1
|
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] [MESH Headings] [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.
Collapse
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.
| |
Collapse
|
2
|
Adhikari S, Mandal S, Kim DH. 1D/2D constructed Bi 2S 3/Bi 2O 2CO 3 direct Z-Scheme heterojunction: A versatile photocatalytic material for boosted photodegradation, photoreduction and photoelectrochemical detection of water-based contaminants. JOURNAL OF HAZARDOUS MATERIALS 2021; 418:126263. [PMID: 34111747 DOI: 10.1016/j.jhazmat.2021.126263] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/09/2021] [Accepted: 05/28/2021] [Indexed: 06/12/2023]
Abstract
In this work, two-dimensional Bi2O2CO3 disk is synthesized, followed by the growth of Bi2S3 over Bi2O2CO3 via topotactic transformation by controlling the amount of thiourea under hydrothermal conditions. The synthesized composite catalyst is investigated for photocatalytic oxidation and reduction of tetracycline hydrochloride and hexavalent chromium under visible light irradiation. High interfacial contact between the Bi2O2CO3 disk0 and Bi2S3 fiber is confirmed via high-resolution microscopic imaging. Enhanced light absorption and increased charge carrier separation is observed after the formation of the Bi2S3/Bi2O2CO3 composite. The Bi2S3/Bi2O2CO3 composite grown using 1 mmol of thiourea shows approximately 98% degradation of tetracycline hydrochloride after 120 min and 99% Cr(VI) reduction after 90 min of photochemical reaction under visible light irradiation. The charge separation is due to the formed internal electric field at the interface, which upon light irradiation follows a z-scheme charge transfer hindering the recombination at the Bi2S3 and Bi2O2CO3 interface, thereby contributing efficiently to the photochemical process. In addition, the mechanism of the photochemical reaction for the degradation of pollutants is supported using quencher and probe experiments. Furthermore, photoelectrochemical detection of antibiotic in aqueous solution is conducted to understand the sensing feasibility of the synthesized system.
Collapse
Affiliation(s)
- Sangeeta Adhikari
- School of Chemical Engineering, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea; Catalyst Research Institute, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
| | - Sandip Mandal
- School of Earth Science and Environmental Engineering, GIST, S6 123 Cheomdan-gwagiro (Oryong-dong), Buk-gu, Gwangju 61005, Republic of Korea
| | - Do-Heyoung Kim
- School of Chemical Engineering, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea.
| |
Collapse
|
3
|
Water-Soluble Carbon Quantum Dots Modified by Amino Groups for Polarization Fluorescence Detection of Copper (II) Ion in Aqueous Media. Processes (Basel) 2020. [DOI: 10.3390/pr8121573] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Industrialization is serious for changing the environment and natural water composition, especially near cities and manufacturing areas. Logically, the new ultrasensitive technology for precise control of the quality and quantity of water sources is needed. Herein, an innovative method of polarization fluorescence analysis (FPA) was developed to measure the concentration of heavy metals in water. The approach was successfully applied for precise tests with reduced analysis time and increased measurement efficiency among laboratory methods. Based on this work, the investigations established the new type of carbon quantum dots (CQDs) with controllable fluorescence properties and functionalized amino—groups, which is appropriate for FPA. The parameters of one and two-step microwave synthesis routes are adjusted wavelength and fluorescence intensity of CQDs. Finally, under optimized conditions, the FPA is showed the detection of copper (2+) cations in water samples below European Union standard (2 mg/L). Moreover, in comparison with fluorescence quenching, polarization fluorescence is proved as a convenient, simple, and rapid test method for effective water safety analysis.
Collapse
|
4
|
Falah S, Xue Y, Taleb A, Beji M. Electrochemical sensors performance: The role of specific surface and recognition receptors footprint. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.08.123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
5
|
Electrodialytic in-line preconcentration for ionic solute analysis. Talanta 2018; 180:176-181. [DOI: 10.1016/j.talanta.2017.12.054] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 12/15/2017] [Accepted: 12/15/2017] [Indexed: 11/20/2022]
|
6
|
Ferreira Santos MS, Silva Lopes F, Gutz IGR. Online monitoring of electrocatalytic reactions of alcohols at platinum and gold electrodes in acidic, neutral and alkaline media by capillary electrophoresis with contactless conductivity detection (EC-CE-C4
D). Electrophoresis 2017; 38:2725-2732. [DOI: 10.1002/elps.201700124] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 04/17/2017] [Accepted: 04/17/2017] [Indexed: 11/11/2022]
Affiliation(s)
| | - Fernando Silva Lopes
- Departamento de Química Fundamental; Instituto de Química; Universidade de São Paulo; São Paulo SP Brazil
| | - Ivano Gebhardt Rolf Gutz
- Departamento de Química Fundamental; Instituto de Química; Universidade de São Paulo; São Paulo SP Brazil
| |
Collapse
|
7
|
Santos MSF, da Costa ET, Gutz IGR, Garcia CD. Analysis of Methanol in the Presence of Ethanol, Using a Hybrid Capillary Electrophoresis Device with Electrochemical Derivatization and Conductivity Detection. Anal Chem 2017; 89:1362-1368. [DOI: 10.1021/acs.analchem.6b04440] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Mauro Sérgio Ferreira Santos
- Departamento
de Química Fundamental, Instituto de Química, University of São Paulo, São Paulo, Brazil
- Department
of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Eric Tavares da Costa
- Department
of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Ivano Gebhardt Rolf Gutz
- Departamento
de Química Fundamental, Instituto de Química, University of São Paulo, São Paulo, Brazil
| | - Carlos D. Garcia
- Department
of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| |
Collapse
|
8
|
Ribeiro MM, Oliveira TC, Batista AD, Muñoz RA, Richter EM. A sub-minute electrophoretic method for simultaneous determination of naphazoline and zinc. J Chromatogr A 2016; 1472:134-137. [DOI: 10.1016/j.chroma.2016.10.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 10/07/2016] [Accepted: 10/11/2016] [Indexed: 12/01/2022]
|
9
|
Kler PA, Sydes D, Huhn C. Column–coupling strategies for multidimensional electrophoretic separation techniques. Anal Bioanal Chem 2014; 407:119-38. [DOI: 10.1007/s00216-014-8099-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 08/06/2014] [Accepted: 08/08/2014] [Indexed: 10/24/2022]
|
10
|
Kitagawa F, Otsuka K. Recent applications of on-line sample preconcentration techniques in capillary electrophoresis. J Chromatogr A 2014; 1335:43-60. [DOI: 10.1016/j.chroma.2013.10.066] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 10/18/2013] [Accepted: 10/21/2013] [Indexed: 12/21/2022]
|
11
|
Santos MSF, Lopes FS, Gutz IGR. Electrochemical derivatization-capillary electrophoresis-contactless conductivity detection: A versatile strategy for simultaneous determination of cationic, anionic, and neutral analytes. Electrophoresis 2013; 35:864-9. [DOI: 10.1002/elps.201300463] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Revised: 11/04/2013] [Accepted: 11/05/2013] [Indexed: 11/09/2022]
|
12
|
Simulation of oxidative stress of guanosine and 8-oxo-7,8-dihydroguanosine by electrochemically assisted injection–capillary electrophoresis–mass spectrometry. Anal Bioanal Chem 2013; 406:687-94. [DOI: 10.1007/s00216-013-7500-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 11/06/2013] [Accepted: 11/08/2013] [Indexed: 11/26/2022]
|
13
|
Breadmore MC, Shallan AI, Rabanes HR, Gstoettenmayr D, Abdul Keyon AS, Gaspar A, Dawod M, Quirino JP. Recent advances in enhancing the sensitivity of electrophoresis and electrochromatography in capillaries and microchips (2010-2012). Electrophoresis 2013; 34:29-54. [PMID: 23161056 DOI: 10.1002/elps.201200396] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 09/03/2012] [Accepted: 09/04/2012] [Indexed: 12/21/2022]
Abstract
CE has been alive for over two decades now, yet its sensitivity is still regarded as being inferior to that of more traditional methods of separation such as HPLC. As such, it is unsurprising that overcoming this issue still generates much scientific interest. This review continues to update this series of reviews, first published in Electrophoresis in 2007, with updates published in 2009 and 2011 and covers material published through to June 2012. It includes developments in the field of stacking, covering all methods from field amplified sample stacking and large volume sample stacking, through to isotachophoresis, dynamic pH junction and sweeping. Attention is also given to online or inline extraction methods that have been used for electrophoresis.
Collapse
Affiliation(s)
- Michael C Breadmore
- Australian Centre for Research on Separation Science, School of Chemistry, University of Tasmania, Hobart, Tasmania, Australia.
| | | | | | | | | | | | | | | |
Collapse
|
14
|
Kubáň P, Hauser PC. Contactless conductivity detection for analytical techniques: Developments from 2010 to 2012. Electrophoresis 2012; 34:55-69. [DOI: 10.1002/elps.201200358] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 08/08/2012] [Accepted: 08/09/2012] [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
| |
Collapse
|
15
|
Electrochemically Assisted Injection in Combination with Capillary Electrophoresis-Mass Spectrometry (EAI-CE-MS) - Mechanistic and Quantitative Studies of the Reduction of 4-Nitrotoluene at Various Carbon-Based Screen-Printed Electrodes. ELECTROANAL 2012. [DOI: 10.1002/elan.201200393] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
16
|
Palatzky P, Matysik FM. Development and characterization of a novel semiautomated arrangement for electrochemically assisted injection in combination with capillary electrophoresis time-of-flight mass spectrometry. Electrophoresis 2012; 33:2689-94. [DOI: 10.1002/elps.201200088] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
17
|
Santos MSF, Lopes FS, Vidal DTR, do Lago CL, Gutz IGR. From Sample Processing to Quantification: A Full Electrochemical Approach for Neutral Analyte Derivatization, Capillary Electrophoresis Separation, and Contactless Conductivity Detection. Anal Chem 2012; 84:7599-602. [DOI: 10.1021/ac3019312] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Fernando Silva Lopes
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748 05508-000,
São Paulo, SP, Brazil
| | - Denis Tadeu Rajh Vidal
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748 05508-000,
São Paulo, SP, Brazil
| | - Claudimir Lucio do Lago
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748 05508-000,
São Paulo, SP, Brazil
| | - Ivano Gebhardt Rolf Gutz
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748 05508-000,
São Paulo, SP, Brazil
| |
Collapse
|
18
|
Liu B, Zhang Y, Mayer D, Krause HJ, Jin Q, Zhao J, Offenhäusser A, Xu Y. Determination of heavy metal ions by microchip capillary electrophoresis coupled with contactless conductivity detection. Electrophoresis 2012; 33:1247-50. [PMID: 22589101 DOI: 10.1002/elps.201100626] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
An integrated detection circuitry based on a lock-in amplifier was designed for contactless conductivity determination of heavy metals. Combined with a simple-structure electrophoresis microchip, the detection system is successfully utilized for the separation and determination of various heavy metals. The influences of the running buffer and detection conditions on the response of the detector have been investigated. Six millimole 2-morpholinoethanesulfonic acid + histidine were selected as buffer for its stable baseline and high sensitivity. The best signals were recorded with a frequency of 38 kHz and 20 V(pp). The results showed that Mn(2+), Cd(2+), Co(2+), and Cu(2+) can be successfully separated and detected within 100 s by our system. The detection limits for five heavy metals (Mn(2+), Pb(2+), Cd(2+), Co(2+), and Cu(2+)) were determined to range from about 0.7 to 5.4 μM. This microchip system performs a crucial step toward the realization of a simple, inexpensive, and portable analytical device for metal analysis.
Collapse
Affiliation(s)
- Benyan Liu
- Peter Grünberg Institute, Bioelectronics (PGI-8), Forschungszentrum Jülich, Jülich, Germany
| | | | | | | | | | | | | | | |
Collapse
|
19
|
Mark JJP, Scholz R, Matysik FM. Electrochemical methods in conjunction with capillary and microchip electrophoresis. J Chromatogr A 2012; 1267:45-64. [PMID: 22824222 DOI: 10.1016/j.chroma.2012.07.009] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 07/01/2012] [Accepted: 07/06/2012] [Indexed: 02/06/2023]
Abstract
Electromigrative techniques such as capillary and microchip electrophoresis (CE and MCE) are inherently associated with various electrochemical phenomena. The electrolytic processes occurring in the buffer reservoirs have to be considered for a proper design of miniaturized electrophoretic systems and a suitable selection of buffer composition. In addition, the control of the electroosmotic flow plays a crucial role for the optimization of CE/MCE separations. Electroanalytical methods have significant importance in the field of detection in conjunction with CE/MCE. At present, amperometric detection and contactless conductivity detection are the predominating electrochemical detection methods for CE/MCE. This paper reviews the most recent trends in the field of electrochemical detection coupled to CE/MCE. The emphasis is on methodical developments and new applications that have been published over the past five years. A rather new way for the implementation of electrochemical methods into CE systems is the concept of electrochemically assisted injection which involves the electrochemical conversions of analytes during the injection step. This approach is particularly attractive in hyphenation to mass spectrometry (MS) as it widens the range of CE-MS applications. An overview of recent developments of electrochemically assisted injection coupled to CE is presented.
Collapse
Affiliation(s)
- Jonas J P Mark
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Regensburg, Germany
| | | | | |
Collapse
|
20
|
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
|
21
|
Elbashir AA, Aboul-Enein HY. Recent advances in applications of capillary electrophoresis with capacitively coupled contactless conductivity detection (CE-C⁴D): an update. Biomed Chromatogr 2012; 26:990-1000. [PMID: 22430262 DOI: 10.1002/bmc.2729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Accepted: 02/12/2012] [Indexed: 11/06/2022]
Abstract
Capillary electrophoresis with a capacitively contactless conductivity detector (CE-C⁴D) is becoming a significant useful technique for the analysis of analytes in various fields such as pharmaceutical, biomedical, food and environmental. This review is an update describing the recent developments in the application of CE with a C⁴D detector.
Collapse
|
22
|
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]
|
23
|
Lopes FS, Nogueira T, do Lago CL, Gutz IGR. Capillary Electrophoresis Assisted Flow System for In Situ Analysis of Products of Heterogeneous Electrocatalytic and Catalytic Processes: Application to the Oxidation of Glycerol. ELECTROANAL 2011. [DOI: 10.1002/elan.201100321] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
24
|
Lopes FS, Coelho LHG, Gutz IGR. Automated two-dimensional separation flow system with electrochemical preconcentration, stripping, capillary electrophoresis and contactless conductivity detection for trace metal ion analysis. Electrophoresis 2011; 32:939-46. [DOI: 10.1002/elps.201000479] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Revised: 10/27/2010] [Accepted: 10/27/2010] [Indexed: 11/06/2022]
|