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Saxena K, Murti BT, Yang PK, Malhotra BD, Chauhan N, Jain U. Fabrication of a Molecularly Imprinted Nano-Interface-Based Electrochemical Biosensor for the Detection of CagA Virulence Factors of H. pylori. BIOSENSORS 2022; 12:1066. [PMID: 36551033 PMCID: PMC9775653 DOI: 10.3390/bios12121066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/12/2022] [Accepted: 11/18/2022] [Indexed: 06/17/2023]
Abstract
H. pylori is responsible for several stomach-related diseases including gastric cancer. The main virulence factor responsible for its establishment in human gastric cells is known as CagA. Therefore, in this study, we have fabricated a highly sensitive MIP-based electrochemical biosensor for the detection of CagA. For this, an rGO and gold-coated, screen-printed electrode sensing platform was designed to provide a surface for the immobilization of a CagA-specific, molecularly imprinted polymer; then it was characterized electrochemically. Interestingly, molecular dynamics simulations were studied to optimize the MIP prepolymerization system, resulting in a well-matched, optimized molar ratio within the experiment. A low binding energy upon template removal indicates the capability of MIP to recognize the CagA antigen through a strong binding affinity. Under the optimized electrochemical experimental conditions, the fabricated CagA-MIP/Au/rGO@SPE sensor exhibited high sensitivity (0.275 µA ng-1 mL-1) and a very low limit of detection (0.05 ng mL-1) in a linear range of 0.05-50 ng mL-1. The influence of other possible interferents in analytical response has also been observed with the successful determination of the CagA antigen.
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Affiliation(s)
- Kirti Saxena
- Amity Institute of Nanotechnology, Amity University Uttar Pradesh (AUUP), Sector-125, Noida 201313, India
| | - Bayu Tri Murti
- Graduate Institute of Biomedical Materials and Tissue Engineering, Taipei Medical University, Taipei 11031, Taiwan
- Department of Biomedical Sciences and Engineering, National Central University, Chung-li 32001, Taiwan
| | - Po-Kang Yang
- Department of Biomedical Sciences and Engineering, National Central University, Chung-li 32001, Taiwan
| | - Bansi Dhar Malhotra
- Nanobioelectronics Laboratory, Department of Biotechnology, Delhi Technological University, Delhi 110042, India
| | - Nidhi Chauhan
- Amity Institute of Nanotechnology, Amity University Uttar Pradesh (AUUP), Sector-125, Noida 201313, India
| | - Utkarsh Jain
- Amity Institute of Nanotechnology, Amity University Uttar Pradesh (AUUP), Sector-125, Noida 201313, India
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An Electrochemical Sensor Based on a Nitrogen-Doped Carbon Material and PEI Composites for Sensitive Detection of 4-Nitrophenol. NANOMATERIALS 2021; 12:nano12010086. [PMID: 35010037 PMCID: PMC8746740 DOI: 10.3390/nano12010086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 12/25/2022]
Abstract
A glassy carbon electrode (GCE) was modified with nitrogen-doped carbon materials (NC) and polyethyleneimine (PEI) composites to design an electrochemical sensor for detecting 4-nitrophenol (4-NP). The NC materials were prepared by a simple and economical method through the condensation and carbonization of formamide. The NC materials were dispersed in a polyethyleneimine (PEI) solution easily. Due to the excellent properties of NC and PEI as well as their synergistic effect, the electrochemical reduction of the 4-NP on the surface of the NC-PEI composite modified electrode was effectively enhanced. Under the optimized conditions, at 0.06-10 μM and 10-100 μM concentration ranges, the NC-PEI/GCE sensor shows a linear response to 4-NP, and the detection limit is 0.01 μM (the signal-to-noise ratio is three). The reliability of the sensor for the detection of 4-NP in environmental water samples was successfully evaluated. In addition, the sensor has many advantages, including simple preparation, fast response, high sensitivity and good repeatability. It may be helpful for potential applications in detecting other targets.
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Sensing Methods for Hazardous Phenolic Compounds Based on Graphene and Conducting Polymers-Based Materials. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9100291] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
It has been known for years that the phenolic compounds are able to exert harmful effects toward living organisms including humans due to their high toxicity. Living organisms were exposed to these phenolic compounds as they were released into the environment as waste products from several fast-growing industries. In this regard, tremendous efforts have been made by researchers to develop sensing methods for the detection of these phenolic compounds. Graphene and conducting polymers-based materials have arisen as a high potential sensing layer to improve the performance of the developed sensors. Henceforth, this paper reviews the existing investigations on graphene and conducting polymer-based materials incorporated with various sensors that aimed to detect hazardous phenolic compounds, i.e., phenol, 2-chlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol, pentachlorophenol, 2-nitrophenol, 4-nitrophenol, 2,4-dinitrophenol, and 2,4-dimethylphenol. The whole picture and up-to-date information on the graphene and conducting polymers-based sensors are arranged in systematic chronological order to provide a clearer insight in this research area. The future perspectives of this study are also included, and the development of sensing methods for hazardous phenolic compounds using graphene and conducting polymers-based materials is expected to grow more in the future.
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Zarejousheghani M, Rahimi P, Borsdorf H, Zimmermann S, Joseph Y. Molecularly Imprinted Polymer-Based Sensors for Priority Pollutants. SENSORS (BASEL, SWITZERLAND) 2021; 21:2406. [PMID: 33807242 PMCID: PMC8037679 DOI: 10.3390/s21072406] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/27/2021] [Accepted: 03/29/2021] [Indexed: 01/05/2023]
Abstract
Globally, there is growing concern about the health risks of water and air pollution. The U.S. Environmental Protection Agency (EPA) has developed a list of priority pollutants containing 129 different chemical compounds. All of these chemicals are of significant interest due to their serious health and safety issues. Permanent exposure to some concentrations of these chemicals can cause severe and irrecoverable health effects, which can be easily prevented by their early identification. Molecularly imprinted polymers (MIPs) offer great potential for selective adsorption of chemicals from water and air samples. These selective artificial bio(mimetic) receptors are promising candidates for modification of sensors, especially disposable sensors, due to their low-cost, long-term stability, ease of engineering, simplicity of production and their applicability for a wide range of targets. Herein, innovative strategies used to develop MIP-based sensors for EPA priority pollutants will be reviewed.
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Affiliation(s)
- Mashaalah Zarejousheghani
- Institute of Electronic and Sensor Materials, Faculty of Materials Science and Materials Technology, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany; (P.R.); (Y.J.)
- Department Monitoring and Exploration Technologies, Helmholtz Centre for Environmental Research-UFZ, 04318 Leipzig, Germany;
| | - Parvaneh Rahimi
- Institute of Electronic and Sensor Materials, Faculty of Materials Science and Materials Technology, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany; (P.R.); (Y.J.)
| | - Helko Borsdorf
- Department Monitoring and Exploration Technologies, Helmholtz Centre for Environmental Research-UFZ, 04318 Leipzig, Germany;
| | - Stefan Zimmermann
- Department of Sensors and Measurement Technology, Institute of Electrical Engineering and Measurement Technology, Leibniz University Hannover, 30167 Hannover, Germany;
| | - Yvonne Joseph
- Institute of Electronic and Sensor Materials, Faculty of Materials Science and Materials Technology, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany; (P.R.); (Y.J.)
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Chen TW, Rajaji U, Chen SM, Ramalingam RJ, Liu X. Developing green sonochemical approaches towards the synthesis of highly integrated and interconnected carbon nanofiber decorated with Sm 2O 3 nanoparticles and their use in the electrochemical detection of toxic 4-nitrophenol. ULTRASONICS SONOCHEMISTRY 2019; 58:104595. [PMID: 31450363 DOI: 10.1016/j.ultsonch.2019.05.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 05/09/2019] [Accepted: 05/09/2019] [Indexed: 06/10/2023]
Abstract
Highly integrated and interconnected carbon nanofiber hybrid nanofibers decorated with samarium(III) oxide (Sm2O3 NPs) nanoparticles was synthesized by ultrasound assisted method and characterized using X-ray diffraction analysis (XRD), transmission electron microscopy (TEM), energy dispersive x-rays (EDX), X-ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy (EIS). The electrocatalytic activity (ECA) was monitored by detection of toxic 4-nitrophenol under phosphate buffer (pH 7.0). The sonochemical route employed was efficient to prepare Sm2O3 NPs modified electrode and this class of catalysts might be active electrocatalyst for the detection of 4-nitrophenol in drinking water. The screen-printed carbon electrode (SPCE) modified with Sm2O3 NPs@f-CNFs was fabricated in a facile way for the sensitively electrochemical determination of 4-nitrophenol. Under optimized preparation conditions, the electrochemical testing (differential pulse voltammetry) of 4-nitrophenol exhibited a reduction peak at -0.64 V. Compared with bare SPCE, Sm2O3 NPs, f-CNFs, Sm2O3 NPs@f-CNFs modified SPCE showed highest current response. The reduction peaks current vs the concentration of 4-nitrophenol exhibits a linear relation with the concentration range from 0.02 to 387.2 μM and the limit of detection was determined to be M (S/N = 3). In addition, Sm2O3 NPs@f-CNFs was contributed to detecting 4-nitrophenol in drinking water and river water samples with the recover ranging from 95.6% to 98.2%.
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Affiliation(s)
- Tse-Wei Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan; Research and Development Center for Smart Textile Technology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
| | - Umamaheswari Rajaji
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan.
| | - R Jothi Ramalingam
- Surfactant Research Chair, Chemistry Department, College of Science, King Saud University, P.O. Box-2455, Riyadh 11451, Saudi Arabia
| | - Xiaoheng Liu
- Key Laboratory of Education Ministry for Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Nanjing 210094, China.
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Lee MH, Thomas JL, Liu WC, Zhang ZX, Liu BD, Yang CH, Lin HY. A multichannel system integrating molecularly imprinted conductive polymers for ultrasensitive voltammetric determination of four steroid hormones in urine. Mikrochim Acta 2019; 186:695. [PMID: 31612312 DOI: 10.1007/s00604-019-3797-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 09/07/2019] [Indexed: 11/30/2022]
Abstract
This work reports on a modularized electrochemical method for the determination of the hormones cortisol, progesterone, testosterone and 17β-estradiol in urine. These hormones were employed as templates when generating molecular imprints from aniline and metanilic acid by electropolymerization on the surface of screen-printed electrodes. The electrically conductive imprint was characterized by SEM, AFM and cyclic voltammetry. A four-channel system was then established to enable simultaneous determination of the hormones by cyclic voltammetry. The detection limits for cortisol, progesterone, testosterone and 17β-estradiol are as low as 2, 2.5, 10 and 9 ag·mL-1 (for S/N = 3). Graphical abstract A four-channel system was established to enable simultaneous determination of 4 steroid hormones by cyclic voltammetry and by using moleculalry imprinted polymers.
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Affiliation(s)
- Mei-Hwa Lee
- Department of Materials Science and Engineering, I-Shou University, Kaohsiung, 84001, Taiwan
| | - James L Thomas
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Wei-Chiun Liu
- Department of Electrical Engineering, National Cheng Kung University, Tainan, 701, Taiwan
| | - Zheng-Xiang Zhang
- Department of Chemical and Materials Engineering, National University of Kaohsiung (NUK), 700, Kaohsiung University Rd., Nan-Tzu District, Kaohsiung, 81148, Taiwan
| | - Bin-Da Liu
- Department of Electrical Engineering, National Cheng Kung University, Tainan, 701, Taiwan
| | - Chien-Hsin Yang
- Department of Chemical and Materials Engineering, National University of Kaohsiung (NUK), 700, Kaohsiung University Rd., Nan-Tzu District, Kaohsiung, 81148, Taiwan.
| | - Hung-Yin Lin
- Department of Chemical and Materials Engineering, National University of Kaohsiung (NUK), 700, Kaohsiung University Rd., Nan-Tzu District, Kaohsiung, 81148, Taiwan.
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Khan SB, Ali F, Akhtar K. Chitosan nanocomposite fibers supported copper nanoparticles based perceptive sensor and active catalyst for nitrophenol in real water. Carbohydr Polym 2019; 207:650-662. [DOI: 10.1016/j.carbpol.2018.12.032] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 12/09/2018] [Accepted: 12/11/2018] [Indexed: 01/22/2023]
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8
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Anantha-Iyengar G, Shanmugasundaram K, Nallal M, Lee KP, Whitcombe MJ, Lakshmi D, Sai-Anand G. Functionalized conjugated polymers for sensing and molecular imprinting applications. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2018.08.001] [Citation(s) in RCA: 129] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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A highly-sensitive VB2 electrochemical sensor based on one-step co-electrodeposited molecularly imprinted WS2-PEDOT film supported on graphene oxide-SWCNTs nanocomposite. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:77-87. [DOI: 10.1016/j.msec.2018.06.029] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 04/05/2018] [Accepted: 06/13/2018] [Indexed: 01/09/2023]
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10
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Synthesis and characterization of nanostructure molecularly imprinted polyaniline/graphene oxide composite as highly selective electrochemical sensor for detection of p -nitrophenol. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.02.019] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Zaidi SA. Molecular imprinting polymers and their composites: a promising material for diverse applications. Biomater Sci 2017; 5:388-402. [DOI: 10.1039/c6bm00765a] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Molecular imprinted polymerization is considered one of the most useful preparation strategies to obtain highly selective polymeric materials called molecular imprinted polymers (MIPs).
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12
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Ayankojo AG, Tretjakov A, Reut J, Boroznjak R, Öpik A, Rappich J, Furchner A, Hinrichs K, Syritski V. Molecularly Imprinted Polymer Integrated with a Surface Acoustic Wave Technique for Detection of Sulfamethizole. Anal Chem 2016; 88:1476-84. [DOI: 10.1021/acs.analchem.5b04735] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Akinrinade George Ayankojo
- Department
of Materials Science, Tallinn University of Technology, Ehitajate
tee 5, 19086 Tallinn, Estonia
| | - Aleksei Tretjakov
- Department
of Materials Science, Tallinn University of Technology, Ehitajate
tee 5, 19086 Tallinn, Estonia
| | - Jekaterina Reut
- Department
of Materials Science, Tallinn University of Technology, Ehitajate
tee 5, 19086 Tallinn, Estonia
| | - Roman Boroznjak
- Department
of Materials Science, Tallinn University of Technology, Ehitajate
tee 5, 19086 Tallinn, Estonia
| | - Andres Öpik
- Department
of Materials Science, Tallinn University of Technology, Ehitajate
tee 5, 19086 Tallinn, Estonia
| | - Jörg Rappich
- Helmholtz-Zentrum
Berlin für Materialien und Energie GmbH, Institut für Silizium-Photovoltaik, Kekuléstr. 5, 12489 Berlin, Germany
| | - Andreas Furchner
- Leibniz-Institut für Analytische Wissenschaften−ISAS−e.V., Schwarzschildstraße 8, 12489 Berlin, Germany
| | - Karsten Hinrichs
- Leibniz-Institut für Analytische Wissenschaften−ISAS−e.V., Schwarzschildstraße 8, 12489 Berlin, Germany
| | - Vitali Syritski
- Department
of Materials Science, Tallinn University of Technology, Ehitajate
tee 5, 19086 Tallinn, Estonia
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Suresh R, Giribabu K, Manigandan R, Praveen Kumar S, Munusamy S, Muthamizh S, Narayanan V. Polyaniline Nanorods: Synthesis, Characterization, and Application for the Determination ofpara-Nitrophenol. ANAL LETT 2015. [DOI: 10.1080/00032719.2015.1067815] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Arulraj AD, Vijayan M, Vasantha VS. Highly selective and sensitive simple sensor based on electrochemically treated nano polypyrrole-sodium dodecyl sulphate film for the detection of para-nitrophenol. Anal Chim Acta 2015; 899:66-74. [DOI: 10.1016/j.aca.2015.09.055] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2015] [Revised: 09/10/2015] [Accepted: 09/30/2015] [Indexed: 10/22/2022]
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15
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Li J, Zhang L, Wei G, Zhang Y, Zeng Y. Highly sensitive and doubly orientated selective molecularly imprinted electrochemical sensor for Cu2+. Biosens Bioelectron 2015; 69:316-20. [DOI: 10.1016/j.bios.2015.03.010] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Revised: 02/28/2015] [Accepted: 03/03/2015] [Indexed: 11/25/2022]
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16
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Highly selective and sensitive determination of dopamine by the novel molecularly imprinted poly(nicotinamide)/CuO nanoparticles modified electrode. Biosens Bioelectron 2015; 67:121-8. [DOI: 10.1016/j.bios.2014.07.053] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 07/14/2014] [Accepted: 07/22/2014] [Indexed: 01/13/2023]
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17
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Komarova E, Aldissi M, Bogomolova A. Design of molecularly imprinted conducting polymer protein-sensing films via substrate–dopant binding. Analyst 2015; 140:1099-106. [DOI: 10.1039/c4an01965b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
MIP protein sensing films are prepared electrochemically by substrate-guided macromolecular dopant immobilization followed by conducting polymer film formation.
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Affiliation(s)
| | - Matt Aldissi
- Smart Polymers Research Corporation
- Belleair Beach
- USA
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18
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Cho S, Lee JS, Jun J, Kim SG, Jang J. Fabrication of water-dispersible and highly conductive PSS-doped PANI/graphene nanocomposites using a high-molecular weight PSS dopant and their application in H2S detection. NANOSCALE 2014; 6:15181-15195. [PMID: 25375086 DOI: 10.1039/c4nr04413d] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This work describes the fabrication of poly(4-styrenesulfonic acid)-doped polyaniline/graphene (PSS-doped PANI/graphene) nanocomposites and their use as sensing elements for hydrogen sulfide (H2S) detection. PSS with a weight-average molecular weight (Mw) of 1.96 × 10(6) was synthesized using low-temperature free-radical polymerization. The PSS was used as both a doping agent and a binding agent for the polymerization of aniline monomers in a biphasic system (water-chloroform) at -50 °C. The high Mw of PSS resulted in relatively large particle sizes and smooth surfaces of the PSS-doped PANI. These physical characteristics, in turn, resulted in low interparticle resistance and high conductivity. In addition, the PSS allowed homogeneous dispersion of reduced graphene sheets through electrostatic repulsion. The prepared PSS-doped PANI/graphene solutions showed good compatibility with flexible poly(ethylene terephthalate) (PET) substrates, making them suitable for flexible sensor electrodes. Changes in the charge-transport properties, such as protonation level, conjugation length, crystalline structure, and charge-transfer resistance, of the electrode materials were the main factors influencing the electrical and sensor performance of the PSS-doped PANI-based electrodes. PSS-doped PANI/graphene composites containing 30 wt% graphene showed the highest conductivity (168.4 S cm(-1)) and the lowest minimum detection level (MDL) for H2S gas (1 ppm). This result is consistent with the observed improvements in charge transport in the electrode materials via strong π-π stacking interactions between the PANI and the graphene sheets.
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Affiliation(s)
- Sunghun Cho
- Program of Chemical Convergence for Energy and Environment (C2E2), School of Chemical and Biological Engineering, College of Engineering, Seoul National University, 599 Gwanangno, Gwanakgu, Seoul 151-742, Korea.
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Singh K, Kaur A, Umar A, Chaudhary GR, Singh S, Mehta SK. A comparison on the performance of zinc oxide and hematite nanoparticles for highly selective and sensitive detection of para-nitrophenol. J APPL ELECTROCHEM 2014. [DOI: 10.1007/s10800-014-0762-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Santhiago M, Henry CS, Kubota LT. Low cost, simple three dimensional electrochemical paper-based analytical device for determination of p-nitrophenol. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.03.109] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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21
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Xu G, Yang L, Zhong M, Li C, Lu X, Kan X. Selective recognition and electrochemical detection of p-nitrophenol based on a macroporous imprinted polymer containing gold nanoparticles. Mikrochim Acta 2013. [DOI: 10.1007/s00604-013-1090-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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