1
|
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]
|
2
|
Lancioni C, Aspromonte J, Tascon M, Gagliardi LG. Development of a background electrolyte for the determination of inorganic cations in high ionic strength samples by capillary electrophoresis with indirect UV-absorption detection. J Chromatogr A 2021; 1645:462091. [PMID: 33845250 DOI: 10.1016/j.chroma.2021.462091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/17/2021] [Accepted: 03/19/2021] [Indexed: 11/30/2022]
Abstract
In this study, a background electrolyte capable to separate and quantify inorganic cations in high ionic strength samples by UV-absorption indirect detection was designed. In this regard, the four most abundant monovalent and divalent cations in earth crust (K+, Na+, Ca+2, Mg+2) were selected as model compounds. A group of small carboxylic acids and, several toluidines and pyridines were evaluated as mild strength complexing agents and chromophoric probes, respectively. The optimized background electrolyte was composed of 200 mM 2,4,6-trimethylpyridine as the chromophoric probe, 250 mM lactic acid as the weak complexing agent and pH buffering reagent (adjusted to pH 4.5), and 5% v/v methanol as organic solvent modifier. Based on a minimum number of components, it provided outstanding separation performance in less than 4 min in a wide linear dynamic range (10 - 2500 µg·mL-1). Performances were contrasted against a reference method based on conductometric detection. Furthermore, studies of separation efficiency and peak shape were carried out at different analyte concentrations in high electric conductivity solutions. The herein developed method demonstrated exceptional features in terms of limits of detection (~10 µg·mL-1), resolution, speed of analysis, sensitivity and peak capacity in high electric conductivity samples. Moreover, the method was successfully applied to high ionic strength samples such as rock digest, sea water, soy sauce and isotonic drinks.
Collapse
Affiliation(s)
- Carlina Lancioni
- Laboratorio de Investigación y Desarrollo de Métodos Analíticos, LIDMA, Facultad de Ciencias Exactas (Universidad Nacional de La Plata, CIC-PBA, CONICET), Calle 47 esq. 115, La Plata, 1900, Argentina
| | - Juan Aspromonte
- Laboratorio de Investigación y Desarrollo de Métodos Analíticos, LIDMA, Facultad de Ciencias Exactas (Universidad Nacional de La Plata, CIC-PBA, CONICET), Calle 47 esq. 115, La Plata, 1900, Argentina; Department of Pharmaceutical and Pharmacological Sciences, Pharmaceutical Analysis, KU Leuven - University of Leuven, Herestraat 49 - PB923, 3000, Leuven, Belgium
| | - Marcos Tascon
- Instituto de Investigación e Ingeniería Ambiental (IIIA-CONICET-UNSAM), Universidad Nacional de San Martín, 25 de Mayo y Francia, B1650, San Martín, Argentina.
| | - Leonardo G Gagliardi
- Laboratorio de Investigación y Desarrollo de Métodos Analíticos, LIDMA, Facultad de Ciencias Exactas (Universidad Nacional de La Plata, CIC-PBA, CONICET), Calle 47 esq. 115, La Plata, 1900, Argentina.
| |
Collapse
|
3
|
Li X, Zheng Z, Liu H, Gao Y. Development of a micellar electrokinetic capillary chromatography method for the determination of four naphthalenediols in cosmetics and a comparison with a HPLC method. Electrophoresis 2020; 41:1991-1999. [PMID: 32839980 DOI: 10.1002/elps.202000184] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/06/2020] [Accepted: 08/07/2020] [Indexed: 11/10/2022]
Abstract
A micellar electrokinetic capillary chromatography (MEKC) method with ultraviolet visible (UV) detection was used for the determination of 1,7-naphthalenediol, 2,3-naphthalenediol, 1,5-naphthalenediol, and 2,7-naphthalenediol in cosmetics. The current method for their determination in various cosmetics is high-performance liquid chromatography (HPLC). Separation conditions affecting the MEKC method were optimized as 20 mM Na2 B4 O7 -50mM SDS, pH 9.8, with 22 kV applied voltage and UV detection at 230 nm. Under optimal conditions, electrophoretic analysis was completed in less than 6 min, with limit of detection (LOD) of 0.070-0.19 μg/mL and limit of quantitation (LOQ) of 0.23-0.63 μg/mL. A good linear relationship (r2 > 0.99) was obtained at the range of 0.75-20 μg/mL. Recoveries for the four naphthalenediols in lotion, loose powder, and sun cream are between 91.2-107.2% with relative standard deviation (RSD) less than 4.04%. The method has been successfully applied to the determination of the four naphthalenediols in different kinds of cosmetics. A comparison with HPLC-UV method was also carried out according to the National Standards of the People's Republic of China. The results obtained by MEKC and HPLC methods are comparable, but the proposed MEKC method can help us obtain a much shorter detection time and low cost.
Collapse
Affiliation(s)
- Xiaobin Li
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China
| | - Zhihan Zheng
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China
| | - Huitao Liu
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China
| | - Yuan Gao
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China
| |
Collapse
|
4
|
Indirect CE‐UV detection for the characterization of organic and inorganic ions of a broad mobility and pK
a
range in engine coolants. Electrophoresis 2019; 40:2806-2809. [DOI: 10.1002/elps.201900198] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 07/15/2019] [Accepted: 08/09/2019] [Indexed: 11/07/2022]
|
5
|
Bi J, Li T, Ren H, Ling R, Wu Z, Qin W. Capillary electrophoretic determination of heavy-metal ions using 11-mercaptoundecanoic acid and 6-mercapto-1-hexanol co-functionalized gold nanoparticle as colorimetric probe. J Chromatogr A 2019; 1594:208-215. [DOI: 10.1016/j.chroma.2019.02.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/17/2019] [Accepted: 02/04/2019] [Indexed: 11/25/2022]
|
6
|
Xie X, Yang Y, Zhou H, Li M, Zhu Z. Quality monitoring methods of initial and terminal manufacture of LiFePO4 based lithium ion batteries by capillary electrophoresis. Talanta 2018; 179:822-827. [DOI: 10.1016/j.talanta.2017.12.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 11/24/2017] [Accepted: 12/02/2017] [Indexed: 10/18/2022]
|
7
|
Gotti R, Fiori J, Liverani L, Spelta F. Capillary electrophoresis method for speciation of iron (II) and iron (III) in pharmaceuticals by dual precapillary complexation. Electrophoresis 2015. [DOI: 10.1002/elps.201500235] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Roberto Gotti
- Department of Pharmacy and Biotechnology; University of Bologna; Bologna Italy
| | - Jessica Fiori
- Department of Pharmacy and Biotechnology; University of Bologna; Bologna Italy
| | | | | |
Collapse
|
8
|
Abdul Keyon AS, Guijt RM, Bolch CJ, Breadmore MC. Transient isotachophoresis-capillary zone electrophoresis with contactless conductivity and ultraviolet detection for the analysis of paralytic shellfish toxins in mussel samples. J Chromatogr A 2014; 1364:295-302. [DOI: 10.1016/j.chroma.2014.08.074] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 08/20/2014] [Accepted: 08/22/2014] [Indexed: 01/12/2023]
|
9
|
Spudeit DA, Piovezan M, Dolzan MD, Vistuba JP, Azevedo MS, Vitali L, Leal Oliveira MA, Oliveira Costa AC, Micke GA. Simultaneous determination of free and total glycerol in biodiesel by capillary electrophoresis using multiple short-end injection. Electrophoresis 2013; 34:3333-40. [DOI: 10.1002/elps.201300371] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 09/10/2013] [Accepted: 09/16/2013] [Indexed: 11/11/2022]
Affiliation(s)
| | - Marcel Piovezan
- Department of Chemistry; Federal University of Santa Catarina; Florianopolis SC Brazil
| | - Maressa D. Dolzan
- Department of Chemistry; Federal University of Santa Catarina; Florianopolis SC Brazil
| | | | - Mônia Stremel Azevedo
- Department of Food Science Technologies; Federal University of Santa Catarina; Florianopolis SC Brazil
| | - Luciano Vitali
- Department of Food Science Technologies; Federal University of Santa Catarina; Florianopolis SC Brazil
| | | | | | - Gustavo Amadeu Micke
- Department of Chemistry; Federal University of Santa Catarina; Florianopolis SC Brazil
| |
Collapse
|
10
|
Tantra R, Robinson K, Sikora A. Variability of microchip capillary electrophoresis with conductivity detection. Electrophoresis 2013; 35:263-70. [DOI: 10.1002/elps.201300175] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 05/23/2013] [Accepted: 05/24/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Ratna Tantra
- Surface and Nanoanalysis, National Physical Laboratory; Teddington UK
| | - Kenneth Robinson
- Surface and Nanoanalysis, National Physical Laboratory; Teddington UK
| | - Aneta Sikora
- Surface and Nanoanalysis, National Physical Laboratory; Teddington UK
| |
Collapse
|
11
|
Masár M, Bomastyk B, Bodor R, Horčičiak M, Danč L, Troška P, Kuss HM. Determination of chloride, sulfate and nitrate in drinking water by microchip electrophoresis. Mikrochim Acta 2012. [DOI: 10.1007/s00604-012-0788-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
12
|
Yang J, Li HF, Li M, Lin JM. Gas dispersion concentration of trace inorganic contaminants from fuel gas and analysis using head-column field-amplified sample stacking capillary electrophoresis. Analyst 2012; 137:3710-6. [DOI: 10.1039/c2an35409h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
13
|
Kubáň P, Timerbaev AR. CE of inorganic species - A review of methodological advancements over 2009-2010. Electrophoresis 2011; 33:196-210. [DOI: 10.1002/elps.201100357] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2011] [Revised: 07/30/2011] [Accepted: 07/30/2011] [Indexed: 01/13/2023]
|
14
|
Experimental and numerical analysis of high-resolution injection technique for capillary electrophoresis microchip. Int J Mol Sci 2011; 12:3594-605. [PMID: 21747696 PMCID: PMC3131580 DOI: 10.3390/ijms12063594] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Revised: 05/11/2011] [Accepted: 05/25/2011] [Indexed: 12/15/2022] Open
Abstract
This study presents an experimental and numerical investigation on the use of high-resolution injection techniques to deliver sample plugs within a capillary electrophoresis (CE) microchip. The CE microfluidic device was integrated into a U-shaped injection system and an expansion chamber located at the inlet of the separation channel, which can miniize the sample leakage effect and deliver a high-quality sample plug into the separation channel so that the detection performance of the device is enhanced. The proposed 45° U-shaped injection system was investigated using a sample of Rhodamine B dye. Meanwhile, the analysis of the current CE microfluidic chip was studied by considering the separation of Hae III digested ϕx-174 DNA samples. The experimental and numerical results indicate that the included 45° U-shaped injector completely eliminates the sample leakage and an expansion separation channel with an expansion ratio of 2.5 delivers a sample plug with a perfect detection shape and highest concentration intensity, hence enabling an optimal injection and separation performance.
Collapse
|
15
|
Determination of emulsion explosives with Span-80 as emulsifier by gas chromatography–mass spectrometry. J Chromatogr A 2011; 1218:3521-8. [DOI: 10.1016/j.chroma.2011.03.065] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2010] [Revised: 03/15/2011] [Accepted: 03/28/2011] [Indexed: 11/20/2022]
|
16
|
Aleksenko SS, Gareil P, Timerbaev AR. Analysis of degradation products of chemical warfare agents using capillary electrophoresis. Analyst 2011; 136:4103-18. [DOI: 10.1039/c1an15440k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
17
|
Flanigan PM, Ross D, Shackman JG. Determination of inorganic ions in mineral water by gradient elution moving boundary electrophoresis. Electrophoresis 2010; 31:3466-74. [DOI: 10.1002/elps.201000230] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
18
|
Hou X, Deng D, Wu X, Lv Y, Zhang J. Simultaneous stacking of cationic and anionic compounds in single run capillary zone electrophoresis by two-end field amplified sample injection. J Chromatogr A 2010; 1217:5622-7. [DOI: 10.1016/j.chroma.2010.06.070] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2009] [Revised: 06/24/2010] [Accepted: 06/24/2010] [Indexed: 11/30/2022]
|
19
|
Development of a fast capillary electrophoresis method to determine inorganic cations in biodiesel samples. Anal Chim Acta 2010; 673:200-5. [DOI: 10.1016/j.aca.2010.05.031] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Revised: 05/13/2010] [Accepted: 05/20/2010] [Indexed: 11/21/2022]
|
20
|
Fercher G, Haller A, Smetana W, Vellekoop MJ. End-to-End Differential Contactless Conductivity Sensor for Microchip Capillary Electrophoresis. Anal Chem 2010; 82:3270-5. [DOI: 10.1021/ac100041p] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Georg Fercher
- Institute of Sensor and Actuator Systems, Vienna University of Technology, Vienna, Austria, and IMA GmbH, Wiener Neustadt, Austria
| | - Anna Haller
- Institute of Sensor and Actuator Systems, Vienna University of Technology, Vienna, Austria, and IMA GmbH, Wiener Neustadt, Austria
| | - Walter Smetana
- Institute of Sensor and Actuator Systems, Vienna University of Technology, Vienna, Austria, and IMA GmbH, Wiener Neustadt, Austria
| | - Michael J. Vellekoop
- Institute of Sensor and Actuator Systems, Vienna University of Technology, Vienna, Austria, and IMA GmbH, Wiener Neustadt, Austria
| |
Collapse
|
21
|
Fercher G, Haller A, Smetana W, Vellekoop MJ. Ceramic capillary electrophoresis chip for the measurement of inorganic ions in water samples. Analyst 2010; 135:965-70. [PMID: 20419244 DOI: 10.1039/b922501c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a microchip capillary electrophoresis (CE) device build-up in low temperature co-fired ceramics (LTCC) multilayer technology for the analysis of major inorganic ions in water samples in less than 80 s. Contactless conductivity measurement is employed as a robust alternative to direct-contact conductivity detection schemes. The measurement electrodes are placed in a planar way at the top side of the CE chip and are realized by screen printing. Laser-cutting of channel and double-T injector structures is used to minimize irregularities and wall defects, elevating plate numbers per meter up to values of 110,000. Lowest limit of detection is 6 microM. The cost efficient LTCC module is attractive particularly for portable instruments in environmental applications because of its chemical inertness, hermeticity and easy three-dimensional integration capabilities of fluidic, electrical and mechanical components.
Collapse
Affiliation(s)
- Georg Fercher
- Integrated Microsystems Austria GmbH, Viktor Kaplan Strasse 2/1, 2700, Wiener Neustadt, Austria.
| | | | | | | |
Collapse
|