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Zhao Y, Chen Q, Liu Y, Jiang B, Yuan R, Xiang Y. A sensitive tobramycin electrochemical aptasensor based on multiple signal amplification cascades. Bioelectrochemistry 2024; 160:108797. [PMID: 39154628 DOI: 10.1016/j.bioelechem.2024.108797] [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: 06/01/2024] [Revised: 07/27/2024] [Accepted: 08/13/2024] [Indexed: 08/20/2024]
Abstract
The residue of tobramycin, a broad spectrum antibiotic commonly used in animal husbandry, has evitable impact on human health, which may cause kidney damage, respiratory paralysis, neuromuscular blockade and cross-allergy in humans. Sensitive monitoring of tobramycin in animal-derived food products is therefore of great importance. Herein, a new aptamer electrochemical biosensor for sensing tobramycin with high sensitivity is demonstrated via exonuclease III (Exo III) and metal ion-dependent DNAzyme recycling and hybridization chain reaction (HCR) signal amplification cascades. Tobramycin analyte binds aptamer-containing hairpin probe to switch its conformation to expose the toehold sequence, which triggers Exo III-based catalytic digestion of the secondary hairpin to release many DNAzyme strands. The substrate hairpins immobilized on the Au electrode (AuE) are then cyclically cleaved by the DNAzymes to form ssDNAs, which further initiate HCR formation of lots of long methylene blue (MB)-tagged dsDNA polymers on the AuE. Subsequently electro-oxidation of these MB labels thus exhibit highly enhanced currents for sensing tobramycin within the 5-1000 nM concentration range with an impressive detection limit of 3.51 nM. Furthermore, this strategy has high selectivity for detecting tobramycin in milk and shows promising potential for detect other antibiotics for food safety monitoring.
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Affiliation(s)
- Yi Zhao
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Qirong Chen
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yujie Liu
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, PR China
| | - Bingying Jiang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, PR China.
| | - Ruo Yuan
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yun Xiang
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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2
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Salem H, Omar MA, Mazen DZ, Nour El-Deen DAM. Simultaneous Determination of Ceftazidime in Three Different Pharmaceutical Preparations Combined with Either Tazobactam, Tobramycin or Sulbactam by HPTLC-Spectrodensitometric Method. J Chromatogr Sci 2023; 62:35-43. [PMID: 37083048 DOI: 10.1093/chromsci/bmad031] [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: 04/04/2022] [Revised: 12/30/2022] [Accepted: 03/16/2023] [Indexed: 04/22/2023]
Abstract
A new, simple hight performance thin layer chromatography (HPTLC)-Spectrodensitometric strategy was created and approved for the synchronous estimation of four antibacterial specialists: ceftazidime (CEF), tazobactam (TAZ), tobramycin (TOB) and sulbactam (SUL). The four compounds were separated on TLC aluminum plates covered with silica gel 60 F254, using chloroform-acetonitrile-methanol-ammonia (4:1:0.5:0.15, v/v/v/v) as a mobile phase at 254 nm. Linear correlation was obeyed over the concentration ranges of 12.0-72.0, 2.0-12.0, 3.0-18.0 and 10.0-50.0 μg mL-1 for CEF, TAZ, TOB and SUL, respectively. The proposed approach is efficient, repeatable and convenient as a flexible method for the quality control of diverse combinations of these pharmaceuticals in various pharmaceutical preparations, with high percent recoveries that are highly consistent with labeled data. When the findings of the proposed technique were compared to those of the comparison methods, there were no critical contrasts in terms of precision and accuracy.
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Affiliation(s)
- Hesham Salem
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Deraya University, New Minia 61511, Egypt
| | - Mahmoud A Omar
- Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
- Department of Pharmacognosy and Pharmaceutical Chemistry, College of Pharmacy, Taibah University, Medinah 41477, Saudi Arabia
| | - Dina Z Mazen
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Deraya University, New Minia 61511, Egypt
| | - Deena A M Nour El-Deen
- Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
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3
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Tůma P, Jaček M, Sommerová B, Dlouhý P, Jarošíková R, Husáková J, Wosková V, Fejfarová V. Monitoring of amoxicilline and ceftazidime in the microdialysate of diabetic foot and serum by capillary electrophoresis with contactless conductivity detection. Electrophoresis 2022; 43:1129-1139. [PMID: 35072285 DOI: 10.1002/elps.202100366] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/17/2021] [Accepted: 12/23/2021] [Indexed: 11/11/2022]
Abstract
Determination of the broad-spectrum antibiotics amoxicilline (AMX) and ceftazidime (CTZ) in blood serum and microdialysates of the subcutaneous tissue of the lower limbs is performed using CE with contactless conductivity detection (C4 D). Baseline separation of AMX is achieved in 0.5 M acetic acid as the background electrolyte and separation of CTZ in 3.2 M acetic acid with addition of 13% v/v methanol. The CE-C4 D determination is performed in a 25 µm capillary with suppression of the EOF using INST-coating on an effective length of 18 cm and the attained migration time is 4.2 min for AMX and 4.4 min for CTZ. The analysis was performed using 20 µl of serum and 15 µl of microdialysate, treated by the addition of acetonitrile in a ratio of 1/3 v/v and the sample is injected into the capillary using the large volume sample stacking technique. The LOQ attained in the microdialysate is 148 ng/ml for AMX and 339 ng/ml for CTZ, and in serum 143 ng/ml for AMX and 318 ng/ml for CTZ. The CE-C4 D method is employed for monitoring the passage of AMX and CTZ from the blood circulatory system into the subcutaneous tissue at the sites of diabetic ulceration in patients suffering from diabetic foot syndrome and also for measuring the pharmacokinetics following intravenous application of bolus antibiotic doses.
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Affiliation(s)
- Petr Tůma
- Department of Hygiene, Third Faculty of Medicine, Charles University, Prague 10, Czech Republic
| | - Martin Jaček
- Department of Hygiene, Third Faculty of Medicine, Charles University, Prague 10, Czech Republic
| | - Blanka Sommerová
- Department of Hygiene, Third Faculty of Medicine, Charles University, Prague 10, Czech Republic
| | - Pavel Dlouhý
- Department of Hygiene, Third Faculty of Medicine, Charles University, Prague 10, Czech Republic
| | - Radka Jarošíková
- Diabetes Centre, Institute for Clinical and Experimental Medicine, Prague 4, Czech Republic
| | - Jitka Husáková
- Diabetes Centre, Institute for Clinical and Experimental Medicine, Prague 4, Czech Republic
| | - Veronika Wosková
- Diabetes Centre, Institute for Clinical and Experimental Medicine, Prague 4, Czech Republic
| | - Vladimíra Fejfarová
- Diabetes Centre, Institute for Clinical and Experimental Medicine, Prague 4, Czech Republic
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4
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Chantipmanee N, Hauser PC. Determination of tobramycin in eye drops with an open-source hardware ion mobility spectrometer. Anal Bioanal Chem 2022; 414:4059-4066. [PMID: 35381854 PMCID: PMC9124657 DOI: 10.1007/s00216-022-04050-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 11/28/2022]
Abstract
The analysis of tobramycin was demonstrated successfully as an example for electrospray ionization on an open-source hardware ion mobility spectrometer. This instrument was assembled inexpensively in-house, and required only very few purpose-made components. The quantitative determination of tobramycin required 20 s for a reading. The calibration curve for the range from 50 to 200 μM was found to be linear with a correlation coefficient of r = 0.9994. A good reproducibility was obtained (3% relative standard deviation) and the limit of detection was determined as 8 μM. As the concentration of the active ingredient in the eye drops (ophthalmic solutions) is too high for the sensitivity of the instrument, the samples had to be diluted appropriately.
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Affiliation(s)
- Nattapong Chantipmanee
- Department of Chemistry, University of Basel, Klingelbergstrasse 80, 4056, Basel, Switzerland
| | - Peter C Hauser
- Department of Chemistry, University of Basel, Klingelbergstrasse 80, 4056, Basel, Switzerland.
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Chen X, Liu D, Wu H, Ji J, Xue Z, Feng S. Sensitive determination of tobramycin using homocystine capped gold nanoclusters as probe by second-order scattering. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 270:120840. [PMID: 35007909 DOI: 10.1016/j.saa.2021.120840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 12/28/2021] [Accepted: 12/29/2021] [Indexed: 06/14/2023]
Abstract
A novel photoluminescent Hcy-AuNCs has been developed through one-pot reduction method, to establish a tobramycin sensing by second-order scattering (SOS). Hcy-AuNCs could spontaneously assemble to small-scaled aggregation, resulting in remarkable intensity enhancement of scattered luminescence signals. The luminescence of Hcy-AuNCs could be clearly observed under ultraviolet lamp, when excited at 365 nm, a significant luminescent intensity at 741 nm was monitored in SOS spectra. The introduction of AuNPs would cause large-scaled aggregation of Hcy-AuNCs that was rapidly settled in the solution, resulting in the decrease of SOS intensity. Besides, the non-radiative energy transfer between AuNPs and Hcy-AuNCs would also reduce the luminescent intensity. However, the addition of tobramycin would cause the aggregation of AuNPs due to the electrostatic and covalent bonding between AuNPs and tobramycin, thus eliminating the interference of AuNPs. The luminescence of Hcy-AuNCs reappeared, exhibiting an optical response toward tobramycin. The good linearity was obtained in a wide range from 4 nM to 300 nM with a low detection limit of 0.27 nM. The selectivity was acceptable toward different types of antibiotics. Finally, the proposed method was successfully applied to the widely used tobramycin eye drops.
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Affiliation(s)
- Xinyue Chen
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Dan Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Huifang Wu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Jiahui Ji
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Zhiyuan Xue
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Shilan Feng
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China.
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Zhou J, Xu Z. Simultaneous separation of 12 different classes of antibiotics under the condition of complete protonation by capillary electrophoresis-coupled contactless conductivity detection. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:174-179. [PMID: 34935007 DOI: 10.1039/d1ay01838h] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A novel capillary electrophoresis - capacitively coupled contactless conductivity detection (CE-C4D) method for the separation of 12 antibiotics, including four types of aminoglycosides, three types of fluoroquinolones, two types of tetracyclines, and three types of macrolides, was developed. Half of these antibiotics were not determined by ultraviolet (UV) because of their lack of UV-absorbing groups. Formic acid (FA) (pH 2.50) with low conductivity was employed as the background electrolyte (BGE) in comparison with three BGE systems (i.e., HAc, HCl and H3PO4), which not only allowed complete protonation and electrophoresis separation but provided more cost-effectiveness and shorter analysis time. Under these conditions, a UV detector was employed as an additional detection mode to evaluate the qualitative analysis of 6 antibiotics possessing UV absorbing groups. Moreover, it was found that the sensitivities of the C4D and UV detectors were similar. Albeit a slightly reduced sensitivity of C4D in the analysis of norfloxacin, enrofloxacin and tylosin compared to UV, enough points were achieved to detect all analytes by C4D. The repeatability with respect to peak areas and migration times was better than 4.69% and 2.48% (n = 5), respectively. Mixed liquid pharmaceutical formulations of tobramycin eye drops having non-UV absorbing groups and ofloxacin eye drops possessing UV absorbing groups have been separated and detected in a single run by this technique. The studied recoveries of the two were 100% and 103%, respectively.
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Affiliation(s)
- Jianjing Zhou
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China.
| | - Zhongqi Xu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China.
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Le TB, Hauser PC, Pham TNM, Kieu TLP, Le TPQ, Hoang QA, Le DC, Nguyen TAH, Mai TD. Low-cost and versatile analytical tool with purpose-made capillary electrophoresis coupled to contactless conductivity detection: Application to antibiotics quality control in Vietnam. Electrophoresis 2020; 41:1980-1990. [PMID: 32856726 DOI: 10.1002/elps.202000163] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/24/2020] [Accepted: 08/25/2020] [Indexed: 12/12/2022]
Abstract
In this study, the development of our purpose-made capacitively coupled contactless conductivity detection (C4 D) for CE is reported. These systems have been employed as a simple, versatile, and cost-effective analytical tool. CE-C4 D devices, whose principle is based on the control of the ion movements under an electrical field, can be constructed even with a modest financial budget and limited infrastructure. A featured application was developed for quality control of antimicrobial drugs using CE-C4 D, with most recent work on determination of aminoglycoside and glycopeptide antibiotics being communicated. For aminoglycosides, the development of CE-C4 D methods was adapted to two categories. The first one includes drugs (liquid or powder form) for intravenous injection, containing either amikacin, streptomycin, kanamycin A, or kanamycin B. The second one covers drugs for eye drops (liquid or ointment form), containing either neomycin, tobramycin, or polymyxin. The CE-C4 D method development was also made for determination of some popular glycopeptide antibiotics in Vietnam, including vancomycin and teicoplanin. The best detection limit achieved using the developed CE-C4 D methods was 0.5 mg/L. Good agreement between results from CE-C4 D and the confirmation method (HPLC- Photometric Diode Array ) was achieved, with their result deviations less than 8% and 13% for aminoglycoside and glycopeptide antibiotics, respectively.
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Affiliation(s)
- Thai Binh Le
- Department of Analytical Chemistry, Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, Hanoi, Vietnam
| | - Peter C Hauser
- Department of Chemistry, University of Basel, Basel, Switzerland
| | - Thi Ngoc Mai Pham
- Department of Analytical Chemistry, Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, Hanoi, Vietnam
| | - Thi Lan Phuong Kieu
- Department of Analytical Chemistry, Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, Hanoi, Vietnam
| | - Thi Phuong Quynh Le
- Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Quoc Anh Hoang
- Department of Analytical Chemistry, Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, Hanoi, Vietnam
| | - Dinh Chi Le
- Department of Analytical Chemistry and Toxicology, Hanoi University of Pharmacy, Hanoi, Vietnam
| | - Thi Anh Huong Nguyen
- Department of Analytical Chemistry, Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, Hanoi, Vietnam
| | - Thanh Duc Mai
- CNRS, Institut Galien Paris-Saclay, Université Paris-Saclay, Châtenay-Malabry, France
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8
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Multi-cycle signal-amplified colorimetric detection of tobramycin based on dual-strand displacement and three-way DNA junction. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104823] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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9
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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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10
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Bol’shakov DS, Amelin VG, Nikeshina TB. Determination of antibiotics in drugs and biological fluids using capillary electrophoresis. JOURNAL OF ANALYTICAL CHEMISTRY 2016. [DOI: 10.1134/s1061934816010020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Exploring the possibilities of capacitively coupled contactless conductivity detection in combination with liquid chromatography for the analysis of polar compounds using aminoglycosides as test case. J Pharm Biomed Anal 2015; 112:155-68. [DOI: 10.1016/j.jpba.2014.12.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 12/01/2014] [Accepted: 12/05/2014] [Indexed: 11/24/2022]
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12
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Development of molecular imprinted nanosensor for determination of tobramycin in pharmaceuticals and foods. Talanta 2014; 120:318-24. [DOI: 10.1016/j.talanta.2013.10.064] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 10/28/2013] [Accepted: 10/31/2013] [Indexed: 11/23/2022]
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13
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Alhusban AA, Gaudry AJ, Breadmore MC, Gueven N, Guijt RM. On-line sequential injection-capillary electrophoresis for near-real-time monitoring of extracellular lactate in cell culture flasks. J Chromatogr A 2014; 1323:157-62. [DOI: 10.1016/j.chroma.2013.11.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 10/31/2013] [Accepted: 11/01/2013] [Indexed: 10/26/2022]
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14
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Molecular imprinted polypyrrole modified glassy carbon electrode for the determination of tobramycin. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.08.132] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Manyanga V, Elkady E, Hoogmartens J, Adams E. Improved reversed phase liquid chromatographic method with pulsed electrochemical detection for tobramycin in bulk and pharmaceutical formulation. J Pharm Anal 2013; 3:161-167. [PMID: 29403811 PMCID: PMC5760981 DOI: 10.1016/j.jpha.2012.12.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Accepted: 12/27/2012] [Indexed: 11/24/2022] Open
Abstract
Tobramycin is one of the aminoglycoside antibiotics that lack a UV absorbing chromophore. However, the application of pulsed electrochemical detection (PED) has been used successfully for the analysis of this and similar antibiotics. This work describes an improved liquid chromatographic (LC) method combined with PED, which is able to separate much more impurities than before. Using a Discovery C-18 RP column (250 mm×4.6 mm i.d., 5 μm), isocratic elution was carried out with a mobile phase, containing sodium sulfate (35 g/L), sodium octanesulphonic acid (1 g/L), tetrahydrofuran (14 mL/L) and 0.2 M phosphate buffer pH 3.0 (50 mL/L). Using these experimental conditions, the limit of quantification (LOQ, S/N=10) was 5 ng. The linearity was examined in the range LOQ-60 μg/mL and the coefficient of determination was 0.998. The method also proved to be repeatable and the recovery was close to 100%. The influence of the different chromatographic parameters on the separation was investigated by means of an experimental design. The proposed method is useful in quality control of tobramycin drug substances and drug products.
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Affiliation(s)
- Vicky Manyanga
- Laboratory for Pharmaceutical Analysis, Faculteit Farmaceutische Wetenschappen, KU Leuven, O&N2, PB 923, Herestraat 49, B-3000 Leuven, Belgium
| | - Ehab Elkady
- Laboratory for Pharmaceutical Analysis, Faculteit Farmaceutische Wetenschappen, KU Leuven, O&N2, PB 923, Herestraat 49, B-3000 Leuven, Belgium
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., Cairo 11562, Egypt
| | - Jos Hoogmartens
- Laboratory for Pharmaceutical Analysis, Faculteit Farmaceutische Wetenschappen, KU Leuven, O&N2, PB 923, Herestraat 49, B-3000 Leuven, Belgium
| | - Erwin Adams
- Laboratory for Pharmaceutical Analysis, Faculteit Farmaceutische Wetenschappen, KU Leuven, O&N2, PB 923, Herestraat 49, B-3000 Leuven, Belgium
- Corresponding author. Tel.: +3216323444; fax: +3216323448.
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Determination of free and total valproic acid in human plasma by capillary electrophoresis with contactless conductivity detection. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 907:74-8. [DOI: 10.1016/j.jchromb.2012.08.037] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Revised: 08/27/2012] [Accepted: 08/29/2012] [Indexed: 11/21/2022]
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17
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El-Attug MN, Adams E, Van Schepdael A. Development and validation of a capillary electrophoresis method with capacitively coupled contactless conductivity detection (CE-C4D) for the analysis of amikacin and its related substances. Electrophoresis 2012; 33:2777-82. [DOI: 10.1002/elps.201100688] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Erwin Adams
- Laboratory for Pharmaceutical Analysis; Faculteit Farmaceutische Wetenschappen; Katholieke Universiteit Leuven; Leuven; Belgium
| | - Ann Van Schepdael
- Laboratory for Pharmaceutical Analysis; Faculteit Farmaceutische Wetenschappen; Katholieke Universiteit Leuven; Leuven; Belgium
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18
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See HH, Schmidt-Marzinkowski J, Pormsila W, Morand R, Krähenbühl S, Hauser PC. Determination of creatine and phosphocreatine in muscle biopsy samples by capillary electrophoresis with contactless conductivity detection. Anal Chim Acta 2012; 727:78-82. [DOI: 10.1016/j.aca.2012.03.055] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 03/29/2012] [Accepted: 03/30/2012] [Indexed: 01/13/2023]
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19
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Optimization of capillary electrophoresis method with contactless conductivity detection for the analysis of tobramycin and its related substances. J Pharm Biomed Anal 2012; 58:49-57. [DOI: 10.1016/j.jpba.2011.09.032] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Revised: 09/27/2011] [Accepted: 09/29/2011] [Indexed: 11/19/2022]
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20
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El-Attug MN, Adams E, Hoogmartens J, Van Schepdael A. Capacitively coupled contactless conductivity detection as an alternative detection mode in CE for the analysis of kanamycin sulphate and its related substances. J Sep Sci 2011; 34:2448-54. [DOI: 10.1002/jssc.201100267] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 06/06/2011] [Accepted: 06/11/2011] [Indexed: 11/08/2022]
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21
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Lau HF, Quek NM, Law WS, Zhao JH, Hauser PC, Li SFY. Optimization of separation of heavy metals by capillary electrophoresis with contactless conductivity detection. Electrophoresis 2011; 32:1190-4. [DOI: 10.1002/elps.201000603] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Revised: 01/09/2011] [Accepted: 01/09/2011] [Indexed: 11/10/2022]
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22
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Pormsila W, Morand R, Krähenbühl S, Hauser PC. Capillary electrophoresis with contactless conductivity detection for the determination of carnitine and acylcarnitines in clinical samples. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:921-6. [DOI: 10.1016/j.jchromb.2011.02.046] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Revised: 12/21/2010] [Accepted: 02/25/2011] [Indexed: 02/07/2023]
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23
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Pormsila W, Morand R, Krähenbühl S, Hauser PC. Quantification of plasma lactate concentrations using capillary electrophoresis with contactless conductivity detection. Electrophoresis 2011; 32:884-9. [DOI: 10.1002/elps.201000420] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Revised: 09/22/2010] [Accepted: 09/22/2010] [Indexed: 11/11/2022]
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24
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Impedimetric aptasensor for tobramycin detection in human serum. Biosens Bioelectron 2010; 26:2354-60. [PMID: 21051217 DOI: 10.1016/j.bios.2010.10.011] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Revised: 09/15/2010] [Accepted: 10/06/2010] [Indexed: 11/24/2022]
Abstract
An RNA aptamer is proposed as a recognition element for the detection of tobramycin in human serum. A displacement assay was developed using faradaic-electrochemical impedance spectroscopy (F-EIS) as a detection technique. Two modified aptamers, a partially (ATA) and a fully O-methylated aptamer (FATA) were evaluated and compared. The affinity constant, K(D), for both aptamers was estimated by F-EIS resulting virtually identical within the experimental error. The selectivity towards other aminoglycosides was also studied. The analytical characteristics were evaluated in aqueous solution using both aptamers and FATA was selected for human serum experiments. Using a 1:0.5 dilution of the serum, a linear range between 3 μM and 72.1 μM was obtained, which included the therapeutic range of the antibiotic.
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25
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Recent advances of capillary electrophoresis in pharmaceutical analysis. Anal Bioanal Chem 2010; 398:29-52. [DOI: 10.1007/s00216-010-3741-5] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2010] [Revised: 04/08/2010] [Accepted: 04/09/2010] [Indexed: 01/16/2023]
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26
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Abstract
Sample stacking techniques remain an important tool for enhancement of the selectivity and sensitivity of analyses in contemporary CZE. This contribution reviews new knowledge on this topic published since 2006. It is organized according to the operational principles used, which include concentration adjustment, application of a pH step, MEKC and sweeping, and transient ITP. Techniques combining several of these principles and comparative studies are also included.
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Affiliation(s)
- Zdena Malá
- Institute of Analytical Chemistry of the ASCR, Brno, Czech Republic
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27
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Xu L, Hauser PC, Lee HK. Determination of nerve agent degradation products by capillary electrophoresis using field-amplified sample stacking injection with the electroosmotic flow pump and contactless conductivity detection. J Chromatogr A 2009; 1216:5911-6. [DOI: 10.1016/j.chroma.2009.06.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2009] [Revised: 05/31/2009] [Accepted: 06/09/2009] [Indexed: 10/20/2022]
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28
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Pormsila W, Krähenbühl S, Hauser PC. Capillary electrophoresis with contactless conductivity detection for uric acid determination in biological fluids. Anal Chim Acta 2009; 636:224-8. [DOI: 10.1016/j.aca.2009.02.012] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2008] [Revised: 02/05/2009] [Accepted: 02/05/2009] [Indexed: 11/26/2022]
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29
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Sensitivity improvement by using contactless conductivity rather than indirect UV detection for the determination of enantiomeric purity of amines by CE. Electrophoresis 2009; 30:487-98. [DOI: 10.1002/elps.200800316] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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30
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Kubáň P, Hauser PC. Ten years of axial capacitively coupled contactless conductivity detection for CZE - a review. Electrophoresis 2009; 30:176-88. [DOI: 10.1002/elps.200800478] [Citation(s) in RCA: 181] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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31
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Determination of kanamycin A, amikacin and tobramycin residues in milk by capillary zone electrophoresis with post-column derivatization and laser-induced fluorescence detection. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:333-8. [DOI: 10.1016/j.jchromb.2008.12.011] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2008] [Revised: 09/22/2008] [Accepted: 12/04/2008] [Indexed: 11/20/2022]
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32
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Xu L, Hauser PC, Lee HK. Electro membrane isolation of nerve agent degradation products across a supported liquid membrane followed by capillary electrophoresis with contactless conductivity detection. J Chromatogr A 2008; 1214:17-22. [DOI: 10.1016/j.chroma.2008.10.058] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2008] [Revised: 10/10/2008] [Accepted: 10/15/2008] [Indexed: 10/21/2022]
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33
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Gong XY, Kubáň P, Scholer A, Hauser PC. Determination of γ-hydroxybutyric acid in clinical samples using capillary electrophoresis with contactless conductivity detection. J Chromatogr A 2008; 1213:100-4. [DOI: 10.1016/j.chroma.2008.10.015] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2008] [Revised: 10/06/2008] [Accepted: 10/07/2008] [Indexed: 11/16/2022]
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34
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Xu L, Gong XY, Lee HK, Hauser PC. Ion-pair liquid–liquid–liquid microextraction of nerve agent degradation products followed by capillary electrophoresis with contactless conductivity detection. J Chromatogr A 2008; 1205:158-62. [DOI: 10.1016/j.chroma.2008.08.005] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2008] [Revised: 07/25/2008] [Accepted: 08/01/2008] [Indexed: 11/28/2022]
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35
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Tůma P, Opekar F, Samcová E, Štulík K. A Comparison of the Properties of Contactless Conductivity and Diode-Array Photometric Detectors in Analyses of Low-Molecular, Biologically Active Substances by Capillary Electrophoresis in Acetic Acid Solutions. ELECTROANAL 2008. [DOI: 10.1002/elan.200704134] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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36
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Simpson SL, Quirino JP, Terabe S. On-line sample preconcentration in capillary electrophoresis. J Chromatogr A 2008; 1184:504-41. [DOI: 10.1016/j.chroma.2007.11.001] [Citation(s) in RCA: 269] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2007] [Revised: 10/30/2007] [Accepted: 11/01/2007] [Indexed: 02/06/2023]
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37
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A review of the recent achievements in capacitively coupled contactless conductivity detection. Anal Chim Acta 2008; 607:15-29. [DOI: 10.1016/j.aca.2007.11.045] [Citation(s) in RCA: 215] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2007] [Revised: 11/22/2007] [Accepted: 11/27/2007] [Indexed: 11/21/2022]
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38
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Castro-Puyana M, Crego AL, Marina ML. Recent advances in the analysis of antibiotics by CE and CEC. Electrophoresis 2008; 29:274-93. [DOI: 10.1002/elps.200700485] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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39
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Law WS, Zhao JH, Hauser PC, Yau Li SF. Capillary electrophoresis with capacitively coupled contactless conductivity detection for low molecular weight organic acids in different samples. J Sep Sci 2007; 30:3247-54. [DOI: 10.1002/jssc.200700306] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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40
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Schuchert-Shi A, Kubáň P, Hauser PC. Monitoring of enzymatic reactions using conventional and on-chip capillary electrophoresis with contactless conductivity detection. Electrophoresis 2007; 28:4690-6. [DOI: 10.1002/elps.200700332] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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41
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Tay ETT, Law WS, Sim SPC, Feng H, Zhao JH, Li SFY. Floating resistivity detector for microchip electrophoresis. Electrophoresis 2007; 28:4620-8. [DOI: 10.1002/elps.200700185] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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42
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Advances in amperometric and conductometric detection in capillary and chip-based electrophoresis. Mikrochim Acta 2007. [DOI: 10.1007/s00604-007-0802-3] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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43
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Du Y, Wang E. Capillary electrophoresis and microchip capillary electrophoresis with electrochemical and electrochemiluminescence detection. J Sep Sci 2007; 30:875-90. [PMID: 17536733 DOI: 10.1002/jssc.200600472] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Recent advances and key strategies in capillary electrophoresis and microchip CE with electrochemical detection (ECD) and electrochemiluminescence (ECL) detection are reviewed. This article consists of four main parts: CE-ECD; microchip CE-ECD; CE-ECL; and microchip CE-ECL. It is expected that ECD and ECL will become powerful tools for CE microchip systems and will lead to the creation of truly disposable devices. The focus is on papers published in the last two years (from 2005 to 2006).
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Affiliation(s)
- Yan Du
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Changchun, Jilin, PR China
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