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Li L, Song YP, Ren DD, Li TX, Gao MH, Zhou L, Zeng ZC, Pu QA. A compact and high-performance setup of capillary electrophoresis with capacitively coupled contactless conductivity detection (CE-C 4D). Analyst 2024; 149:3034-3040. [PMID: 38624147 DOI: 10.1039/d4an00354c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Capillary electrophoresis with capacitively coupled contactless conductivity detection (CE-C4D) has the advantages of high throughput (simultaneous detection of multiple ions), high separation efficiency (higher than 105 theoretical plates) and rapid analysis capability (less than 5 min for common inorganic ions). A compact CE-C4D system is ideal for water quality control and on-site analysis. It is suitable not only for common cations (e.g. Na+, K+, Li+, NH4+, Ca2+, etc.) and anions (e.g. Cl-, SO42-, BrO3-, etc.) but also for some ions (e.g. lanthanide ions, Pb2+, Cd2+, etc.) that require complex derivatization procedures to be detected by ion chromatography (IC). However, an obvious limitation of the CE-C4D method is that its sensitivity (e.g. 0.3-1 μM for common inorganic ions) is often insufficient for trace analysis (e.g. 1 ppb or 20 nM level for common inorganic ions) without preconcentration. For this technology to become a powerful and routine analytical technique, the system should be made compact while maintaining trace analysis sensitivity. In this study, we developed an all-in-one version of the CE-C4D instrument with custom-made modular components to make it a convenient, compact and high-performance system. The system was designed using direct digital synthesis (DDS) technology to generate programmable sinusoidal waveforms with any frequency for excitation, a kilovolt high-voltage power supply for capillary electrophoresis separation, and an "effective" differential C4D cell with a low-noise circuitry for high-sensitivity detection. We characterized the system with different concentrations of Cs+, and even a low concentration of 20 nM was detectable without preconcentration. Moreover, the optimized CE-C4D setup was applied to analyse mixed ions at a trace concentration of 200 nM with excellent signal-to-noise ratios. In typical applications, the limits of detection based on the 3σ criterion (without baseline filtering) were 9, 10, 24, 5, and 12 nM for K+, Cs+, Li+, Ca2+, and Mg2+, respectively, and about 7, 6, 6 and 6 nM for Br-, ClO4-, BrO3- and SO42-, respectively. Finally, the setup was also applied for the analysis of all 14 lanthanide ions and rare-earth minerals, and it showed an improvement in sensitivity by more than 25 times.
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Affiliation(s)
- Lin Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, China.
| | - Yun-Peng Song
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, China.
| | - Dou-Dou Ren
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, China.
| | - Tang-Xiu Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, China.
| | - Ming-Hui Gao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, China.
| | - Lei Zhou
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, China.
| | - Zhi-Cong Zeng
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, China.
| | - Qi-Aosheng Pu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, China.
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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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Do YN, Kieu TLP, Dang THM, Nguyen QH, Dang TH, Tran CS, Vu AP, Do TT, Nguyen TN, Dinh SL, Nguyen TMT, Pham TNM, Hoang AQ, Pham B, Nguyen TAH. Green Analytical Method for Simultaneous Determination of Glucosamine and Calcium in Dietary Supplements by Capillary Electrophoresis with Capacitively Coupled Contactless Conductivity Detection. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2023; 2023:2765508. [PMID: 36760655 PMCID: PMC9904918 DOI: 10.1155/2023/2765508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/25/2022] [Accepted: 11/24/2022] [Indexed: 06/18/2023]
Abstract
The need for analytical methods that are fast, affordable, and ecologically friendly is expanding. Because of its low solvent consumption, minimal waste production, and speedy analysis, capillary electrophoresis is considered a "green" choice among analytical separation methods. With these "green" features, we have utilized the capillary electrophoresis method with capacitively coupled contactless conductivity detection (CE-C4D) to simultaneously determine glucosamine and Ca2+ in dietary supplements. The CE analysis was performed in fused silica capillaries (50 μm inner diameter, 40 cm total length, 30 cm effective length), and the analytical time was around 5 min. After optimization, the CE conditions for selective determination of glucosamine and Ca2+ were obtained, including a 10 mM tris (hydroxymethyl) aminomethane/acetic acid (Tris/Ace) buffer of pH 5.0 as the background electrolyte; separation voltage of 20 kV; and hydrodynamic injection (siphoning) at 25 cm height for 30 s. The method illustrated good linearity over the concentration range of 5.00 to 200 mg/L of for glucosamine (R 2 = 0.9994) and 1.00 to 100 mg/L for Ca2+ (R 2 = 0.9994). Under the optimum conditions, the detection limit of glucosamine was 1.00 mg/L, while that of Ca2+ was 0.05 mg/L. The validated method successfully analyzed glucosamine and Ca2+ in seven dietary supplement samples. The measured concentrations were generally in line with the values of label claims and with cross-checking data from reference methods (HPLC and ICP-OES).
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Affiliation(s)
- Yen Nhi Do
- Faculty of Chemistry, University of Science, Vietnam National University, 19 Le Thanh Tong, Hanoi 10000, Vietnam
| | - Thi Lan Phuong Kieu
- Faculty of Chemistry, University of Science, Vietnam National University, 19 Le Thanh Tong, Hanoi 10000, Vietnam
- National Institute for Food Control (NIFC), 65 Pham Than Duat, Hanoi 10000, Vietnam
| | - Thi Huyen My Dang
- Faculty of Chemistry, University of Science, Vietnam National University, 19 Le Thanh Tong, Hanoi 10000, Vietnam
| | - Quang Huy Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University, 19 Le Thanh Tong, Hanoi 10000, Vietnam
- Faculty of Pharmacy, University of Medicine and Pharmacy, Thai Nguyen University, 284 Luong Ngoc Quyen, Thai Nguyen 24000, Vietnam
| | - Thu Hien Dang
- National Institute for Food Control (NIFC), 65 Pham Than Duat, Hanoi 10000, Vietnam
| | - Cao Son Tran
- National Institute for Food Control (NIFC), 65 Pham Than Duat, Hanoi 10000, Vietnam
| | - Anh Phuong Vu
- Poison Control Center, Bach Mai Hospital, 78 Giai Phong, Hanoi 10000, Vietnam
| | - Thi Trang Do
- Poison Control Center, Bach Mai Hospital, 78 Giai Phong, Hanoi 10000, Vietnam
| | - Thi Ngan Nguyen
- Poison Control Center, Bach Mai Hospital, 78 Giai Phong, Hanoi 10000, Vietnam
| | - Son Luong Dinh
- Poison Control Center, Bach Mai Hospital, 78 Giai Phong, Hanoi 10000, Vietnam
| | - Thi Minh Thu Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University, 19 Le Thanh Tong, Hanoi 10000, Vietnam
| | - Thi Ngoc Mai Pham
- Faculty of Chemistry, University of Science, Vietnam National University, 19 Le Thanh Tong, Hanoi 10000, Vietnam
| | - Anh Quoc Hoang
- Faculty of Chemistry, University of Science, Vietnam National University, 19 Le Thanh Tong, Hanoi 10000, Vietnam
| | - Bach Pham
- Faculty of Chemistry, University of Science, Vietnam National University, 19 Le Thanh Tong, Hanoi 10000, Vietnam
| | - Thi Anh Huong Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University, 19 Le Thanh Tong, Hanoi 10000, Vietnam
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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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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.
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Capillary electrophoresis with dual detection UV/C 4D for monitoring myrosinase-mediated hydrolysis of thiol glucosinolate designed for gold nanoparticle conjugation. Anal Chim Acta 2019; 1085:117-125. [PMID: 31522725 DOI: 10.1016/j.aca.2019.07.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 07/18/2019] [Accepted: 07/20/2019] [Indexed: 12/23/2022]
Abstract
Capillary electrophoresis (CE) with dual UV and conductivity detection was used for the first time to monitor the functionalization of gold nanoparticles (AuNPs), a process catalyzed by an enzyme, myrosinase (Myr). A thiol glucosinolate (GL-SH) designed by our group was used as substrate. Hydrolysis of free and immobilized GL-SH was characterized using off-line and on-line CE-based enzymatic assays. The developed approaches were validated using sinigrin, a well-referenced substrate of Myr. Michaelis-Menten constant of the synthetized GL-SH was comparable to sinigrin, showing that they both have similar affinity towards Myr. It was demonstrated that transverse diffusion of laminar flow profiles was well adapted for in-capillary Mixing of nanoparticles (AuNPs) with proteins (Myr) provided that the incubation time is inferior to 20 min. Only low reaction volume (nL to few μL) and short analysis time (<5 min) were required. The electrophoretic conditions were optimized in order to evaluate and to confirm the AuNPs stability before and after functionalization by CE/UV based on surface plasmon resonance band red-shifting. The hydrolysis of the functionalized AuNPs was subsequently evaluated using the developed CE-C4D/UV approach. Repeatabilities of enzymatic assays, of electrophoretic analyses and of batch-to-batch functionalized AuNPs were excellent.
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Yang S, Li Y, Li F, Yang Z, Quan F, Zhou L, Pu Q. Thiol-ene Click Derivatization for the Determination of Acrylamide in Potato Products by Capillary Electrophoresis with Capacitively Coupled Contactless Conductivity Detection. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:8053-8060. [PMID: 31276393 DOI: 10.1021/acs.jafc.9b01525] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The development of analytical methods for acrylamide formed during food processing is of great significance for food safety, but limited by its inherent characteristics, the analysis of acrylamide is a continuing challenge. In this study, an efficient derivatization strategy for acrylamide based on thiol-ene click reaction with cysteine as derivatization reagent was proposed, and the resulting derivative was then analyzed by capillary electrophoresis with capacitively coupled contactless conductivity detection (CE-C4D). After systematic investigation including catalyst dosage (0-20 mM), reaction temperature (30-90 °C) and time (1-60 min), and cysteine concentration (0.2-3.6 mM), acrylamide could be efficiently labeled by 2.0 mM cysteine at 70 °C for 10 min using 4 mM n-butylamine as catalyst. Application of 10 mM triethylamine as separation buffer, the labeled acrylamide was analyzed within 2.0 min, and the relative standard deviations of migration time and peak area were less than 0.84% and 5.6%, indicating good precision. The C4D signal of acrylamide derivative showed a good linear relationship with acrylamide concentration in the range of 7-200 μM with the correlation coefficient of 0.9991. The limit of detection and limit of quantification were calculated to be 0.16 μM and 0.52 μM, respectively. Assisted further by the QuEChERS (quick, easy, cheap, effective, rugged, and safe) sample pretreatment, the developed derivatization strategy and subsequent CE-C4D method were successfully applied for the determination of acrylamide in potato products.
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Affiliation(s)
- Shuping Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Yuting Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Fan Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Zhenyu Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Feifei Quan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Lei Zhou
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Qiaosheng Pu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
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Kubáň P, Dvořák M, Kubáň P. Capillary electrophoresis of small ions and molecules in less conventional human body fluid samples: A review. Anal Chim Acta 2019; 1075:1-26. [PMID: 31196414 DOI: 10.1016/j.aca.2019.05.004] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 05/02/2019] [Accepted: 05/03/2019] [Indexed: 01/05/2023]
Abstract
In recent years, advances in sensitive analytical techniques have encouraged the analysis of various compounds in biological fluids. While blood serum, blood plasma and urine still remain the golden standards in clinical, toxicological and forensic science, analyses of other body fluids, such as breast milk, exhaled breath condensate, sweat, saliva, amniotic fluid, cerebrospinal fluid, or capillary blood in form of dried blood spots are becoming more popular. This review article focuses on capillary electrophoresis and microchip electrophoresis of small ions and molecules (e.g. inorganic cations/anions, basic/acidic drugs, small acids/bases, amino acids, peptides and other low molecular weight analytes) in various less conventional human body fluids and hopes to stimulate further interest in the field.
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Affiliation(s)
- Petr Kubáň
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Veveří 97, CZ-60200, Brno, Czech Republic
| | - Miloš Dvořák
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Veveří 97, CZ-60200, Brno, Czech Republic
| | - Pavel Kubáň
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Veveří 97, CZ-60200, Brno, Czech Republic.
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Chen Z, Wang T, Guo M, Chang H, Zhou H, Wang Y, Ye J, Chu Q, Huang D. Electrophoretic analysis of polyamines in exhaled breath condensate based on gold-nanoparticles microextraction coupled with field-amplified sample stacking. Talanta 2019; 198:480-486. [PMID: 30876590 DOI: 10.1016/j.talanta.2019.02.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 01/26/2019] [Accepted: 02/03/2019] [Indexed: 12/29/2022]
Abstract
In this work, citrate-capped gold-nanoparticles (citrate-AuNPs) have been firstly used for selective extraction of trace polyamines, putrescine (Put) and cadaverine (Cad), followed by field-amplified sample stacking (FASS) coupled with capillary electrophoresis and capacitively coupled contactless conductivity detection (FASS-CE-C4D). Put and Cad were extracted by electrostatic attractions between the amine group of the polyamines and the citrate ligands adsorbed on the surfaces of AuNPs. AuNPs microextraction (AuNPs-ME) effectively shortened preparation time (50 min) by introducing ultrasound, and the required sample extraction volume was only 1 mL. Furthermore, a synergistic enrichment strategy based on off-line AuNPs-ME and on-line FASS significantly improved the detection sensitivity, making the enrichment factors up to 1726-1887 times. Under the optimum conditions, Put and Cad could be well separated from the potential coexisting substances and then directly determined by CE-C4D without derivatization. Due to its low sample consumption, high sensitivity (LODs: 0.070-0.17 ng mL-1), and acceptable recoveries (90-105%), this AuNPs-ME/FASS-CE-C4D method provides a rapid, economical and eco-friendly approach for direct determination of polyamines in human exhaled breath condensate, and has potential application prospects in preliminary noninvasive diagnosis of oral and respiratory inflammation.
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Affiliation(s)
- Zheyan Chen
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Tingting Wang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Mengnan Guo
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Hui Chang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Huan Zhou
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Ying Wang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Jiannong Ye
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Qingcui Chu
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China.
| | - Dongping Huang
- Shanghai Putuo District People's Hospital, Shanghai 200060, China.
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Guadalupe Coelho A, Fernanda Souza de Jesus F, de Assis Pallos L, Alberto Fracassi da Silva J, Pereira de Jesus D. Capillary electrophoresis with capacitively coupled contactless conductivity detection for the determination of propionate and sorbate in bread. J Sep Sci 2018; 41:3932-3937. [DOI: 10.1002/jssc.201800705] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 08/13/2018] [Accepted: 08/16/2018] [Indexed: 12/15/2022]
Affiliation(s)
| | | | | | - José Alberto Fracassi da Silva
- Institute of Chemistry; University of Campinas; UNICAMP; Campinas SP Brazil
- Instituto Nacional de Ciência e Tecnologia de Bioanalítica; Campinas SP Brazil
| | - Dosil Pereira de Jesus
- Institute of Chemistry; University of Campinas; UNICAMP; Campinas SP Brazil
- Instituto Nacional de Ciência e Tecnologia de Bioanalítica; Campinas SP Brazil
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Mukhtar NH, Mamat NA, See HH. Monitoring of tobramycin in human plasma via mixed matrix membrane extraction prior to capillary electrophoresis with contactless conductivity detection. J Pharm Biomed Anal 2018; 158:184-188. [DOI: 10.1016/j.jpba.2018.05.044] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 05/26/2018] [Accepted: 05/29/2018] [Indexed: 11/27/2022]
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13
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Kubáň P, Hauser PC. Contactless conductivity detection for analytical techniques: Developments from 2016 to 2018. Electrophoresis 2018; 40:124-139. [PMID: 30010203 DOI: 10.1002/elps.201800248] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 07/10/2018] [Accepted: 07/10/2018] [Indexed: 01/05/2023]
Abstract
The publications concerning capacitively coupled contactless conductivity detection for the 2-year period from mid-2016 to mid-2018 are covered in this update to the earlier reviews of the series. Relatively few reports on fundamental investigations or new designs have appeared in the literature in this time interval, but the development of new applications with the detection method has continued strongly. Most often, contactless conductivity measurements have been employed for the detection of inorganic or small organic ions in conventional capillary electrophoresis, less often in microchip electrophoresis. A number of other uses, such as detection in chromatography or the gauging of bubbles in streams have also been reported.
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Affiliation(s)
- Pavel Kubáň
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Brno, Czech Republic
| | - Peter C Hauser
- Department of Chemistry, University of Basel, Basel, Switzerland
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20th anniversary of axial capacitively coupled contactless conductivity detection in capillary electrophoresis. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.03.007] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Ishikawa AA, da Silva RM, Santos MSF, da Costa ET, Sakamoto AC, Carrilho E, de Gaitani CM, Garcia CD. Determination of topiramate by capillary electrophoresis with capacitively-coupled contactless conductivity detection: A powerful tool for therapeutic monitoring in epileptic patients. Electrophoresis 2018; 39:2598-2604. [DOI: 10.1002/elps.201800046] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 02/27/2018] [Accepted: 03/17/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Aline Akemi Ishikawa
- Department of Chemistry; Clemson University; Clemson SC USA
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto; Universidade de São Paulo; Ribeirão Preto SP Brazil
- Instituto de Quimica de São Carlos; Universidade de São Paulo; São Carlos SP Brazil
| | - Rodrigo Moreira da Silva
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto; Universidade de São Paulo; Ribeirão Preto SP Brazil
| | - Mauro Sérgio Ferreira Santos
- Department of Chemistry; Clemson University; Clemson SC USA
- Instituto de Química; Universidade de São Paulo; São Paulo SP Brazil
| | | | - Americo Ceiki Sakamoto
- Faculdade de Medicina de Ribeirão Preto; Universidade de São Paulo; Ribeirão Preto SP Brazil
| | - Emanuel Carrilho
- Instituto de Quimica de São Carlos; Universidade de São Paulo; São Carlos SP Brazil
- Instituto Nacional de Ciência e Tecnologia de Bioanalítica - INCTBio; Campinas SP Brazil
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Phillips TM. Recent advances in CE and microchip-CE in clinical applications: 2014 to mid-2017. Electrophoresis 2017; 39:126-135. [PMID: 28853177 DOI: 10.1002/elps.201700283] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 08/09/2017] [Accepted: 08/10/2017] [Indexed: 11/11/2022]
Abstract
CE and microchip CE (ME) are powerful tools for the analysis of a number of different analytes and have been applied to a variety of clinical fields and human samples. This review will present an overview of the most recent applications of these techniques to different areas of clinical medicine during the period of 2014 to mid-2017. CE and ME have been applied to clinical chemistry, drug detection and monitoring, hematology, infectious diseases, oncology, endocrinology, neonatology, nephrology, and genetic screening. Samples examined range from serum, plasma, and urine to lest utilized materials such as tears, cerebral spinal fluid, sweat, saliva, condensed breath, single cells, and biopsy tissue. Examples of clinical applications will be given along with the various detection systems employed.
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Affiliation(s)
- Terry M Phillips
- Department of Pharmaceutics, School of Pharmacy, Virginia Commonwealth University, Richmond, VA, USA
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