
|
29
|
Dziomba S, Kowalski P, Słomińska A, Bączek T. Field-amplified sample injection coupled with pseudo-isotachophoresis technique for sensitive determination of selected psychiatric drugs in human urine samples after dispersive liquid–liquid microextraction. Anal Chim Acta 2014; 811:88-93. [DOI: 10.1016/j.aca.2013.12.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 12/12/2013] [Accepted: 12/18/2013] [Indexed: 11/29/2022]
|
30
|
Breadmore MC, Shallan AI, Rabanes HR, Gstoettenmayr D, Abdul Keyon AS, Gaspar A, Dawod M, Quirino JP. Recent advances in enhancing the sensitivity of electrophoresis and electrochromatography in capillaries and microchips (2010-2012). Electrophoresis 2013; 34:29-54. [PMID: 23161056 DOI: 10.1002/elps.201200396] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 09/03/2012] [Accepted: 09/04/2012] [Indexed: 12/21/2022]
Abstract
CE has been alive for over two decades now, yet its sensitivity is still regarded as being inferior to that of more traditional methods of separation such as HPLC. As such, it is unsurprising that overcoming this issue still generates much scientific interest. This review continues to update this series of reviews, first published in Electrophoresis in 2007, with updates published in 2009 and 2011 and covers material published through to June 2012. It includes developments in the field of stacking, covering all methods from field amplified sample stacking and large volume sample stacking, through to isotachophoresis, dynamic pH junction and sweeping. Attention is also given to online or inline extraction methods that have been used for electrophoresis.
Collapse
Affiliation(s)
- Michael C Breadmore
- Australian Centre for Research on Separation Science, School of Chemistry, University of Tasmania, Hobart, Tasmania, Australia.
| | | | | | | | | | | | | | | |
Collapse
|
31
|
Yan H, Wang H. Recent development and applications of dispersive liquid–liquid microextraction. J Chromatogr A 2013; 1295:1-15. [DOI: 10.1016/j.chroma.2013.04.053] [Citation(s) in RCA: 192] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Accepted: 04/16/2013] [Indexed: 11/29/2022]
|
32
|
Alshana U, Göğer NG, Ertaş N. Dispersive liquid–liquid microextraction combined with field-amplified sample stacking in capillary electrophoresis for the determination of non-steroidal anti-inflammatory drugs in milk and dairy products. Food Chem 2013; 138:890-7. [DOI: 10.1016/j.foodchem.2012.11.121] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 11/13/2012] [Accepted: 11/17/2012] [Indexed: 11/25/2022]
|
33
|
Herrera-Herrera AV, Hernández-Borges J, Borges-Miquel TM, Rodríguez-Delgado MÁ. Dispersive liquid–liquid microextraction combined with ultra-high performance liquid chromatography for the simultaneous determination of 25 sulfonamide and quinolone antibiotics in water samples. J Pharm Biomed Anal 2013; 75:130-7. [DOI: 10.1016/j.jpba.2012.11.026] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Revised: 11/12/2012] [Accepted: 11/16/2012] [Indexed: 10/27/2022]
|
34
|
Airado-Rodríguez D, Cruces-Blanco C, García-Campaña AM. Dispersive liquid-liquid microextraction prior to field-amplified sample injection for the sensitive analysis of 3,4-methylenedioxymethamphetamine, phencyclidine and lysergic acid diethylamide by capillary electrophoresis in human urine. J Chromatogr A 2012; 1267:189-97. [PMID: 23141624 DOI: 10.1016/j.chroma.2012.10.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Revised: 10/08/2012] [Accepted: 10/09/2012] [Indexed: 01/13/2023]
Abstract
A novel capillary zone electrophoresis (CZE) with ultraviolet detection method has been developed and validated for the analysis of 3,4-methylenedioxymethamphetamine (MDMA), lysergic acid diethylamide (LSD) and phencyclidine (PCP) in human urine. The separation of these three analytes has been achieved in less than 8 min in a 72-cm effective length capillary with 50-μm internal diameter. 100 mM NaH(2)PO(4)/Na(2)HPO(4), pH 6.0 has been employed as running buffer, and the separation has been carried out at temperature and voltage of 20°C, and 25kV, respectively. The three drugs have been detected at 205 nm. Field amplified sample injection (FASI) has been employed for on-line sample preconcentration. FASI basically consists in a mismatch between the electric conductivity of the sample and that of the running buffer and it is achieved by electrokinetically injecting the sample diluted in a solvent of lower conductivity than that of the carrier electrolyte. Ultrapure water resulted to be the better sample solvent to reach the greatest enhancement factor. Injection voltage and time have been optimized to 5 kV and 20s, respectively. The irreproducibility associated to electrokinetic injection has been correcting by using tetracaine as internal standard. Dispersive liquid-liquid microextraction (DLLME) has been employed as sample treatment using experimental design and response surface methodology for the optimization of critical variables. Linear responses were found for MDMA, PCP and LSD in presence of urine matrix between 10.0 and 100 ng/mL approximately, and LODs of 1.00, 4.50, and 4.40 ng/mL were calculated for MDMA, PCP and LSD, respectively. The method has been successfully applied to the analysis of the three drugs of interest in human urine with satisfactory recovery percentages.
Collapse
Affiliation(s)
- Diego Airado-Rodríguez
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, Granada, Spain
| | | | | |
Collapse
|
35
|
Wen Y, Li J, Ma J, Chen L. Recent advances in enrichment techniques for trace analysis in capillary electrophoresis. Electrophoresis 2012; 33:2933-52. [PMID: 23019127 DOI: 10.1002/elps.201200240] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 06/06/2012] [Accepted: 06/28/2012] [Indexed: 01/25/2023]
Abstract
CE is gaining great popularity as a well-established separation technique for many fields such as pharmaceutical research, clinical application, environmental monitoring, and food analysis, owing to its high resolving power, rapidity, and small amount of samples and reagents required. However, the sensitivity in CE analysis is still considered as being inferior to that in HPLC analysis. Diverse enrichment methods and techniques have been increasingly developed for overcoming this issue. In this review, we summarize the recent advances in enrichment techniques containing off-line preconcentration (sample preparation) and on-line concentration (sample stacking) to enhancing sensitivity in CE for trace analysis over the last 5 years. Some relatively new cleanup and preconcentration methods involving the use of dispersive liquid-liquid microextraction, supercritical fluid extraction, matrix solid-phase dispersion, etc., and the continued use and improvement of conventional SPE, have been comprehensively reviewed and proved effective preconcentration alternatives for liquid, semisolid, and solid samples. As for CE on-line stacking, we give an overview of field amplication, sweeping, pH regulation, and transient isotachophoresis, and the coupling of multiple modes. Moreover, some limitations and comparisons related to such methods/techniques are also discussed. Finally, the combined use of various enrichment techniques and some significant attempts are proposed to further promote analytical merits in CE.
Collapse
Affiliation(s)
- Yingying Wen
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research-YIC, Chinese Academy of Sciences-CAS, Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, YICCAS, Yantai, P. R. China
| | | | | | | |
Collapse
|
36
|
Review of recent developments of on-line sample stacking techniques and their application in capillary electrophoresis. OPEN CHEM 2012. [DOI: 10.2478/s11532-012-0007-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
AbstractCapillary electrophoresis (CE) has become one of the most useful tools in separation science because of its high separation efficiency, low cost, versatility, ease of sample preparation and automation. However, some limitations of CE, such as poor concentration sensitivity due to its lower sample loading and shorter optical path length, limits its further applications in separation science. In order to solve this problem, various on-line sample preconcentration techniques such as transient isotachophoresis preconcentration, field-enhanced sample stacking, micelle to solvent stacking, micelle collapse, dynamic pH junction, sweeping, solid phase extraction, single drop microextraction and liquid phase microextraction have been combined with CE. Recent developments, applications and some variants together with different combinations of these techniques integrating in CE are reviewed here and our discussions will be confined to the past three years (2008–2011).
Collapse
|
37
|
Zhou C, Tong S, Chang Y, Jia Q, Zhou W. Ionic liquid-based dispersive liquid-liquid microextraction with back-extraction coupled with capillary electrophoresis to determine phenolic compounds. Electrophoresis 2012; 33:1331-8. [DOI: 10.1002/elps.201100469] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
38
|
Determination of quinolones of veterinary use in bee products by ultra-high performance liquid chromatography–tandem mass spectrometry using a QuEChERS extraction procedure. Talanta 2012; 93:193-9. [DOI: 10.1016/j.talanta.2012.02.011] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Revised: 02/02/2012] [Accepted: 02/06/2012] [Indexed: 11/22/2022]
|
39
|
Kohler I, Schappler J, Sierro T, Rudaz S. Dispersive liquid-liquid microextraction combined with capillary electrophoresis and time-of-flight mass spectrometry for urine analysis. J Pharm Biomed Anal 2012; 73:82-9. [PMID: 22494520 DOI: 10.1016/j.jpba.2012.03.036] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Revised: 03/16/2012] [Accepted: 03/17/2012] [Indexed: 10/28/2022]
Abstract
The combination of dispersive liquid-liquid microextraction (DLLME) with capillary electrophoresis (CE) and a time-of-flight mass spectrometer (TOF-MS) was evaluated for the toxicological screening in urine samples. A methodology based on design of experiments (DOE) was implemented to increase the extraction efficiency. Dichloromethane and isopropanol were selected as the extraction and dispersing solvents, respectively. Seven factors for DLLME were screened with the help of a Plackett-Burmann DOE using two model compounds before fine investigation of the important parameters to maximise the compound extraction. These experiments were performed in the CE-UV configuration to overcome potential MS matrix effects. The performance of the entire procedure was then evaluated using CE-ESI-TOF-MS. With a preconcentration factor of more than 130, the highly sensitive DLLME-CE-ESI-TOF-MS method allowed for the detection of 30 toxicological compounds (i.e., amphetamines and their derivatives, opiates, cocaine and its metabolites and pharmaceuticals) in urine with limits of detection in the sub-ng/mL level and was used to analyse real toxicological samples. The combination of DLLME and CE was particularly attractive because of the small amount of organic solvents required.
Collapse
Affiliation(s)
- Isabelle Kohler
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Bd'Yvoy 20, CH-1211 Geneva 4, Switzerland
| | | | | | | |
Collapse
|
40
|
Affiliation(s)
- Matthew Geiger
- University of Minnesota, Department of Chemistry, 207
Pleasant Street South East, Minneapolis, Minnesota 55455, United States
| | - Amy L. Hogerton
- University of Minnesota, Department of Chemistry, 207
Pleasant Street South East, Minneapolis, Minnesota 55455, United States
| | - Michael T. Bowser
- University of Minnesota, Department of Chemistry, 207
Pleasant Street South East, Minneapolis, Minnesota 55455, United States
| |
Collapse
|
41
|
Castro-Puyana M, García-Cañas V, Simó C, Cifuentes A. Recent advances in the application of capillary electromigration methods for food analysis and Foodomics. Electrophoresis 2011; 33:147-67. [DOI: 10.1002/elps.201100385] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2011] [Revised: 08/10/2011] [Accepted: 08/10/2011] [Indexed: 12/17/2022]
|
42
|
Pérez-Fernández V, Domínguez-Vega E, Crego AL, García MÁ, Marina ML. Recent advances in the analysis of antibiotics by CE and CEC. Electrophoresis 2011; 33:127-46. [DOI: 10.1002/elps.201100409] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Revised: 09/17/2011] [Accepted: 09/19/2011] [Indexed: 11/09/2022]
|
43
|
Determination of mercury(II) in water samples using dispersive liquid-liquid microextraction and back extraction along with capillary zone electrophoresis. Mikrochim Acta 2011. [DOI: 10.1007/s00604-011-0679-z] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
44
|
Herrera-Herrera AV, Ravelo-Pérez LM, Hernández-Borges J, Afonso MM, Palenzuela JA, Rodríguez-Delgado MÁ. Oxidized multi-walled carbon nanotubes for the dispersive solid-phase extraction of quinolone antibiotics from water samples using capillary electrophoresis and large volume sample stacking with polarity switching. J Chromatogr A 2011; 1218:5352-61. [DOI: 10.1016/j.chroma.2011.06.031] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Revised: 06/01/2011] [Accepted: 06/07/2011] [Indexed: 10/18/2022]
|
45
|
Wen Y, Li J, Zhang W, Chen L. Dispersive liquid-liquid microextraction coupled with capillary electrophoresis for simultaneous determination of sulfonamides with the aid of experimental design. Electrophoresis 2011; 32:2131-8. [DOI: 10.1002/elps.201100142] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2011] [Revised: 03/02/2011] [Accepted: 04/15/2011] [Indexed: 11/12/2022]
|