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Wang X, Liao X, Zhang B, Zhang M, Mei L, Wang F, Chen S, Qiao X, Hong C. An electrochemical immunosensor for the detection of carcinoembryonic antigen based on Au/g-C 3N 4 NSs-modified electrode and CuCo/CNC as signal tag. Mikrochim Acta 2021; 188:408. [PMID: 34738160 DOI: 10.1007/s00604-021-05013-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 08/30/2021] [Indexed: 01/20/2023]
Abstract
Carcinoembryonic antigen levels in the human body reflect the conditions associated with a variety of tumors and can be used for the identification, development, monitoring, and prognosis of lung cancer, colorectal cancer, and breast cancer. In this study, an amperometric immunosensor with CuCo/carbon nanocubes (CuCo/CNC) as the signal label is constructed. The bimetal-doped carbon skeleton structure has a high specific surface area and exhibits good electrocatalytic activity. In addition, Au/g-C3N4 nanosheets (Au/g-C3N4 NSs) are used to modify the substrate platform, facilitating the loading of more capture antibodies. The reaction mechanism was explored through electrochemical methods, X-ray powder diffraction, X-ray photoelectron spectroscopy, and other methods. Kinetic studies have shown that CuCo/CNC have good peroxidase-like activity. In addition, the electrocatalytic reduction ability of CuCo/CNC on hydrogen peroxide can be monitored using amperometric i-t curve (- 0.2 V, vs. SCE), and the response current value is positively correlated with the CEA antigen concentration. The prepared electrochemical immunosensor has good selectivity, precision, and stability. The dynamic range of the sensor was 0.0001-80 ng/mL, and the detection limit was 0.031 pg/mL. In addition, the recovery and relative standard deviation in real serum samples were 97.7-103 % and 3.25-4.13 %, respectively. The results show that the sensor has good analytical capabilities and can provide a new method for the clinical monitoring of CEA.
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Zhang C, Zhang N, Xu Y, Feng J, Yao T, Wang F, Ma Z, Han H. Fenton reaction-mediated dual-attenuation of signal for ultrasensitive amperometric immunoassay. Biosens Bioelectron 2021; 178:113009. [PMID: 33493899 DOI: 10.1016/j.bios.2021.113009] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/07/2021] [Accepted: 01/15/2021] [Indexed: 12/20/2022]
Abstract
In order to alter the complexion of immunoprobe with large impedance as negative factor in sensitivity of amperometric immunosensor, a strategy of Fenton reaction-mediated dual-attenuation of signal was proposed. Herein, metal-polydopamine-Fe3+ composite with the ability of Fenton reaction was initially prepared as immunoprobe for an ultrasensitive immunoassay. The polymerization of dopamine occurred on the surface of ZIF-67 to gain the metal-polydopamine shell, which possessed rich functional groups, negative charge and high specific surface. Then the prepared functional shell was further used to absorb Fe3+ and immobilize labeling antibody as immunoprobe, which was used to construct a sandwich type immunosensor. With addition of H2O2 and aniline, Fenton reaction was triggered to produce hydroxyl radicals, which can not only decrease the current value by degrading methylene blue molecules, but also further initiate aniline to polymerize into non-conductive polyaniline for successive abatement of signal intensity. Therefore, the dual-attenuation of signal model rendered the immunoprobe into a favorable factor and synchronously enhance sensitivity. Expectedly, the detection performance with a linear range from 1.0 × 10-4-100 ng mL-1 and ultralow detection limit of 9.07 × 10-5 ng mL-1 toward neuron-specific enolase was obtained under optimal conditions. This work offered a novel tactic for enhancing sensitivity of immunosensor through the preparation of functional immunoprobe and its rational utilization as signal enhancer.
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Affiliation(s)
- Chi Zhang
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Nana Zhang
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Yang Xu
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Jiejie Feng
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Tao Yao
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Fei Wang
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Zhanfang Ma
- Department of Chemistry, Capital Normal University, Beijing, 100048, China.
| | - Hongliang Han
- Department of Chemistry, Capital Normal University, Beijing, 100048, China.
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Feng J, Liang X, Ma Z. New immunoprobe: Dual-labeling ZIF-8 embellished with multifunctional bovine serum albumin lamella for electrochemical immunoassay of tumor marker. Biosens Bioelectron 2021; 175:112853. [PMID: 33262062 DOI: 10.1016/j.bios.2020.112853] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 11/10/2020] [Accepted: 11/23/2020] [Indexed: 02/06/2023]
Abstract
A new immunoprobe, which can initiate the sedimentation of Ag nanoparticles (NPs) on an electrode surface, was developed for the electrochemical detection of carbohydrate antigen 72-4 (CA 72-4). To design the immunoprobe, zeolitic imidazolate frameworks (ZIFs) were employed as the carrier to enrich thionine molecules, then bovine serum albumin (BSA) was modified on the electrode surface. Advantageously, BSA, served as an anchor to further attach the labeling antibodies (Ab2) and alkaline phosphatase (ALP) to also be modified on the surface through covalent bonding. To construct the immunosensor, multiwalled carbon nanotube-graphene oxide composites were employed to provide active sites, and the electrodeposited Au NPs were used to immobilize coating antibodies. In the presence of CA 72-4, a sandwich immunosensor was established, and a cascade reaction was initiated to deposit Ag NPs under the catalysis, which can further improve the conductivity of electrode interface. Under the optimal conditions, the immunosensor displayed excellent performance with a wide linear range from 1 μU mL-1 to 10 U mL-1 and an ultralow detection limit of 0.438 μU mL-1 (S/N = 3).
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Affiliation(s)
- Jiejie Feng
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Xiaoyu Liang
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Zhanfang Ma
- Department of Chemistry, Capital Normal University, Beijing, 100048, China.
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Wang H, Ma Z. Copper peroxide/ZIF-8 self-producing H 2O 2 triggered cascade reaction for amperometric immunoassay of carbohydrate antigen 19-9. Biosens Bioelectron 2020; 169:112644. [PMID: 32979592 DOI: 10.1016/j.bios.2020.112644] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 09/15/2020] [Accepted: 09/19/2020] [Indexed: 02/06/2023]
Abstract
Generally, H2O2 is frequently adopted to improve analysis capabilities of various detection systems. However, the addition of H2O2 with relatively higher concentration can lower the bioactivity of antibodies or antigens and the sensing interface stability in most peroxidase and peroxidase-like immunosensors. In order to solve these issues, we designed a novel copper peroxide/ZIF-8 immunoprobe that can self-produce H2O2 to trigger a cascade reaction for the sensitive detection of carbohydrate antigen 19-9. Specifically, CP/ZIF-8 plays a key role as a "signal switch" in the immunosensor. In the presence of HCl, the structures of ZIF-8 and copper peroxide can be broken, producing Cu2+ and H2O2 and a subsequent Fenton-type reaction that generates •OH. The resulting •OH can induce the decomposition of 3-aminobenzeneboronic acid/poly (vinyl alcohol) (PVA) film on the electrode. Although the immunosensor initially showed little current signal due to the poor conductivity pf ZIF-8 and PVA, the current signal was significantly amplified by a HCl-triggered cascade reaction. Under optimal conditions, the immunosensor displayed a wide linear range from 0.0001 to 100 U mL-1 with an ultralow limit of detection of 53.5 μU mL-1 (S/N = 3) for carbohydrate antigen 19-9. Considering these advantages, namely self-producing H2O2 and easy operation, this strategy paves a new way to design other novel sensors.
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Affiliation(s)
- Huiqiang Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhanfang Ma
- Department of Chemistry, Capital Normal University, Beijing, 100048, China.
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Melo AMA, Oliveira MRF, Furtado RF, de Fatima Borges M, Biswas A, Cheng HN, Alves CR. Preparation and characterization of carboxymethyl cashew gum grafted with immobilized antibody for potential biosensor application. Carbohydr Polym 2020; 228:115408. [PMID: 31635742 DOI: 10.1016/j.carbpol.2019.115408] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/27/2019] [Accepted: 09/29/2019] [Indexed: 11/27/2022]
Abstract
This report details the design of carboxymethylated cashew gum (CG) as a platform for antibody (Ab) immobilization, which can then be used as a biosensor for bacteria detection. The CG was isolated and characterized, followed by conversion to carboxymethyl cashew gum (CMCG). The CMCG film was a viable support for antibody immobilization; it was electrodeposited on gold surface using the cyclic voltammetry technique, applying a potential sweep from -1.0 V to 1.3 V with a scan rate of 50 mV s-1 and 10 scans. The COOH groups on the surface of the film were critical in promoting Ab bonding. The immobilization of the Ab was mediated by protein A (PrA) for recognition of the antigen. Voltammetry studies were used to monitor the antibody immobilization. Finally, the analytical response of the CMCG-PrA-Ab system was evaluated with the chronoamperometry technique and was found to detect Salmonella Typhimurium bacteria rapidly and efficiently.
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Affiliation(s)
- Airis Maria Araújo Melo
- Department of Chemistry, State University of Ceara, 1700 Dr. Silas Munguba Avenue, Fortaleza, CE 60740-903, Brazil
| | - Maria Roniele Felix Oliveira
- Department of Chemistry, State University of Ceara, 1700 Dr. Silas Munguba Avenue, Fortaleza, CE 60740-903, Brazil
| | - Roselayne Ferro Furtado
- Embrapa Tropical Agroindustry, 2270 Sara Mesquita Alves Street, Fortaleza, CE 60511-110, Brazil.
| | - Maria de Fatima Borges
- Embrapa Tropical Agroindustry, 2270 Sara Mesquita Alves Street, Fortaleza, CE 60511-110, Brazil
| | - Atanu Biswas
- USDA Agricultural Research Service, National Center for Agricultural Utilization Research, 1815 North University Street, Peoria, IL, 61604, USA
| | - Huai N Cheng
- USDA Agricultural Research Service, Southern Regional Research Center, 1100 Robert E. Lee Blvd., New Orleans, LA, 70124, USA
| | - Carlucio Roberto Alves
- Department of Chemistry, State University of Ceara, 1700 Dr. Silas Munguba Avenue, Fortaleza, CE 60740-903, Brazil
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Zheng Y, Ma Z. Multifunctionalized ZIFs nanoprobe-initiated tandem reaction for signal amplified electrochemical immunoassay of carbohydrate antigen 24-2. Biosens Bioelectron 2019; 129:42-49. [PMID: 30682688 DOI: 10.1016/j.bios.2019.01.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/19/2018] [Accepted: 01/04/2019] [Indexed: 12/14/2022]
Abstract
Based on multifunctionalized zeolitic imidazolate frameworks (ZIFs)-initiated cascade reaction triggered signal amplification strategy, a novel sandwich-type amperometric immunosensor was constructed for ultrasensitive detection of carbohydrate antigen 24-2 (CA 242). The methylene blue-glucose oxidase-ZIF-8/reduced graphene oxide-Au (MB-GOx-ZIF-8/Au-rGO) was synthesized by a facile coprecipitation method for enzyme immobilization and redox species loading. The multifunctionalized ZIFs conjugated with labeling antibodies were employed as immunoprobe. In the presence of glucose, tandem reaction was driven by the immunoprobe to catalyze the glucose oxidation to yield H2O2. Simultaneously, the generated H2O2 induced the decomposition of poly(anilineboronicacid) (PABA)/poly(vinyl alcohol) (PVA) films on substrate, which made the PVA chains breaking away from PABA polymer. Due to the poor conductivity of PVA chains, this decomposition reaction can amplify the current signal. The current difference (ΔI) caused by per unit concentration target with tandem reaction amplification was elevated prominently, resulting in ultrasensitive analytical performance of the immunosensor. Under optimal conditions, the proposed immunosensor displayed wide linear range from 0.001 to 1000 U mL-1 with an ultralow limit of detection 69.34 μU mL-1 (S/N = 3). This method successfully implemented functionalized ZIFs in immunoprobe construction for sensitivity amplification, providing a promising strategy to construct ultrasensitive immunosensing platform for analysis of other tumor marker.
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Affiliation(s)
- Yun Zheng
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Zhanfang Ma
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
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Prado IC, Souza ALA, Provance DW, Cassella RJ, De-Simone SG. Ultrasensitive and rapid immuno-detection of human IgE anti-therapeutic horse sera using an electrochemical immunosensor. Anal Biochem 2017; 538:13-19. [PMID: 28919435 DOI: 10.1016/j.ab.2017.09.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 09/06/2017] [Accepted: 09/11/2017] [Indexed: 10/18/2022]
Abstract
Antivenom allergy disease mediated by patient IgE is an important public health care concern. To improve detection of hypersensitive individuals prior to passive antibody therapy, an amperometric immunosensor was developed to detect reactive human IgE. Whole horse IgG3 (hoIgG3) was immobilized onto the surface of carbon or gold screen-printed electrodes through a cross-linking solution of glutaraldehyde on a chitosan film. Sera from persons with a known allergic response to hoIgG3 or non-allergic individuals was applied to the sensor. Bound human IgE (humIgE) was detected by an anti-humIgE antibody through a quantitative amperometric determination by tracking via the electrochemical reduction of the quinone generated from the hydroquinone with the application of a potential of 25 mV. The optimal immunosensor configuration detected reactive humIgE at a dilution of 1:1800 of the human sera that represent a detection limit of 0.5 pg/mL. Stability testing demonstrated that through 20 cycles of a scan, the specificity and performance remained robust. The new immunosensor successfully detected humIgE antibodies reactive against hoIgG3, which could allow the diagnosis of potential allergenic patients needing therapeutic antivenom preparations from a horse.
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Affiliation(s)
- Isis C Prado
- FIOCRUZ, Center for Technological Development in Health (CDTS)/National Institute of Science and Technology on Innovation in Neglected Population Diseases (INCT-IDPN) FIOCRUZ, Rio de Janeiro, RJ, Brazil; Federal Fluminense University, Chemistry Institute, Analytical Chemistry Department, Niterói, Rio de Janeiro, Brazil
| | - André L A Souza
- FIOCRUZ, Oswaldo Cruz Institute, Laboratory of Experimental and Computational Biochemistry of Pharmaceuticals, Rio de Janeiro, RJ, Brazil
| | - David W Provance
- FIOCRUZ, Center for Technological Development in Health (CDTS)/National Institute of Science and Technology on Innovation in Neglected Population Diseases (INCT-IDPN) FIOCRUZ, Rio de Janeiro, RJ, Brazil
| | - Ricardo J Cassella
- Federal Fluminense University, Chemistry Institute, Analytical Chemistry Department, Niterói, Rio de Janeiro, Brazil
| | - Salvatore G De-Simone
- FIOCRUZ, Center for Technological Development in Health (CDTS)/National Institute of Science and Technology on Innovation in Neglected Population Diseases (INCT-IDPN) FIOCRUZ, Rio de Janeiro, RJ, Brazil; FIOCRUZ, Oswaldo Cruz Institute, Laboratory of Experimental and Computational Biochemistry of Pharmaceuticals, Rio de Janeiro, RJ, Brazil; Federal Fluminense University, Biology Institute, Cellular and Molecular Department, Niterói, Rio de Janeiro, Brazil.
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Torrente-Rodríguez RM, Campuzano S, Ruiz-Valdepeñas-Montiel V, Pedrero M, Fernández-Aceñero MJ, Barderas R, Pingarrón JM. Rapid endoglin determination in serum samples using an amperometric magneto-actuated disposable immunosensing platform. J Pharm Biomed Anal 2016; 129:288-293. [PMID: 27448312 DOI: 10.1016/j.jpba.2016.07.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 07/12/2016] [Accepted: 07/13/2016] [Indexed: 12/22/2022]
Abstract
A sensitive and rapid method for the determination of the clinically relevant biomarker human endoglin (CD105) in serum samples is presented, involving a magneto-actuated immunoassay and amperometric detection at disposable screen-printed carbon electrodes (SPCEs). Micro-sized magnetic particles were modified with a specific antibody to selectively capture the target protein which was further sandwiched with a secondary HRP-labeled antibody. The immunocomplexes attached to the magnetic carriers were amperometrically detected at SPCEs using the hydroquinone (HQ)/H2O2/HRP system. The magneto-actuated immunosensing platform was able to detect 5 pmoles of endoglin (in 25μL of sample, 0.2μM) in 30min providing statistically similar results to those obtained using a commercial ELISA kit for the determination of endogenous content of endoglin in human serum samples.
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Affiliation(s)
- Rebeca M Torrente-Rodríguez
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - Susana Campuzano
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | | | - María Pedrero
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | | | - Rodrigo Barderas
- Departamento de Bioquímica y Biología Molecular, Facultad de CC. Químicas, Universidad Complutense de Madrid, Madrid, Spain.
| | - José M Pingarrón
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
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Ruiz-Valdepeñas Montiel V, Campuzano S, Pellicanò A, Torrente-Rodríguez RM, Reviejo AJ, Cosio MS, Pingarrón JM. Sensitive and selective magnetoimmunosensing platform for determination of the food allergen Ara h 1. Anal Chim Acta 2015; 880:52-9. [PMID: 26092337 DOI: 10.1016/j.aca.2015.04.041] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 04/14/2015] [Accepted: 04/20/2015] [Indexed: 11/28/2022]
Abstract
A highly sensitive disposable amperometric immunosensor based on the use of magnetic beads (MBs) is described for determination of Ara h 1, the major peanut allergen, in only 2h. The approach uses a sandwich configuration involving selective capture and biotinylated detector antibodies and carboxylic acid-modified MBs (HOOC-MBs). The MBs bearing the immunoconjugates are captured by a magnet placed under the surface of a disposable screen-printed carbon electrode (SPCE) and the affinity reactions are monitored amperometrically at -0.20 V (vs a Ag pseudo-reference electrode) in the presence of hydroquinone (HQ) as electron transfer mediator and upon addition of H2O2 as the enzyme substrate. The developed immunosensor exhibits a wide range of linearity between 20.8 and 1000.0 ng mL(-1) Ara h 1, a detection limit of 6.3 ng mL(-1), a great selectivity, a good reproducibility with a RSD of 6.3% for six different immunosensors and a useful lifetime of 25 days. The usefulness of the immunosensor was demonstrated by determining Ara h 1 in different matrices (food extracts and saliva). The results correlated properly with those provided by a commercial ELISA method offering a reliable and promising analytical screening tool in the development of user-friendly devices for on-site determination of Ara h 1.
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Affiliation(s)
- V Ruiz-Valdepeñas Montiel
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - S Campuzano
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - A Pellicanò
- Department of Food, Environmental and Nutritional Sciences (DEFENS), University of Milan, Via Celoria 2, 20133 Milan, Italy.
| | - R M Torrente-Rodríguez
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - A J Reviejo
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - M S Cosio
- Department of Food, Environmental and Nutritional Sciences (DEFENS), University of Milan, Via Celoria 2, 20133 Milan, Italy.
| | - J M Pingarrón
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
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