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Tang Z, Feng X, Tian H, Wang J, Qin W. Integration of glutathione disulfide-mediated extraction and capillary electrophoresis for determination of Cd(II) and Pb(II) in edible oils. Food Chem 2024; 457:140146. [PMID: 38901338 DOI: 10.1016/j.foodchem.2024.140146] [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: 03/01/2024] [Revised: 06/06/2024] [Accepted: 06/15/2024] [Indexed: 06/22/2024]
Abstract
A novel method is introduced for extracting and enriching Cd(II) and Pb(II) from edible oils using glutathione disulfide (GSSG) as both an extractant and a phase-separation agent. The ions in the oils were initially extracted into an aqueous solution containing GSSG. After mixing the solution with acetonitrile at the appropriate volume ratio, a new phase formed, resulting in enrichment of the analytes. The experimental conditions were optimized using response surface methodology with a central composite design. Under optimal conditions, the method offered a combined enrichment factor of >660, with combined extraction efficiencies of 84.31% and 83.35% for Cd(II) and Pb(II), respectively. Finally, the method was conjugated to capillary electrophoresis to determine Cd(II) and Pb(II) in edible oil samples, with detection limits of 0.45 and 1.24 ppb, respectively. In comparison to traditional approaches, the GSSG-based method demonstrates rapidity, efficiency, and recyclability in extracting heavy metal ions from complex matrices.
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Affiliation(s)
- Zhanqiu Tang
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Xinyi Feng
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Hongyuan Tian
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Junhua Wang
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Weidong Qin
- College of Chemistry, Beijing Normal University, Beijing 100875, China.
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2
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Elbashir AA, Osman A, Elawad M, Ziyada AK, Aboul-Enein HY. Application of capillary electrophoresis with capacitively contactless conductivity detection for biomedical analysis. Electrophoresis 2024; 45:400-410. [PMID: 38100198 DOI: 10.1002/elps.202300216] [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: 09/27/2023] [Revised: 11/26/2023] [Accepted: 12/06/2023] [Indexed: 03/20/2024]
Abstract
The coupling of capillary electrophoresis (CE) with capacitively coupled contactless conductivity detection (C4 D) has become convenient analytical method for determination of small molecules that do not possess chromogenic or fluorogenic group. The implementations of CE with C4 D in the determination of inorganic and organic ions and amino acids in biomedical field are demonstrated. Attention on background electrolyte composition, sample treatment procedures, and the utilize of multi-detection systems are described. A number of tables summarizing highly developed CE-C4 D methods and the figures of merit attained are involved. Lastly, concluding remarks and perspectives are argued.
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Affiliation(s)
- Abdalla A Elbashir
- Department, of Chemistry, College of Science, King Faisal University, Al-Hofuf, Al-Ahsa, Saudi Arabia
- Department of Chemistry, Faculty of Science, University of Khartoum, Khartoum, Sudan
| | - Abdelbagi Osman
- Department of Chemical Engineering, College of Engineering, Najran University, Najran, Saudi Arabia
| | - Mohammed Elawad
- Department of Chemistry, Faculty of Science, Omdurman Islamic University, Omdurman, Sudan
| | - Abobakr K Ziyada
- Department of General Studies, Jubail Industrial College, Jubail Industrial City, Saudi Arabia
| | - Hassan Y Aboul-Enein
- Pharmaceutical and Medicinal Chemistry Department, Division of Pharmaceutical and Drug Industries Research Division, National Research Centre, Cairo, Egypt
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Tůma P. Progress in on-line, at-line, and in-line coupling of sample treatment with capillary and microchip electrophoresis over the past 10 years: A review. Anal Chim Acta 2023; 1261:341249. [PMID: 37147053 DOI: 10.1016/j.aca.2023.341249] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/20/2023] [Accepted: 04/21/2023] [Indexed: 05/07/2023]
Abstract
The review presents an evaluation of the development of on-line, at-line and in-line sample treatment coupled with capillary and microchip electrophoresis over the last 10 years. In the first part, it describes different types of flow-gating interfaces (FGI) such as cross-FGI, coaxial-FGI, sheet-flow-FGI, and air-assisted-FGI and their fabrication using molding into polydimethylsiloxane and commercially available fittings. The second part deals with the coupling of capillary and microchip electrophoresis with microdialysis, solid-phase, liquid-phase, and membrane based extraction techniques. It mainly focuses on modern techniques such as extraction across supported liquid membrane, electroextraction, single drop microextraction, head space microextraction, and microdialysis with high spatial and temporal resolution. Finally, the design of sequential electrophoretic analysers and fabrication of SPE microcartridges with monolithic and molecularly imprinted polymeric sorbents are discussed. Applications include the monitoring of metabolites, neurotransmitters, peptides and proteins in body fluids and tissues to study processes in living organisms, as well as the monitoring of nutrients, minerals and waste compounds in food, natural and wastewater.
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Affiliation(s)
- Petr Tůma
- Department of Hygiene, Third Faculty of Medicine, Charles University, Ruská 87, 100 00, Prague 10, Czech Republic.
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Zhang C, Zhang W, Wu Y, Peng B, Tian C, Luan F, Sun W, Zhuang X, Zhao L. Sensitive and Facile HCOOH Fluorescence Sensor Based on Highly Active Ir Complexes’ Catalytic Transfer Hydrogen Reaction. Molecules 2022; 27:molecules27217431. [PMID: 36364257 PMCID: PMC9656036 DOI: 10.3390/molecules27217431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/23/2022] [Accepted: 10/24/2022] [Indexed: 11/06/2022] Open
Abstract
With several major polarity and weak optical properties, the sensitive detection of HCOOH remains a major challenge. Given the special role of HCOOH in assisting in the catalytic hydrogenation process of Ir complexes, HCOOH (as a hydrogen source) could rapidly activate Ir complexes as catalysts and further reduce the substrates. This work developed a facile and sensitive HCOOH fluorescence sensor utilizing an optimal catalytic fluorescence generation system, which consists of the phenyl-pyrazole-type Ir-complex PP-Ir-Cl and the coumarin-type fluorescence probe P-coumarin. The sensor demonstrates excellent sensitivity and specificity for HCOOH and formates; the limits of detection for HCOOH, HCOONa, and HCOOEt3N were tested to be 50.6 ppb, 68.0 ppb, and 146.0 ppb, respectively. Compared to previous methods, the proposed sensor exhibits good detection accuracy and excellent sensitivity. Therefore, the proposed HCOOH sensor could be used as a new detection method for HCOOH and could provide a new design path for other sensors.
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Affiliation(s)
- Caimei Zhang
- School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
| | - Wenjuan Zhang
- School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
| | - Yiran Wu
- School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
| | - Bo Peng
- School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
| | - Chunyuan Tian
- School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
| | - Feng Luan
- School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
| | - Wen Sun
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- Correspondence: (W.S.); (X.Z.); (L.Z.)
| | - Xuming Zhuang
- School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
- Correspondence: (W.S.); (X.Z.); (L.Z.)
| | - Lijun Zhao
- School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
- Correspondence: (W.S.); (X.Z.); (L.Z.)
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Tůma P. Monitoring of biologically active substances in clinical samples by capillary and microchip electrophoresis with contactless conductivity detection: A review. Anal Chim Acta 2022; 1225:340161. [DOI: 10.1016/j.aca.2022.340161] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 07/08/2022] [Accepted: 07/08/2022] [Indexed: 12/11/2022]
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Sub-Minute Analysis of Lactate from a Single Blood Drop Using Capillary Electrophoresis with Contactless Conductivity Detection in Monitoring of Athlete Performance. Molecules 2021; 26:molecules26195817. [PMID: 34641364 PMCID: PMC8510495 DOI: 10.3390/molecules26195817] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 11/17/2022] Open
Abstract
A simple and fast method for the analysis of lactate from a single drop of blood was developed. The finger-prick whole blood sample (10 µL) was diluted (1:20) with a 7% (w/v) solution of [tris(hydroxymethyl)methylamino] propanesulfonic acid and applied to a blood plasma separation device. The device accommodates a membrane sandwich composed of an asymmetric polysulfone membrane and a supporting textile membrane that allows the collection of blood plasma into a narrow glass capillary in less than 20 s. Separated and simultaneously diluted blood plasma was directly injected into a capillary electrophoresis instrument with a contactless conductivity detector (CE-C4D) and analyzed in less than one minute. A separation electrolyte consisted of 10 mmol/L l-histidine, 15 mmol/L dl-glutamic acid, and 30 µmol/L cetyltrimethylammonium bromide. The whole procedure starting from the finger-prick sampling until the CE-C4D analysis was finished, took less than 5 min and was suitable for monitoring lactate increase in blood plasma during incremental cycling exercise. The observed lactate increase during the experiments measured by the developed CE-C4D method correlated well with the results from a hand-held lactate analyzer (R = 0.9882). The advantage of the developed CE method is the speed, significant savings per analysis, and the possibility to analyze other compounds from blood plasma.
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Elbashir AA, Elgorashe REE, Alnajjar AO, Aboul-Enein HY. Application of Capillary Electrophoresis with Capacitively Coupled Contactless Conductivity Detection (CE-C 4D): 2017-2020. Crit Rev Anal Chem 2020; 52:535-543. [PMID: 32835492 DOI: 10.1080/10408347.2020.1809340] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Capacitively coupled contactless conductivity detection (C4D) has emerged as influential to detect analytes that do not have chromogenic or fluorogenic functional group. Since our last review several new capillary electrophoresis (CE) methods coupled with (CE-C4D) have been communicated. The aim of this review is to give an update of the almost all the new applications of CE-C4D in the field of pharmaceutical, food and biomedical analysis covering the period from 2017 to April 2020. The utilization of CE with C4D in the areas of pharmaceutical, food and biomedical analysis is presented. Finally, concluding remarks and outlooks are discussed.
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Affiliation(s)
- Abdalla Ahmed Elbashir
- Department of Chemistry, College of Science, King Faisal University, Al Ahsa, Saudi Arabia
| | | | - Ahmed O Alnajjar
- Department of Chemistry, College of Science, King Faisal University, Al Ahsa, Saudi Arabia
| | - Hassan Y Aboul-Enein
- Pharmaceutical and Medicinal Chemistry Department, Pharmaceutical and Drug Industries Research Division, National Research Centre, Cairo, Egypt
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Özçelik S, Öztekin N, Kıykım E, Cansever MŞ, Aktuğlu‐Zeybek AÇ. Capillary electrophoresis with capacitively coupled contactless conductivity detection for the determination of urinary ethylmalonic acid for the diagnosis of ethylmalonic aciduria. J Sep Sci 2020; 43:1365-1371. [DOI: 10.1002/jssc.201901044] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 12/30/2019] [Accepted: 01/16/2020] [Indexed: 01/17/2023]
Affiliation(s)
- Sirun Özçelik
- Department of ChemistryTechnical University of Istanbul Istanbul Turkey
| | - Nevin Öztekin
- Department of ChemistryTechnical University of Istanbul Istanbul Turkey
| | - Ertuğrul Kıykım
- Cerrahpaşa Medical FacultyDivision of Nutrition and MetabolismDepartment of PediatricsIstanbul University‐Cerrahpaşa Istanbul Turkey
| | | | - Ayşe Çiğdem Aktuğlu‐Zeybek
- Cerrahpaşa Medical FacultyDivision of Nutrition and MetabolismDepartment of PediatricsIstanbul University‐Cerrahpaşa Istanbul Turkey
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Fast blood plasma separation device for point-of-care applications. Talanta 2018; 183:55-60. [DOI: 10.1016/j.talanta.2018.02.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/30/2018] [Accepted: 02/01/2018] [Indexed: 11/22/2022]
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Portable capillary electrophoresis instrument with contactless conductivity detection for on-site analysis of small volumes of biological fluids. J Chromatogr A 2015; 1427:177-85. [PMID: 26709071 DOI: 10.1016/j.chroma.2015.11.088] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 11/06/2015] [Accepted: 11/29/2015] [Indexed: 11/20/2022]
Abstract
A novel, easy to use and portable capillary electrophoretic instrument for injection of small volumes of biological fluids equipped with contactless conductivity detection was constructed. The instrument is lightweight (<5 kg), all necessary parts including a tablet computer are accommodated in a plastic briefcase with dimensions 20 cm × 33 cm × 17 cm (w × l × h), allows hydrodynamic injection of small sample volumes and can continuously operate for at least 10 hours. The semi-automated hydrodynamic sample injection is accomplished via a specially designed PMMA interface that is able to repeatedly inject sample aliquots from a sample volume as low as 10 μL, with repeatability of peak areas below 5%. The developed interface and the instrument were optimized for the injection of biological fluids. Practical utility was demonstrated on the determination of formate in blood serum samples from acute methanol intoxication patients and on the analysis of ionic profile (nitrosative stress markers, including nitrite and nitrate) in the exhaled breath condensate from one single exhalation.
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12
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Wang Y, Xu SL, Xu WJ, Yang HY, Hu P, Li YX. Sodium formate induces autophagy and apoptosis via the JNK signaling pathway of photoreceptor cells. Mol Med Rep 2015; 13:1111-8. [PMID: 26676762 PMCID: PMC4732824 DOI: 10.3892/mmr.2015.4675] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 10/29/2015] [Indexed: 12/01/2022] Open
Abstract
Incidents associated with methanol intoxication resulting from the consumption of fake wine occur not infrequently worldwide. Certain individuals are made blind due to methanol poisoning. The present study aimed to investigate the effects of sodium formate exposure on photoreceptor cells (661W cells). The 661W cells were exposed to sodium formate for 6–24 h and cell viability was determined using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. Subsequently, the 661W cells were exposed to 15 or 30 mM sodium formate for 24 h. The level of apoptosis was determined using Hoechst 33342/propidium iodide staining, visualizing the cells under a fluorescence microscope, and annexin V-fluorescein isothiocyanate staining, using flow cytometric analysis. Intracellular reactive oxygen species (ROS) were measured using 2′,7′-dichlorofluorescein diacetate (DCFH-DA) staining, followed by flow cytometric analysis. Autophagy of the 661W cells was measured by monodansylcadaverine staining. The activation of phosphorylated c-Jun N-terminal kinase (p-JNK), B-cell lymphoma (Bcl-2), Bcl-2-associated X protein, cleaved caspase-3, cleaved caspase-9 and microtubule-associated protein 1A/1B-light chain 3 (LC3) was assessed by western blotting. The effects of Z-VAD-fmk (a pan-caspase inhibitor) and SP600125 (a JNK inhibitor) on the viability of the sodium formate-induced 661W cells were determined using an MTT assay. Sodium formate treatment induced a decrease in the viability of the 661W cells in a time- and a dose-dependent manner. In addition, sodium formate at concentrations of 15 or 30 mM markedly increased the level of apoptosis and the ROS levels, as measured by DCFH-DA staining of the 661W cells. Additionally, 661W cells exposed to sodium formate for 24 h exhibited increased levels of p-JNK, Bax, cleaved caspase-3, cleaved caspase-9 and LC3II (the phosphatidylethanolamine-modified form of LC3), although the level of Bcl-2 was decreased. Furthermore, cell cytotoxicity and autophagy were induced upon treatment with sodium formate. Z-VAD-fmk and SP600125 were able to effectively circumvent the effects of sodium formate on cell viability. These results suggested that the cytotoxicity induced by sodium formate induces the activation of the JNK signaling pathway, leading to caspase-dependent apoptosis. Increased levels of autophagy were also observed during the process of 661W cell damage induced by sodium formate.
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Affiliation(s)
- Ying Wang
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Shao-Lin Xu
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Wen-Jing Xu
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Hai-Yan Yang
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Ping Hu
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Yu-Xin Li
- Department of Biology, National Engineering Laboratory for Druggable Gene and Protein Screening, Northeast Normal University, Changchun, Jilin 130024, P.R. China
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Pantůčková P, Kubáň P, Boček P. In-line coupling of microextractions across polymer inclusion membranes to capillary zone electrophoresis for rapid determination of formate in blood samples. Anal Chim Acta 2015; 887:111-117. [DOI: 10.1016/j.aca.2015.07.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 07/17/2015] [Accepted: 07/20/2015] [Indexed: 12/24/2022]
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Bursová M, Hložek T, Čabala R. Simultaneous Determination of Methanol, Ethanol and Formic Acid in Serum and Urine by Headspace GC-FID. J Anal Toxicol 2015; 39:741-5. [DOI: 10.1093/jat/bkv075] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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Tůma P, Gojda J. Rapid determination of branched chain amino acids in human blood plasma by pressure-assisted capillary electrophoresis with contactless conductivity detection. Electrophoresis 2015; 36:1969-75. [DOI: 10.1002/elps.201400585] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 12/24/2014] [Accepted: 12/29/2014] [Indexed: 12/11/2022]
Affiliation(s)
- Petr Tůma
- Institute of Biochemistry; Cell and Molecular Biology; Third Faculty of Medicine; Charles University in Prague; Prague Czech Republic
| | - Jan Gojda
- 2nd Internal Department of Third Faculty of Medicine and Faculty Hospital Královské Vinohrady; Centre for Research on Diabetes, Metabolism and Nutrition; Charles University in Prague; Prague Czech Republic
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Hodáková J, Preisler J, Foret F, Kubáň P. Sensitive determination of glutathione in biological samples by capillary electrophoresis with green (515nm) laser-induced fluorescence detection. J Chromatogr A 2015; 1391:102-8. [DOI: 10.1016/j.chroma.2015.02.062] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 02/02/2015] [Accepted: 02/20/2015] [Indexed: 10/23/2022]
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Kubáň P, Hauser PC. Contactless conductivity detection for analytical techniques-Developments from 2012 to 2014. Electrophoresis 2014; 36:195-211. [DOI: 10.1002/elps.201400336] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 08/05/2014] [Accepted: 08/05/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Pavel Kubáň
- Institute of Analytical Chemistry of the Academy of Sciences of the Czech Republic; Brno Czech Republic
| | - Peter C. Hauser
- Department of Chemistry; University of Basel; Basel Switzerland
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Separation of oxalate, formate and glycolate in human body fluid samples by capillary electrophoresis with contactless conductometric detection. J Chromatogr A 2014; 1325:241-6. [DOI: 10.1016/j.chroma.2013.12.039] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 12/11/2013] [Accepted: 12/13/2013] [Indexed: 01/14/2023]
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Supported liquid membrane extraction coupled in-line to commercial capillary electrophoresis for rapid determination of formate in undiluted blood samples. J Chromatogr A 2013; 1299:33-9. [DOI: 10.1016/j.chroma.2013.05.058] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 05/23/2013] [Accepted: 05/24/2013] [Indexed: 11/19/2022]
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