1
|
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.
Collapse
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
| |
Collapse
|
2
|
Dvořák M, Maršala R, Kubáň P. In-vial dried urine spot collection and processing for quantitative analyses. Anal Chim Acta 2023; 1254:341071. [PMID: 37005033 DOI: 10.1016/j.aca.2023.341071] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/06/2023] [Accepted: 03/07/2023] [Indexed: 03/16/2023]
Abstract
Analysis of dried urine spots (DUSs) is becoming an emerging technique in clinical, toxicological, and forensic chemistry due to the fully non-invasive collection, facile transportation, and simple storage of DUS samples. Correct DUS collection and elution is of the utmost importance because inadequate DUS sampling/processing may have direct consequences on quantitative DUS analyses and these aspects were, for the first time, comprehensively investigated in this contribution. Various groups of endogenous and exogenous species were selected as model analytes and their concentrations were monitored in DUSs collected on standard cellulose-based sampling cards. Strong chromatographic effects were observed for most analytes having a crucial impact on their distribution within the DUSs during sampling. Concentrations of target analytes were up to 3.75-fold higher in the central DUS sub-punch in comparison to the liquid urine. Consequently, substantially reduced concentrations of these analytes were determined in peripheral DUS sub-punches demonstrating that sub-punching, often applied to dried material spots, is not acceptable for quantitative DUS analyses. Hence, a simple, rapid, and user-friendly procedure was suggested, which employed an in-vial collection of a known urine volume on a pre-punched sampling disc (using a low-cost micropipette designed for patient-centric clinical sampling) and in-vial processing of the whole DUS. Excellent accuracy (0.20%) and precision (0.89%) of liquid transfers were achieved by the micropipette, which was also applied to remote DUS collection by laic and expert users. The resulting DUS eluates were analysed by capillary electrophoresis (CE) for the determination of endogenous urine species. The CE results demonstrated no significant differences between the two user groups, elution efficiencies of 88-100% (in comparison to the liquid urine), and precision better than 5.5%.
Collapse
Affiliation(s)
- Miloš Dvořák
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Veveří 97, CZ-60200, Brno, Czech Republic
| | - Richard Maršala
- Faculty of Science, Department of Chemistry, Masaryk University, Kamenice 5, CZ-62500, Brno, Czech Republic
| | - Pavel Kubáň
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Veveří 97, CZ-60200, Brno, Czech Republic.
| |
Collapse
|
3
|
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]
|
4
|
Martínez-Aviñó A, Hakobyan L, Ballester-Caudet A, Moliner-Martínez Y, Molins-Legua C, Campíns-Falcó P. NQS-Doped PDMS Solid Sensor: From Water Matrix to Urine Enzymatic Application. BIOSENSORS-BASEL 2021; 11:bios11060186. [PMID: 34201174 PMCID: PMC8228043 DOI: 10.3390/bios11060186] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 11/16/2022]
Abstract
The development of in situ analytical devices has gained outstanding scientific interest. A solid sensing membrane composed of 1,2-naphthoquinone-4-sulfonate (NQS) derivatizing reagent embedded into a polymeric polydimethylsiloxane (PDMS) composite was proposed for in situ ammonium (NH4+) and urea (NH2CONH2) analysis in water and urine samples, respectively. Satisfactory strategies were also applied for urease-catalyzed hydrolysis of urea, either in solution or glass-supported urease immobilization. Using diffuse reflectance measurements combined with digital image processing of color intensity (RGB coordinates), qualitative and quantitative analyte detection was assessed after the colorimetric reaction took place inside the sensing membrane. A suitable linear relationship was found between the sensor response and analyte concentration, and the results were validated by a thymol-PDMS-based sensor based on the Berthelot reaction. The suggested sensing device offers advantages such as rapidity, versatility, portability, and employment of non-toxic reagents that facilitate in situ analysis in an energy-efficient manner.
Collapse
|
5
|
Xu N, Lin H, Uchiyama K, Lin J. On‐site sampling of inorganic contamination on the metal surface and analysis with capillary electrophoresis. J Sep Sci 2019; 42:1593-1599. [DOI: 10.1002/jssc.201800916] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 01/29/2019] [Accepted: 01/29/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Ning Xu
- Department of ChemistryBeijing Key Laboratory of Microanalytical Methods and InstrumentationMOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical BiologyTsinghua University Beijing P. R. China
- Department of Applied ChemistryGraduate School of Urban Environmental SciencesTokyo Metropolitan University Hachioji Tokyo Japan
| | - Haifeng Lin
- Department of Applied ChemistryGraduate School of Urban Environmental SciencesTokyo Metropolitan University Hachioji Tokyo Japan
| | - Katsumi Uchiyama
- Department of Applied ChemistryGraduate School of Urban Environmental SciencesTokyo Metropolitan University Hachioji Tokyo Japan
| | - Jin‐Ming Lin
- Department of ChemistryBeijing Key Laboratory of Microanalytical Methods and InstrumentationMOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical BiologyTsinghua University Beijing P. R. China
| |
Collapse
|
6
|
Zhang J, Wei X, Wang Y, Ren B, Zhao L, Wang Z, Pu Q. Rapid quantitation of multiple ions released from HeLa cells during emodin induced apoptosis by low-cost capillary electrophoresis with capacitively coupled contactless conductivity detection. RSC Adv 2018; 8:18266-18271. [PMID: 35541120 PMCID: PMC9080565 DOI: 10.1039/c8ra00492g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 05/08/2018] [Indexed: 11/21/2022] Open
Abstract
Change in cation concentration, including that of potassium and sodium, is characteristic of apoptosis, therefore it is significant to detect cation concentration changes.
Collapse
Affiliation(s)
- Jing Zhang
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- China
| | - Xuan Wei
- Department of Chemistry
- Tonghua Normal University
- Tonghua
- China
| | - Yuanhang Wang
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- China
| | - Bo Ren
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- China
| | - Litao Zhao
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- China
| | - Zhaoyan Wang
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- China
| | - Qiaosheng Pu
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- China
| |
Collapse
|
7
|
Grochocki W, Markuszewski MJ, Quirino JP. Simultaneous determination of creatinine and acetate by capillary electrophoresis with contactless conductivity detector as a feasible approach for urinary tract infection diagnosis. J Pharm Biomed Anal 2017; 137:178-181. [PMID: 28131056 DOI: 10.1016/j.jpba.2017.01.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 12/28/2016] [Accepted: 01/16/2017] [Indexed: 12/19/2022]
Abstract
Urinary tract infection (UTI) is one of the most common bacterial infection in human but its diagnosis is difficult. Metabolomic studies with nuclear magnetic resonance of urine have shown that acetic acid/creatinine ratio may be used for early UTI diagnosis. Here, a method for simultaneous determination of acetate and creatinine by capillary zone electrophoresis with contactless conductivity detector was developed for the first time. The separation was with 40mM MES and 20mM l-histidine as a background solution. The total time of a single run, including capillary conditioning, was less than 12min. The method was successfully demonstrated for analysis of actual and fortified human urine samples after methanol dilution. Analytical figures of merit such as linearity, LOQ, and repeatability (intraday and interday) were studied.
Collapse
Affiliation(s)
- Wojciech Grochocki
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdansk, Gdansk, Poland; Australian Centre for Research on Separation Science (ACROSS), School of Physical Sciences-Chemistry, University of Tasmania, Hobart, 7001, Australia
| | - Michał J Markuszewski
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdansk, Gdansk, Poland.
| | - Joselito P Quirino
- Australian Centre for Research on Separation Science (ACROSS), School of Physical Sciences-Chemistry, University of Tasmania, Hobart, 7001, Australia.
| |
Collapse
|
8
|
Chaisuwan P, Moonta T, Sangcakul A, Nacapricha D, Wilairat P, Uraisin K. Simple in-house flow-injection capillary electrophoresis with capacitively coupled contactless conductivity method for the determination of colistin. J Sep Sci 2015; 38:1035-41. [DOI: 10.1002/jssc.201401101] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Revised: 12/21/2014] [Accepted: 12/23/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Patcharin Chaisuwan
- Flow Innovation-Research for Science and Technology Laboratories (FIRST Labs.); Thailand
- Department of Chemistry; Faculty of Science; Srinakharinwirot University; Bangkok Thailand
| | - Thararat Moonta
- Flow Innovation-Research for Science and Technology Laboratories (FIRST Labs.); Thailand
- Department of Chemistry and Center of Excellence for Innovation in Chemistry; Faculty of Science; Mahidol University; Bangkok Thailand
| | - Areeporn Sangcakul
- Research Center; Ramathibodi Hospital; Faculty of Medicine; Mahidol University; Bangkok Thailand
| | - Duangjai Nacapricha
- Flow Innovation-Research for Science and Technology Laboratories (FIRST Labs.); Thailand
- Department of Chemistry and Center of Excellence for Innovation in Chemistry; Faculty of Science; Mahidol University; Bangkok Thailand
| | - Prapin Wilairat
- Flow Innovation-Research for Science and Technology Laboratories (FIRST Labs.); Thailand
- National Doping Control Centre; Mahidol University; Bangkok Thailand
| | - Kanchana Uraisin
- Flow Innovation-Research for Science and Technology Laboratories (FIRST Labs.); Thailand
- Department of Chemistry and Center of Excellence for Innovation in Chemistry; Faculty of Science; Mahidol University; Bangkok Thailand
| |
Collapse
|
9
|
Miura C, Funaya N, Matsunaga H, Haginaka J. Monodisperse, molecularly imprinted polymers for creatinine by modified precipitation polymerization and their applications to creatinine assays for human serum and urine. J Pharm Biomed Anal 2013; 85:288-94. [DOI: 10.1016/j.jpba.2013.07.038] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 07/27/2013] [Accepted: 07/29/2013] [Indexed: 11/26/2022]
|
10
|
Ávila M, Floris A, Staal S, Ríos Á, Eijkel J, van den Berg A. Point of care creatinine measurement for diagnosis of renal disease using a disposable microchip. Electrophoresis 2013; 34:2956-61. [PMID: 24037968 DOI: 10.1002/elps.201300255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 07/16/2013] [Accepted: 08/04/2013] [Indexed: 11/07/2022]
Abstract
A point-of-care device for the determination of elevated creatinine levels in blood is reported. This device potentially offers a new and simple clinical regime for the determination of creatinine that will give huge time savings and removal of several steps of determination. The test employs a disposable prefilled microchip and the handheld Medimate Multireader®. By optimizing the analytical conditions it was found that the LOD of the proposed method was 87 μM creatinine, close to the normal human serum levels that are in the range of 60 to 100 μM. A statistical analysis of the residual shows a normal distribution, indicating the absence of systematic errors in the proposed method. The test can be used to distinguish patients with renal insufficiency (creatinine levels >100 μM) from healthy persons. Long-term monitoring could furthermore distinguish between acute renal failure and chronic kidney disease by the rate of creatinine concentration rise.
Collapse
Affiliation(s)
- Mónica Ávila
- Department of Analytical Chemistry and Food Technology, University of Castilla-La Mancha, Ciudad Real, Spain
| | | | | | | | | | | |
Collapse
|
11
|
Tůma P, Stulík K. Monitoring of arrays of amino acids in clinical samples using capillary electrophoresis with contactless conductivity detection. Methods Mol Biol 2013; 919:13-23. [PMID: 22976086 DOI: 10.1007/978-1-62703-029-8_2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Capillary electrophoresis (CE) with contactless conductivity detection (C(4)D) is readily applicable to determinations of amino acids in clinical samples. Most of these analyses employ long separation pathways. This chapter describes CE/C(4)D determinations of 28 biogenic amino acids in a short capillary with an effective length of 18 cm. All the test amino acids can be mutually separated in electrolytes of 0.5-10 mol/L acetic acid. The time of analysis does not exceed 6 min; the limits of detection vary from 0.1 to 1.7 μmol/L for all the analytes. The pretreatment of the biological material is very simple, consisting of the removal of proteins by an addition of acetonitrile and subsequent filtration. The procedure has been successfully applied to determinations of the whole amino acid spectra in blood plasma, urine, saliva, cerebrospinal, and amniotic fluid samples.
Collapse
Affiliation(s)
- Petr Tůma
- Institute of Biochemistry, Cell and Molecular Biology, Charles University, Prague, Czech Republic.
| | | |
Collapse
|
12
|
Determination of free and total valproic acid in human plasma by capillary electrophoresis with contactless conductivity detection. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 907:74-8. [DOI: 10.1016/j.jchromb.2012.08.037] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Revised: 08/27/2012] [Accepted: 08/29/2012] [Indexed: 11/21/2022]
|
13
|
Rapid Determination of Creatinine in Human Urine by Microchip Electrophoresis with LED Induced Fluorescence Detection. Chromatographia 2012. [DOI: 10.1007/s10337-012-2324-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
14
|
Abstract
AbstractCapillary electrophoresis (CE) is an attractive technique in separation science because of its high separation performance, short analysis time and low cost. Electrochemical detection (EC) is a powerful tool for CE because of its high sensitivity. In this review, developments of CE-EC from 2008 to August, 2011 are reviewed. We choose papers of innovative and novel results to demonstrate the newest and most important progress in CE-EC.
Collapse
|
15
|
See HH, Schmidt-Marzinkowski J, Pormsila W, Morand R, Krähenbühl S, Hauser PC. Determination of creatine and phosphocreatine in muscle biopsy samples by capillary electrophoresis with contactless conductivity detection. Anal Chim Acta 2012; 727:78-82. [DOI: 10.1016/j.aca.2012.03.055] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 03/29/2012] [Accepted: 03/30/2012] [Indexed: 01/13/2023]
|
16
|
Simultaneous determination of serotonin and creatinine in urine by combining two ultrasound-assisted emulsification microextractions with on-column stacking in capillary electrophoresis. J Sep Sci 2011; 35:436-44. [DOI: 10.1002/jssc.201100778] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2011] [Revised: 10/27/2011] [Accepted: 11/01/2011] [Indexed: 11/07/2022]
|
17
|
Tůma P, Samcová E, Štulík K. Contactless Conductivity Detection in Capillary Electrophoresis Employing Capillaries with Very Low Inner Diameters. ELECTROANAL 2011. [DOI: 10.1002/elan.201100264] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
18
|
Tůma P, Málková K, Samcová E, Štulík K. Rapid monitoring of mono- and disaccharides in drinks, foodstuffs and foodstuff additives by capillary electrophoresis with contactless conductivity detection. Anal Chim Acta 2011; 698:1-5. [DOI: 10.1016/j.aca.2011.04.055] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 04/15/2011] [Accepted: 04/22/2011] [Indexed: 12/16/2022]
|
19
|
Pormsila W, Morand R, Krähenbühl S, Hauser PC. Quantification of plasma lactate concentrations using capillary electrophoresis with contactless conductivity detection. Electrophoresis 2011; 32:884-9. [DOI: 10.1002/elps.201000420] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Revised: 09/22/2010] [Accepted: 09/22/2010] [Indexed: 11/11/2022]
|
20
|
Kubáň P, Hauser PC. Capacitively coupled contactless conductivity detection for microseparation techniques - recent developments. Electrophoresis 2010; 32:30-42. [DOI: 10.1002/elps.201000354] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Revised: 08/12/2010] [Accepted: 08/13/2010] [Indexed: 11/09/2022]
|
21
|
Elbashir AA, Aboul-Enein HY. Applications of capillary electrophoresis with capacitively coupled contactless conductivity detection (CE-C4D) in pharmaceutical and biological analysis. Biomed Chromatogr 2010; 24:1038-44. [DOI: 10.1002/bmc.1417] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
22
|
Tůma P, Málková K, Samcová E, Štulík K. Rapid monitoring of arrays of amino acids in clinical samples using capillary electrophoresis with contactless conductivity detection. J Sep Sci 2010; 33:2394-401. [DOI: 10.1002/jssc.201000137] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
23
|
Tagliaro F, Pascali J, Fanigliulo A, Bortolotti F. Recent advances in the application of CE to forensic sciences: A update over years 2007â2009. Electrophoresis 2010; 31:251-9. [DOI: 10.1002/elps.200900482] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
24
|
Chang Guo C, Lei Guang L, Yu Jun S, Yu Ping L. AC impedance characteristics of capacitively coupled contactless conductivity detector cell in capillary electrophoresis. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2009.06.046] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
25
|
Rapid and direct determination of creatinine in urine using capillary zone electrophoresis. Clin Chim Acta 2009; 409:52-5. [DOI: 10.1016/j.cca.2009.08.015] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2009] [Revised: 08/14/2009] [Accepted: 08/23/2009] [Indexed: 10/20/2022]
|
26
|
Tůma P, Soukupová M, Samcová E, Štulík K. A determination of submicromolar concentrations of glycine in periaqueductal gray matter microdialyzates using capillary zone electrophoresis with contactless conductivity detection. Electrophoresis 2009; 30:3436-41. [DOI: 10.1002/elps.200900187] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
27
|
Johns C, Breadmore MC, Macka M, Ryvolová M, Haddad PR. Recent significant developments in detection and method development for the determination of inorganic ions by CE. Electrophoresis 2009; 30 Suppl 1:S53-67. [DOI: 10.1002/elps.200900103] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
28
|
Pormsila W, Krähenbühl S, Hauser PC. Capillary electrophoresis with contactless conductivity detection for uric acid determination in biological fluids. Anal Chim Acta 2009; 636:224-8. [DOI: 10.1016/j.aca.2009.02.012] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2008] [Revised: 02/05/2009] [Accepted: 02/05/2009] [Indexed: 11/26/2022]
|