1
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Lamichhane HB, Arrigan DWM. Modulating the ion-transfer electrochemistry of perfluorooctanoate with serum albumin and β-cyclodextrin. Analyst 2024; 149:2647-2654. [PMID: 38546701 DOI: 10.1039/d3an02164e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are durable synthetic pollutants that persist in the environment and resist biodegradation. Ion-transfer electrochemistry at aqueous-organic interfaces is a simple strategy for the detection of ionised PFAS. Herein, we investigate the modulation of the ion transfer voltammetry of perfluorooctanoate (PFOA) at liquid-liquid micro-interface arrays by aqueous phase bovine serum albumin (BSA) or β-cyclodextrin (β-CD) and examine the determination of association constants for these binding interactions. By tracking the ion transfer current due to ionised, uncomplexed PFOA as a function of BSA or β-CD concentration, titration curves are produced. Fitting of a binding isotherm to these data provides the association constants. The association constant of PFOA with the BSA determined in this way was ca. 105 M-1 assuming a 1 : 1 binding. Likewise, the association constant for PFOA with β-CD was ca. 104 M-1 for a 1 : 1 β-CD-PFOA complex. Finally, the simultaneous effect of both BSA and β-CD on the ion transfer voltammetry of PFOA was studied, showing clearly that PFOA bound to BSA is released (de-complexed) upon addition of β-CD. The results presented here show ion transfer voltammetry as a simple strategy for the study of molecular and biomolecular binding of ionised PFAS and is potentially useful in understanding the affinity of different PFAS with aqueous phase binding agents such as proteins and carbohydrates.
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Affiliation(s)
- Hum Bahadur Lamichhane
- School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia.
| | - Damien W M Arrigan
- School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia.
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2
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Stelmaszczyk P, Kwaczyński K, Rudnicki K, Skrzypek S, Wietecha-Posłuszny R, Poltorak L. Nitrazepam and 7-aminonitrazepam studied at the macroscopic and microscopic electrified liquid-liquid interface. Mikrochim Acta 2023; 190:182. [PMID: 37052720 PMCID: PMC10101902 DOI: 10.1007/s00604-023-05739-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 03/09/2023] [Indexed: 04/14/2023]
Abstract
Two benzodiazepine type drugs, that is, nitrazepam and 7-aminonitrazepam, were studied at the electrified liquid-liquid interface (eLLI). Both drugs are illicit and act sedative in the human body and moreover are used as date rape drugs. Existence of the diazepine ring in the concerned chemicals structure and one additional amine group (for 7-aminonitrazepam) allows for the molecular charging below their pKa values, and hence, both drugs can cross the eLLI interface upon application of the appropriate value of the Galvani potential difference. Chosen molecules were studied at the macroscopic eLLI formed in the four electrode cell and microscopic eLLI formed within a microtip defined as the single pore having 25 μm in diameter. Microscopic eLLI was formed using only a few μL of the organic and the aqueous phase with the help of a 3D printed cell. Parameters such as limit of detection and voltammetric detection sensitivity are derived from the experimental data. Developed methodology was used to detect nitrazepam in pharmaceutical formulation and both drugs (nitrazepam and 7-aminonitrazepam) in spiked biological fluids (urine and blood).
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Affiliation(s)
- Paweł Stelmaszczyk
- Laboratory for Forensic Chemistry, Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Krakow, Poland
| | - Karolina Kwaczyński
- Electrochemistry@Soft Interfaces Team, Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403, Lodz, Poland
| | - Konrad Rudnicki
- Electrochemistry@Soft Interfaces Team, Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403, Lodz, Poland
| | - Sławomira Skrzypek
- Electrochemistry@Soft Interfaces Team, Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403, Lodz, Poland
| | - Renata Wietecha-Posłuszny
- Laboratory for Forensic Chemistry, Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Krakow, Poland.
| | - Lukasz Poltorak
- Electrochemistry@Soft Interfaces Team, Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403, Lodz, Poland.
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3
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Burgoyne ED, Molina-Osorio AF, Moshrefi R, Shanahan R, McGlacken GP, Stockmann TJ, Scanlon MD. Detection of Pseudomonas aeruginosa quorum sensing molecules at an electrified liquid|liquid micro-interface through facilitated proton transfer. Analyst 2021; 145:7000-7008. [PMID: 32869782 DOI: 10.1039/d0an01245a] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Miniaturization of electrochemical detection methods for point-of-care-devices is ideal for their integration and use within healthcare environments. Simultaneously, the prolific pathogenic bacteria Pseudomonas aeruginosa poses a serious health risk to patients with compromised immune systems. Recognizing these two factors, a proof-of-concept electrochemical method employing a micro-interface between water and oil (w/o) held at the tip of a pulled borosilicate glass capillary is presented. This method targets small molecules produced by P. aeruginosa colonies as signalling factors that control colony growth in a pseudo-multicellular process known as quorum sensing (QS). The QS molecules of interest are 4-hydroxy-2-heptylquinoline (HHQ) and 2-heptyl-3,4-dihydroxyquinoline (PQS, Pseudomonas quinolone signal). Hydrophobic HHQ and PQS molecules, dissolved in the oil phase, were observed electrochemically to facilitate proton transfer across the w/o interface. This interfacial complexation can be exploited as a facile electrochemical detection method for P. aeruginosa and is advantageous as it does not depend on the redox activity of HHQ/PQS. Interestingly, the limit-of-linearity is reached as [H+] ≈ [ligand]. Density functional theory calculations were performed to determine the proton affinities and gas-phase basicities of HHQ/PQS, as well as elucidate the likely site of stepwise protonation within each molecule.
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Affiliation(s)
- Edward D Burgoyne
- The Bernal Institute and Department of Chemical Sciences, School of Natural Sciences, University of Limerick (UL), Limerick V94 T9PX, Ireland.
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4
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Podrażka M, Witkowska Nery E, Henares TG, Jönsson-Niedziółka M, Arrigan DWM. Ion Transfer Voltammetry with an Electrochemical Pen. Anal Chem 2020; 92:15997-16004. [PMID: 33259187 PMCID: PMC7745201 DOI: 10.1021/acs.analchem.0c03530] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We present a new electrochemical system that combines paper-based sensing and ion-transfer voltammetry, bringing the latter a step closer toward point-of-care applications. Studies at the interface between two immiscible electrolyte solutions (ITIES) are often performed to detect redox-inactive species; unfortunately, due to the inherent instability of the interface, it is rather poorly explored outside specialized laboratories. Here, we address this limitation by combining a pen-like device containing the gelled organic phase with a paper-supported aqueous phase. This combination makes the system more user-friendly, potentially low-cost, and easy to assemble. We show the applicability of the new cell to analyze both simple and ionophore-facilitated transfer of ions and proteins, preconcentration of species, and analysis of mixtures through combination with paper chromatography. The native ion content of the paper also enabled measurements without added electrolytes. Those studies could broaden the scope for the application of the label-free electrochemical detection of nonredox-active species at points-of-need.
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Affiliation(s)
- Marta Podrażka
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Emilia Witkowska Nery
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Terence G Henares
- Curtin Institute for Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia
| | | | - Damien W M Arrigan
- Curtin Institute for Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia
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5
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Suárez-Herrera MF, Scanlon MD. Quantitative Analysis of Redox-Inactive Ions by AC Voltammetry at a Polarized Interface between Two Immiscible Electrolyte Solutions. Anal Chem 2020; 92:10521-10530. [PMID: 32608226 DOI: 10.1021/acs.analchem.0c01340] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The interface between two immiscible electrolyte solutions (ITIES) is ideally suited to detect redox-inactive ions by their ion transfer. Such electroanalysis, based on the Nernst-Donnan equation, has been predominantly performed using amperometry, cyclic voltammetry, or differential pulse voltammetry. Here, we introduce a new electroanalytical method based on alternating-current (AC) voltammetry with inherent advantages over traditional approaches such as avoidance of positive feedback iR compensation, a major issue for liquid|liquid electrochemical cells containing resistive organic media and interfacial areas in the cm2 and mm2 range. A theoretical background outlining the generation of the analytical signal is provided and based on extracting the component that depends on the Warburg impedance from the total impedance. The quantitative detection of a series of model redox-inactive tetraalkylammonium cations is demonstrated, with evidence provided of the transient adsorption of these cations at the interface during the course of ion transfer. Since ion transfer is diffusion-limited, by changing the voltage excitation frequency during AC voltammetry, the intensity of the Faradaic response can be enhanced at low frequencies (1 Hz) or made to disappear completely at higher frequencies (99 Hz). The latter produces an AC voltammogram equivalent to a "blank" measurement in the absence of analyte and is ideal for background subtraction. Therefore, major opportunities exist for the sensitive detection of ionic analyte when a "blank" measurement in the absence of analyte is impossible. This approach is particularly useful to deconvolute signals related to reversible electrochemical reactions from those due to irreversible processes, which do not give AC signals.
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Affiliation(s)
- Marco F Suárez-Herrera
- Departamento De Química, Facultad De Ciencias, Universidad Nacional De Colombia, Cra 30 # 45-03, Edificio 451, Bogotá, Colombia
| | - Micheál D Scanlon
- The Bernal Institute and Department of Chemical Sciences, School of Natural Sciences, University of Limerick (UL), Limerick V94 T9PX, Ireland
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6
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Poltorak L, Eggink I, Hoitink M, Sudhölter EJR, de Puit M. Electrified Soft Interface as a Selective Sensor for Cocaine Detection in Street Samples. Anal Chem 2018; 90:7428-7433. [PMID: 29781600 PMCID: PMC6011179 DOI: 10.1021/acs.analchem.8b00916] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
![]()
A straightforward,
direct, and selective method is presented for
electrochemical cocaine identification in street samples. The sensing
mechanism is based on a simple ion transfer reaction across the polarized
liquid–liquid interface. The interfacial behavior of a number
of cutting agents is also reported. Interfacial miniaturization has
led to improved electroanalytical properties of the liquid–liquid
interface based sensor as compared with the macroscopic analogue.
The reported method holds great potential to replace colorimetric
tests with poor selectivity for on-site street sample analysis.
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Affiliation(s)
- Lukasz Poltorak
- Delft University of Technology , Department of Chemical Engineering , Van der Maasweg 9 , 2629 HZ Delft , The Netherlands
| | | | - Marnix Hoitink
- Delft University of Technology , Department of Chemical Engineering , Van der Maasweg 9 , 2629 HZ Delft , The Netherlands
| | - Ernst J R Sudhölter
- Delft University of Technology , Department of Chemical Engineering , Van der Maasweg 9 , 2629 HZ Delft , The Netherlands
| | - Marcel de Puit
- Delft University of Technology , Department of Chemical Engineering , Van der Maasweg 9 , 2629 HZ Delft , The Netherlands.,Netherlands Forensic Institute, Forensic Biometric Traces , Laan van Ypenburg 6 , 2497 GB The Hague , The Netherlands
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7
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Xie L, Huang X, Su B. Portable Sensor for the Detection of Choline and Its Derivatives Based on Silica Isoporous Membrane and Gellified Nanointerfaces. ACS Sens 2017; 2:803-809. [PMID: 28723110 DOI: 10.1021/acssensors.7b00166] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A portable amperometric ion sensor was fabricated by integrating silica isoporous membrane (SIM) and organogel composed of polyvinyl chloride and 1,2-dichloroethane (PVC-DCE) on a 3D-printed polymer chip. The detection of ionic species in aqueous samples could be accomplished by adding a microliter of sample droplet to the sensor and by identifying the ion-transfer potential and current magnitude at the water/organogel interface array templated by SIM. Thanks to the ultrasmall channel size (2-3 nm in diameter), high channel density (4 × 108 μm-2), and ultrathin thickness (80 nm) of SIM, the ensemble of nanoscopic water/organogel (nano-W/Gel) interface array behaved like a microinterface with two back-to-back hemispherical mass diffusion zones. So, the heterogeneous ion-transfer across the nano-W/Gel interface array generated a steady-state sigmoidal current wave. The detection of choline (Ch) and its derivatives, including acetylcholine (ACh), benzoylcholine (BCh), and atropine (AP), in aqueous samples was examined with this portable sensor. Using differential pulse stripping voltammetry (DPSV), the quantification of these analytes was achieved with a limit of detection (LOD) down to 1 μM. Moreover, the portable ion sensor was insensitive to various potential interferents that might coexist in vivo, owing to size-/charge-based selectivity and antifouling capacity of SIM. With this priority, the portable ion sensor was able to quantitatively determine Ch and its derivatives in diluted urine and blood samples. The LODs for Ch, ACh, AP, and BCh in urine were 1.12, 1.30, 1.08, and 0.99 μM, and those for blood samples were 3.61, 3.38, 2.32, and 1.81 μM, respectively.
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Affiliation(s)
- Lisiqi Xie
- Institute of Analytical Chemistry,
Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Xiao Huang
- Institute of Analytical Chemistry,
Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Bin Su
- Institute of Analytical Chemistry,
Department of Chemistry, Zhejiang University, Hangzhou 310058, China
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8
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Alvarez de Eulate E, O'Sullivan S, Arrigan DWM. Electrochemically Induced Formation of Cytochrome c
Oligomers at Soft Interfaces. ChemElectroChem 2017. [DOI: 10.1002/celc.201600851] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Eva Alvarez de Eulate
- Nanochemistry Research Institute & Department of Chemistry; Curtin University; GPO Box U1987 Perth Western Australia, Australia 6845
| | - Shane O'Sullivan
- Nanochemistry Research Institute & Department of Chemistry; Curtin University; GPO Box U1987 Perth Western Australia, Australia 6845
| | - Damien W. M. Arrigan
- Nanochemistry Research Institute & Department of Chemistry; Curtin University; GPO Box U1987 Perth Western Australia, Australia 6845
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9
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Xie L, Huang X, Lin X, Su B. Nanoscopic liquid/liquid interface arrays supported by silica isoporous membranes: Trans-membrane resistance and ion transfer reactions. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2016.12.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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10
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Huang X, Xie L, Lin X, Su B. Detection of Metoprolol in Human Biofluids and Pharmaceuticals via Ion-Transfer Voltammetry at the Nanoscopic Liquid/Liquid Interface Array. Anal Chem 2016; 89:945-951. [PMID: 27958719 DOI: 10.1021/acs.analchem.6b04099] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Metoprolol (MTP) is one of the most widely used antihypertensive drugs yet banned to use in sport competition. Therefore, there has been an increasing demand for developing simple, rapid, and sensitive methods suited to the identification and quantification of MTP in human biofluids. In this work, ultrathin silica nanochannel membrane (SNM) with perforated channels was employed to support nanoscale liquid/liquid interface (nano-ITIES) array for investigation of the ion-transfer voltammetric behavior of MTP and for its detection in multiple human biofluids and pharmaceutical formulation. Several potential interfering substances, including small molecules, d-glucose, urea, ascorbic acid, glycine, magnesium chloride, sodium sulfate and large molecules, bovine serum albumin (BSA), were chosen as models of biological interferences to examine their influence on the ion-transfer current signal of MTP. The results confirmed that the steady-state current wave barely changed in the presence of small molecules. Although BSA displayed an apparent blockade on the transfer of MTP, the accurate determination of MTP in multiple human biofluids (i.e., urine, serum and whole blood) and pharmaceutical formulation were still feasible, thanks to the molecular sieving and antifouling abilities of SNM. A limit of detection (LOD) within the physiological level of MTP during therapy could be achieved for all cases, i.e., 0.5 and 1.1 μM for 100 times diluted urine and serum, respectively, and 2.2 μM for 1000 times diluted blood samples. These results demonstrated that the nano-ITIES array behaved as a simplified and integrated detection platform for ionizable drug analysis in complex media.
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Affiliation(s)
- Xiao Huang
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University , Hangzhou 310058, China
| | - Lisiqi Xie
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University , Hangzhou 310058, China
| | - Xingyu Lin
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University , Hangzhou 310058, China
| | - Bin Su
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University , Hangzhou 310058, China
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11
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Arrigan DWM, Liu Y. Electroanalytical Ventures at Nanoscale Interfaces Between Immiscible Liquids. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2016; 9:145-161. [PMID: 27049634 DOI: 10.1146/annurev-anchem-071015-041415] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Ion transfer at the interface between immiscible electrolyte solutions offers many benefits to analytical chemistry, including the ability to detect nonredox active ionized analytes, to detect ions whose redox electrochemistry is accompanied by complications, and to separate ions based on electrocontrolled partition. Nanoscale miniaturization of such interfaces brings the benefits of enhanced mass transport, which in turn leads to improved analytical performance in areas such as sensitivity and limits of detection. This review discusses the development of such nanoscale interfaces between immiscible liquids and examines the analytical advances that have been made to date, including prospects for trace detection of ion concentrations.
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Affiliation(s)
- Damien W M Arrigan
- Nanochemistry Research Institute and Department of Chemistry, Curtin University, Perth, Western Australia 6845, Australia;
| | - Yang Liu
- Nanochemistry Research Institute and Department of Chemistry, Curtin University, Perth, Western Australia 6845, Australia;
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12
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Huang X, Xie L, Lin X, Su B. Permselective Ion Transport Across the Nanoscopic Liquid/Liquid Interface Array. Anal Chem 2016; 88:6563-9. [DOI: 10.1021/acs.analchem.6b01383] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Xiao Huang
- Institute of Analytical
Chemistry,
Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Lisiqi Xie
- Institute of Analytical
Chemistry,
Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Xingyu Lin
- Institute of Analytical
Chemistry,
Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Bin Su
- Institute of Analytical
Chemistry,
Department of Chemistry, Zhejiang University, Hangzhou 310058, China
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13
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14
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Lee HJ, Arrigan DWM, Karim MN, Kim H. Amperometric Ion Sensing Approaches at Liquid/Liquid Interfaces for Inorganic, Organic and Biological Ions. ELECTROCHEMICAL STRATEGIES IN DETECTION SCIENCE 2015. [DOI: 10.1039/9781782622529-00296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Electrochemistry at the interface between two immiscible electrolyte solutions (ITIES) has become an invaluable tool for the selective and sensitive detection of cationic and anionic species, including charged drug molecules and proteins. In addition, neutral molecules can also be detected at the ITIES via enzymatic reactions. This chapter highlights recent developments towards creating a wide spectrum of sensing platforms involving ion transfer across the ITIES. As well as outlining the basic principles needed for performing these sensing applications, the development of ITIES-based detection strategies for inorganic, organic, and biological ions is discussed.
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Affiliation(s)
- Hye Jin Lee
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University 80 Daehakro, Buk-gu Daegu-city 702-701 Republic of Korea
| | - Damien W. M. Arrigan
- Nanochemistry Research Institute, Department of Chemistry, Curtin University GPO Box U1987 Perth, Western Australia 6845 Australia
| | - Md. Nurul Karim
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University 80 Daehakro, Buk-gu Daegu-city 702-701 Republic of Korea
| | - Hyerim Kim
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University 80 Daehakro, Buk-gu Daegu-city 702-701 Republic of Korea
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15
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Poltorak L, Morakchi K, Herzog G, Walcarius A. Electrochemical characterization of liquid-liquid micro-interfaces modified with mesoporous silica. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.01.129] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Liu Y, Sairi M, Neusser G, Kranz C, Arrigan DWM. Achievement of Diffusional Independence at Nanoscale Liquid–Liquid Interfaces within Arrays. Anal Chem 2015; 87:5486-90. [DOI: 10.1021/acs.analchem.5b01162] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yang Liu
- Nanochemistry
Research Institute, Department of Chemistry, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia
| | - Masniza Sairi
- Nanochemistry
Research Institute, Department of Chemistry, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia
- Mechanisation
and Automation Research Centre, Malaysian Agricultural Research and Development Institute (MARDI), P.O. Box 12301, 50774 Kuala Lumpur, Malaysia
| | - Gregor Neusser
- Institute
of Analytical and Bioanalytical Chemistry, University of Ulm, Albert-Einstein-Allee
11, 89081 Ulm, Germany
| | - Christine Kranz
- Institute
of Analytical and Bioanalytical Chemistry, University of Ulm, Albert-Einstein-Allee
11, 89081 Ulm, Germany
| | - Damien W. M. Arrigan
- Nanochemistry
Research Institute, Department of Chemistry, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia
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17
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Liu Y, Strutwolf J, Arrigan DWM. Ion-Transfer Voltammetric Behavior of Propranolol at Nanoscale Liquid–Liquid Interface Arrays. Anal Chem 2015; 87:4487-94. [DOI: 10.1021/acs.analchem.5b00461] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yang Liu
- Nanochemistry
Research Institute, Department of Chemistry, Curtin University, GPO
Box U1987, Perth, Western
Australia 6845, Australia
| | - Jörg Strutwolf
- Institute
of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Damien W. M. Arrigan
- Nanochemistry
Research Institute, Department of Chemistry, Curtin University, GPO
Box U1987, Perth, Western
Australia 6845, Australia
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18
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Herzog G. Recent developments in electrochemistry at the interface between two immiscible electrolyte solutions for ion sensing. Analyst 2015; 140:3888-96. [DOI: 10.1039/c5an00601e] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The most recent developments on electrochemical sensing of ions at the liquid–liquid interface are reviewed here.
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Affiliation(s)
- Grégoire Herzog
- Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME)
- UMR 7564
- CNRS – Université de Lorraine
- Villers-lès-Nancy
- France
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19
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Sairi M, Chen-Tan N, Neusser G, Kranz C, Arrigan DWM. Electrochemical Characterisation of Nanoscale Liquid|Liquid Interfaces Located at Focused Ion Beam-Milled Silicon Nitride Membranes. ChemElectroChem 2014. [DOI: 10.1002/celc.201402252] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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20
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Mastouri A, Peulon S, Farcage D, Bellakhal N, Chaussé A. Perfect additivity of microinterface arrays for liquid-liquid measurements: Application to cadmium ions quantification. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.12.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Arrigan D, Herzog G, Scanlon M, Strutwolf J. Bioanalytical Applications of Electrochemistry at Liquid-Liquid Microinterfaces. ELECTROANALYTICAL CHEMISTRY: A SERIES OF ADVANCES 2013. [DOI: 10.1201/b15576-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Molina Á, Serna C, Ortuño JA, Torralba E. Studies of ion transfer across liquid membranes by electrochemical techniques. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2pc90005j] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Rimboud M, Hart RD, Becker T, Arrigan DWM. Electrochemical behaviour and voltammetric sensitivity at arrays of nanoscale interfaces between immiscible liquids. Analyst 2011; 136:4674-81. [DOI: 10.1039/c1an15509a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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