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Kaewket K, Ngamchuea K. Microporous carbon for fast and simple electrochemical detection of imidacloprid insecticide in fruit and water samples. RSC Adv 2023; 13:4532-4541. [PMID: 36760309 PMCID: PMC9893441 DOI: 10.1039/d3ra00192j] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 01/27/2023] [Indexed: 02/05/2023] Open
Abstract
Herein, a fast and sensitive electrochemical sensor was developed for imidacloprid detection using low-cost disposable microporous carbon screen-printed electrodes. The electrochemical behaviour of imidacloprid at the microporous material was investigated in detail. The developed sensor allowed imidacloprid detection in the linear range of 0.00-1.00 mM with a sensitivity of 14.43 ± 0.42 μA mM-1 and a detection limit of 2.54 μM (3s B/m). The sensor showed excellent selectivity and high tolerance to possible interference from other tested insecticides and ions. Excellent repeatability (3.42%, n = 3) and reproducibility (2.23%, n = 3) were demonstrated. Application of the sensor in various fruit and water samples without any treatment showed 96.2-103.0% recoveries. The developed sensor further revealed that the most effective method for removing imidacloprid residue from fruit samples was via washing with a mixture of 5% w/v NaCl and 5% w/v bicarbonate at 40 °C.
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Affiliation(s)
- Keerakit Kaewket
- School of Chemistry, Institute of Science, Suranaree University of Technology 111 University Ave, Muang District Nakhon Ratchasima 30000 Thailand +66 44 224 637
| | - Kamonwad Ngamchuea
- School of Chemistry, Institute of Science, Suranaree University of Technology 111 University Ave, Muang District Nakhon Ratchasima 30000 Thailand +66 44 224 637
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2
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A review on rapid detection of modified quartz crystal microbalance sensors for food: Contamination, flavour and adulteration. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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El-Akaad S, Mohamed MA, Abdelwahab NS, Abdelaleem EA, De Saeger S, Beloglazova N. Capacitive sensor based on molecularly imprinted polymers for detection of the insecticide imidacloprid in water. Sci Rep 2020; 10:14479. [PMID: 32879399 PMCID: PMC7468110 DOI: 10.1038/s41598-020-71325-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 08/11/2020] [Indexed: 12/26/2022] Open
Abstract
This manuscript reports on the development of a capacitive sensor for the detection of imidacloprid (IMD) in water samples based on molecularly imprinted polymers (MIPs). MIPs used as recognition elements were synthesized via a photo-initiated emulsion polymerization. The particles were carefully washed using a methanol (MeOH) /acetic acid mixture to ensure complete template removal and were then dried. The average size of the obtained particles was less than 1 µm. The imprinting factor (IF) for IMD was 6 and the selectivity factor (α) for acetamiprid, clothianidin, thiacloprid and thiamethoxam were 14.8, 6.8, 7.1 and 8.2, respectively. The particles were immobilized on the surface of a gold electrode by electropolymerization. The immobilized electrode could be spontaneously regenerated using a mixture of MeOH/10 mM of phosphate buffer (pH = 7.2)/triethylamine before each measurement and could be reused for 32 times. This is the first-time that automated regeneration was introduced as part of a sensing platform for IMD detection. The developed sensor was validated by the analysis of artificially spiked water samples. Under the optimal conditions, the linearity was in the range of 5-100 µM, with a limit of detection (LOD) of 4.61 µM.
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Affiliation(s)
- Suzan El-Akaad
- Centre of Excellence in Mycotoxicology and Public Health, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium.
- Department of Pharmaceutical Chemistry, National Organization for Drug Control and Research (NODCAR), Giza, Egypt.
| | - Mona A Mohamed
- Department of Pharmaceutical Chemistry, National Organization for Drug Control and Research (NODCAR), Giza, Egypt
| | - Nada S Abdelwahab
- Department of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Beni-Suef University, Benisuef, Egypt
| | - Eglal A Abdelaleem
- Department of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Beni-Suef University, Benisuef, Egypt
| | - Sarah De Saeger
- Centre of Excellence in Mycotoxicology and Public Health, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Natalia Beloglazova
- Centre of Excellence in Mycotoxicology and Public Health, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
- Nanotechnology Education and Research Center, South Ural State University, Chelyabinsk, Russia
- Department of General and Inorganic Chemistry, Chemistry Institute, Saratov State University, Astrakhanskaya, Saratov, Russia
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4
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Keçili R, Hussain CM. Recent Progress of Imprinted Nanomaterials in Analytical Chemistry. Int J Anal Chem 2018; 2018:8503853. [PMID: 30057612 PMCID: PMC6051082 DOI: 10.1155/2018/8503853] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 06/03/2018] [Indexed: 11/17/2022] Open
Abstract
Molecularly imprinted polymers (MIPs) are a type of tailor-made materials that have ability to selectively recognize the target compound/s. MIPs have gained significant research interest in solid-phase extraction, catalysis, and sensor applications due to their unique properties such as low cost, robustness, and high selectivity. In addition, MIPs can be prepared as composite nanomaterials using nanoparticles, multiwalled carbon nanotubes (MWCNTs), nanorods, quantum dots (QDs), graphene, and clays. This review paper aims to demonstrate and highlight the recent progress of the applications of imprinted nanocomposite materials in analytical chemistry.
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Affiliation(s)
- Rüstem Keçili
- Anadolu University, Yunus Emre Vocational School of Health Services, Department of Medical Services and Techniques, 26470 Eskişehir, Turkey
| | - Chaudhery Mustansar Hussain
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, N J 07102, USA
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Emir Diltemiz S, Keçili R, Ersöz A, Say R. Molecular Imprinting Technology in Quartz Crystal Microbalance (QCM) Sensors. SENSORS 2017; 17:s17030454. [PMID: 28245588 PMCID: PMC5375740 DOI: 10.3390/s17030454] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 02/20/2017] [Accepted: 02/21/2017] [Indexed: 01/29/2023]
Abstract
Molecularly imprinted polymers (MIPs) as artificial antibodies have received considerable scientific attention in the past years in the field of (bio)sensors since they have unique features that distinguish them from natural antibodies such as robustness, multiple binding sites, low cost, facile preparation and high stability under extreme operation conditions (higher pH and temperature values, etc.). On the other hand, the Quartz Crystal Microbalance (QCM) is an analytical tool based on the measurement of small mass changes on the sensor surface. QCM sensors are practical and convenient monitoring tools because of their specificity, sensitivity, high accuracy, stability and reproducibility. QCM devices are highly suitable for converting the recognition process achieved using MIP-based memories into a sensor signal. Therefore, the combination of a QCM and MIPs as synthetic receptors enhances the sensitivity through MIP process-based multiplexed binding sites using size, 3D-shape and chemical function having molecular memories of the prepared sensor system toward the target compound to be detected. This review aims to highlight and summarize the recent progress and studies in the field of (bio)sensor systems based on QCMs combined with molecular imprinting technology.
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Affiliation(s)
- Sibel Emir Diltemiz
- Chemistry Department, Faculty of Science, Anadolu University, 26470 Eskisehir, Turkey.
| | - Rüstem Keçili
- Department of Medical Services and Techniques, Yunus Emre Vocational School of Health Services, Anadolu University, 26470 Eskisehir, Turkey.
| | - Arzu Ersöz
- Chemistry Department, Faculty of Science, Anadolu University, 26470 Eskisehir, Turkey.
| | - Rıdvan Say
- Chemistry Department, Faculty of Science, Anadolu University, 26470 Eskisehir, Turkey.
- Bionkit Co. Ltd., 26470 Eskisehir, Turkey.
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Della Ventura B, Ambrosio A, Fierro A, Funari R, Gesuele F, Maddalena P, Mayer D, Pica Ciamarra M, Velotta R, Altucci C. Simple and Flexible Model for Laser-Driven Antibody-Gold Surface Interactions: Functionalization and Sensing. ACS APPLIED MATERIALS & INTERFACES 2016; 8:21762-21769. [PMID: 27456037 DOI: 10.1021/acsami.6b04449] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Interactions between biomolecules and between substrates and biomolecules is a crucial issue in physics and applications to topics such as biotechnology and organic electronics. The efficiency of bio- and mechanical sensors, of organic electronics systems, and of a number of other devices critically depends on how molecules are deposited on a surface so that these acquire specific functions. Here, we tackle this vast problem by developing a coarse grained model of biomolecules having a recognition function, such as antibodies, capable to quantitatively describe in a simple manner essential phenomena: antigen-antibody and antibody substrate interactions. The model is experimentally tested to reproduce the results of a benchmark case, such as (1) gold surface functionalization with antibodies and (2) antibody-antigen immune-recognition function. The agreement between experiments and model prediction is excellent, thus unveiling the mechanism for antibody immobilization onto metals at the nanoscale in various functionalization schemes. These results shed light on the geometrical packing properties of the deposited molecules, and may open the way to a novel coarse-grained based approach to describe other processes where molecular packing is a key issue with applications in a huge number of fields from nano- to biosciences.
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Affiliation(s)
| | - Antonio Ambrosio
- Harvard School of Engineering and Applied Sciences, Harvard University , 9 Oxford Street, Room 125, Cambridge, Massachussetts 02138, United States
| | | | | | | | | | - Dirk Mayer
- Peter Grünberg Institute (PGI-8) and Institute of Complex Systems (ICS-8), Forschungszentrum Jülich GmbH , 52428 Jülich, Germany
| | - Massimo Pica Ciamarra
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University , 637371 Singapore
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Bragazzi NL, Amicizia D, Panatto D, Tramalloni D, Valle I, Gasparini R. Quartz-Crystal Microbalance (QCM) for Public Health: An Overview of Its Applications. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2015; 101:149-211. [PMID: 26572979 DOI: 10.1016/bs.apcsb.2015.08.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Nanobiotechnologies, from the convergence of nanotechnology and molecular biology and postgenomics medicine, play a major role in the field of public health. This overview summarizes the potentiality of piezoelectric sensors, and in particular, of quartz-crystal microbalance (QCM), a physical nanogram-sensitive device. QCM enables the rapid, real time, on-site detection of pathogens with an enormous burden in public health, such as influenza and other respiratory viruses, hepatitis B virus (HBV), and drug-resistant bacteria, among others. Further, it allows to detect food allergens, food-borne pathogens, such as Escherichia coli and Salmonella typhimurium, and food chemical contaminants, as well as water-borne microorganisms and environmental contaminants. Moreover, QCM holds promises in early cancer detection and screening of new antiblastic drugs. Applications for monitoring biohazards, for assuring homeland security, and preventing bioterrorism are also discussed.
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Affiliation(s)
- Nicola Luigi Bragazzi
- Department of Health Sciences (DISSAL), Via Antonio Pastore 1, University of Genoa, Genoa, Italy
| | - Daniela Amicizia
- Department of Health Sciences (DISSAL), Via Antonio Pastore 1, University of Genoa, Genoa, Italy
| | - Donatella Panatto
- Department of Health Sciences (DISSAL), Via Antonio Pastore 1, University of Genoa, Genoa, Italy
| | - Daniela Tramalloni
- Department of Health Sciences (DISSAL), Via Antonio Pastore 1, University of Genoa, Genoa, Italy
| | - Ivana Valle
- SSD "Popolazione a rischio," Health Prevention Department, Local Health Unit ASL3 Genovese, Genoa, Italy
| | - Roberto Gasparini
- Department of Health Sciences (DISSAL), Via Antonio Pastore 1, University of Genoa, Genoa, Italy.
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8
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Detection of parathion and patulin by quartz-crystal microbalance functionalized by the photonics immobilization technique. Biosens Bioelectron 2015; 67:224-9. [DOI: 10.1016/j.bios.2014.08.020] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 07/28/2014] [Accepted: 08/08/2014] [Indexed: 11/24/2022]
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9
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Whitcombe MJ, Kirsch N, Nicholls IA. Molecular imprinting science and technology: a survey of the literature for the years 2004-2011. J Mol Recognit 2014; 27:297-401. [PMID: 24700625 DOI: 10.1002/jmr.2347] [Citation(s) in RCA: 275] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 10/28/2013] [Accepted: 12/01/2013] [Indexed: 12/11/2022]
Abstract
Herein, we present a survey of the literature covering the development of molecular imprinting science and technology over the years 2004-2011. In total, 3779 references to the original papers, reviews, edited volumes and monographs from this period are included, along with recently identified uncited materials from prior to 2004, which were omitted in the first instalment of this series covering the years 1930-2003. In the presentation of the assembled references, a section presenting reviews and monographs covering the area is followed by sections describing fundamental aspects of molecular imprinting including the development of novel polymer formats. Thereafter, literature describing efforts to apply these polymeric materials to a range of application areas is presented. Current trends and areas of rapid development are discussed.
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Xu Z, Deng P, Tang S, Kuang D, Zhang F, Li J. Preparation of 2D molecularly imprinted materials based on mesoporous silicas via click reaction. J Mater Chem B 2014; 2:8418-8426. [DOI: 10.1039/c4tb01217h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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11
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Catalá-Icardo M, López-Paz JL, Pérez-Plancha LM. Fast determination of thiacloprid by photoinduced chemiluminescence. APPLIED SPECTROSCOPY 2014; 68:642-648. [PMID: 25014719 DOI: 10.1366/13-07330] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A new and sensitive application of chemiluminescence detection has been developed for the determination of the pesticide thiacloprid in water. It was based on the on-line photoreaction of thiacloprid in a basic medium, with quinine acting as the sensitizer of the chemiluminescent response; cerium (IV) in sulfuric acid medium was used as the oxidant. High degrees of automation and reproducibility were achieved using a flow-injection analysis (FIA) manifold. The validation of the method was performed in terms of selectivity, linearity, limit of detection (LOD), precision, and accuracy. Liquid chromatography with ultraviolet (UV) detection was used as reference for mineral, tap, ground, and spring water samples. The proposed method is fast (with a throughput of 130 h(-1)), sensitive (LOD of 0.8 ng mL(-1) without preconcentration steps and of 0.08 ng mL(-1) with solid-phase extraction [SPE]), low cost, and possible to couple with separation methods for the simultaneous determination of other pesticides. The enhanced chemiluminescence intensity was linear with the thiacloprid concentration above the 2-80 and 80-800 ng mL(-1) ranges. A possible reaction mechanism is also discussed.
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Affiliation(s)
- Mónica Catalá-Icardo
- Universitat Politècnica de València, Instituto de Investigación para la Gestión Integrada de Zonas Costeras (IGIC), C/ Paranimf n°1, 46730 Grao de Gandía, Valencia, Spain
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12
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Zhang X, Du X, Huang X, Lv Z. Creating protein-imprinted self-assembled monolayers with multiple binding sites and biocompatible imprinted cavities. J Am Chem Soc 2013; 135:9248-51. [PMID: 23758432 DOI: 10.1021/ja402423r] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Imprinted monolayers have several advantages over bulk imprinted polymers such as excellent mass transfer of molecules into and out of imprinted sites and transduction of binding signals detected in real time. Protein-imprinted self-assembled monolayers (SAMs) were created with multiple binding sites and biocompatible imprinted cavities from functional thiols and novel disulfide compounds containing an oligoethylene glycol (OEG) terminal moiety and two amide groups incorporated in the chain (DHAP) in a biologically benign solution. DHAP played an important role in the formation of multiple binding sites and biocompatible cavities in addition to resisting nonspecific protein binding. The created protein-imprinted SAMs exhibited the excellent ability of specific binding of target proteins determined by multiple binding sites and imprinted cavities. The strategy generates tailor-made monolayer surfaces with specific protein binding and opens the possibility of controlled assembly of intellectual biomaterials and preparation of biosensors.
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Affiliation(s)
- Xianfeng Zhang
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People's Republic of China
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13
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Funari R, Della Ventura B, Schiavo L, Esposito R, Altucci C, Velotta R. Detection of Parathion Pesticide by Quartz Crystal Microbalance Functionalized with UV-Activated Antibodies. Anal Chem 2013; 85:6392-7. [DOI: 10.1021/ac400852c] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Riccardo Funari
- Department of Physics, Università di Napoli Federico II, Via Cintia,
26, Naples 80126, Italy
| | | | - Luigi Schiavo
- Department of Physics, Università di Napoli Federico II, Via Cintia,
26, Naples 80126, Italy
| | - Rosario Esposito
- Department of Physics, Università di Napoli Federico II, Via Cintia,
26, Naples 80126, Italy
| | - Carlo Altucci
- Department of Physics, Università di Napoli Federico II, Via Cintia,
26, Naples 80126, Italy
| | - Raffaele Velotta
- Department of Physics, Università di Napoli Federico II, Via Cintia,
26, Naples 80126, Italy
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Mirmohseni A, Houjaghan MR. Measurement of the pesticide methomyl by modified quartz crystal nanobalance with molecularly imprinted polymer. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2013; 48:278-284. [PMID: 23374046 DOI: 10.1080/03601234.2013.743779] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A simple and cost-effective analysis method based on quartz crystal nanobalance (QCN) coated with a molecularly imprinted polymer (MIP) for measurement of methomyl was investigated. In the first part of this study, a sensitive, selective and reliable quartz crystal nanobalance (QCN) sensor was designed for the selective determination of methomyl in aqueous solutions. In the second part, in order to demonstrate the applicability and performance of the fabricated sensor in the real world situation, it was successfully applied for the determination of methomyl residual in photo catalytic degradation by ZnO powders in aqueous solutions. The fabricated sensor presents a high selectivity and sensitivity (4.56 Hz per mg L(-1)) for methomyl and it can be used for determination of methomyl concentration ranged between 1 to 45 mg L(-1). Furthermore, good reproducibility, R.S.D. = 2.14% (n = 5) was observed. To investigate the performance of the sensor, the change in the insecticide concentration during the photocatalytic degradation of methomyl by ZnO was investigated by QCN and UV/Vis spectroscopy. Results obtained from QCN sensor and UV/Vis spectroscopy measurement are in good mutual agreement. So the fabricated sensor may provide an efficient, low cost, easy-to-use method for the in-field evaluation of specific targeted analytes in aqueous solutions which in turn may lead to improved food and water safety.
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Affiliation(s)
- A Mirmohseni
- Polymer Research Technology Laboratory, Applied Chemistry Department, University of Tabriz, Tabriz, Iran.
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Andreu V, Picó Y. Determination of currently used pesticides in biota. Anal Bioanal Chem 2012; 404:2659-81. [PMID: 22918537 DOI: 10.1007/s00216-012-6331-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2012] [Revised: 07/16/2012] [Accepted: 08/03/2012] [Indexed: 01/06/2023]
Abstract
Although pesticides enable control of the quantity and quality of farm products and food, and help to limit diseases in humans transmitted by insects and rodents, they are regarded as among the most dangerous environmental contaminants because of their tendency to bioaccumulate, and their mobility and long-term effects on living organisms. In the past decade, more analytical methods for accurate identification and quantitative determination of traces of pesticides in biota have been developed to improve our understanding of their risk to ecosystems and humans. Because sample preparation is often the rate-determining step in analysis of pesticides in biological samples, this review first discusses extraction and clean-up procedures, after a brief introduction to the classes, and the methods used in the analysis of pesticides in biota. The analytical methods, especially chromatographic techniques and immunoassay-based methods, are reviewed in detail, and their corresponding advantages, limitations, applications, and prospects are also discussed. This review mainly covers reports published since 2008 on methods for analysis of currently used pesticides in biota.
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Affiliation(s)
- Vicente Andreu
- Centro de Investigaciones sobre Desertificación -CIDE, Moncada, Valencia, Spain
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16
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Liu S, Zheng Z, Li X. Advances in pesticide biosensors: current status, challenges, and future perspectives. Anal Bioanal Chem 2012; 405:63-90. [DOI: 10.1007/s00216-012-6299-6] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Revised: 07/12/2012] [Accepted: 07/24/2012] [Indexed: 01/17/2023]
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17
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Oligopeptides functionalized surface plasmon resonance biosensors for detecting thiacloprid and imidacloprid. Biosens Bioelectron 2012; 35:271-276. [DOI: 10.1016/j.bios.2012.02.060] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2011] [Revised: 02/25/2012] [Accepted: 02/28/2012] [Indexed: 11/20/2022]
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Affiliation(s)
| | - David A. Spivak
- Department of Chemistry; Louisiana State University; Baton Rouge; LA; 70803; USA
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19
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Apodaca DC, Pernites RB, Ponnapati R, Del Mundo FR, Advincula RC. Electropolymerized Molecularly Imprinted Polymer Film: EIS Sensing of Bisphenol A. Macromolecules 2011. [DOI: 10.1021/ma2010525] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dahlia C. Apodaca
- Department of Chemistry and Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-5003, United States
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City Philippines 1101
| | - Roderick B. Pernites
- Department of Chemistry and Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-5003, United States
| | - Ramakrishna Ponnapati
- Department of Chemistry and Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-5003, United States
| | - Florian R. Del Mundo
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City Philippines 1101
| | - Rigoberto C. Advincula
- Department of Chemistry and Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-5003, United States
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City Philippines 1101
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20
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Becker B, Cooper MA. A survey of the 2006-2009 quartz crystal microbalance biosensor literature. J Mol Recognit 2011; 24:754-87. [DOI: 10.1002/jmr.1117] [Citation(s) in RCA: 138] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Apodaca DC, Pernites RB, Del Mundo FR, Advincula RC. Detection of 2,4-dinitrotoluene (DNT) as a model system for nitroaromatic compounds via molecularly imprinted short-alkyl-chain SAMs. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6768-6779. [PMID: 21534549 DOI: 10.1021/la105128q] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A 2-D molecularly imprinted monolayer (2-D MIM) approach was used to prepare a simple and robust sensor for nitroaromatic compounds with 2,4-dinitrotoluene (DNT) as the model compound, which is a precursor and analog for explosive 2,4,6-trinitrotoluene (TNT). In contrast to studies utilizing long-chain hexadecylmercaptan self-assembled monolayers (SAM)s for sensing, a shorter-chain alkylthiol (i.e., butanethiol SAM) was utilized for DNT detection. The role of the chain length of the coadsorbed alkylthiol was emphasized with a matched template during solution adsorption. Semiempirical PM3 quantum calculations were used to determine the molecular conformation and complexation of the adsorbates. A switching mechanism was invoked on the basis of the ability of the template analyte to alter the packing arrangement of the alkylthiol SAMs near defect sites as influenced by the DNT-ethanol solvent complex. A 2-D MIM was formed on the Au surface electrode of a quartz crystal microbalance (QCM), which was then used to sense various concentrations of the analyte. Interestingly, the 2-D MIM QCM also enabled the selective detection of DNT even in a mixed solution of competing molecules, demonstrating the selectivity figure of merit. Likewise, electrochemical impedance spectroscopy (EIS) data at different concentrations of DNT confirmed the 2-D MIM effectiveness for sensing based on the interfacial conformation and electron-transport properties of the imprinted butanethiol SAM.
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Affiliation(s)
- Dahlia C Apodaca
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
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22
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Apodaca DC, Pernites RB, Ponnapati RR, Del Mundo FR, Advincula RC. Electropolymerized molecularly imprinted polymer films of a bis-terthiophene dendron: folic acid quartz crystal microbalance sensing. ACS APPLIED MATERIALS & INTERFACES 2011; 3:191-203. [PMID: 21080660 DOI: 10.1021/am100805y] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A folic acid sensor was prepared via an electropolymerized molecularly imprinted polymer (E-MIP) film of a bis-terthiophene dendron on a quartz crystal microbalance (QCM). The cyclic voltammetry (CV) electrodeposition of the imprinted polymer film was monitored by electrochemical QCM or E-QCM, enabling in situ monitoring and characterization of E-MIP film formation and the viscoelastic behavior of the film. A key component of the E-MIP process is the use of a bifunctional monomer design to precomplex with the template and function as a cross-linker. The complex was electropolymerized and cross-linked by CV to form a polythiophene matrix. Stable cavities were formed that specifically fit the size and shape of the folic acid template. The same substrate surface was used for folic acid sensing. The predicted geometry of the 1:2 folic acid/terthiophene complex was obtained through semiempirical AM1 quantum calculations. The analytical performance, expressed through the figures of merit, of the sensor in aqueous solutions of the analyte was investigated. A relatively good linearity, R(2) = 0.985, was obtained within the concentration range 0-100 μM folic acid. The detection limit was found to be equal to 15.4 μM (6.8 μg). The relative cross selectivity of the folic acid imprinted polymer against the three molecules follows this trend: pteroic acid (= 50%) > caffeine (= 41%) > theophylline (= 6%). The potential and limitations of the E-MIP method were also discussed.
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Affiliation(s)
- Dahlia C Apodaca
- Department of Chemistry and Department of Chemical and Biomolecular Engineering, University of Houston , Houston, Texas 77204-5003, USA
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Whitcombe MJ, Chianella I, Larcombe L, Piletsky SA, Noble J, Porter R, Horgan A. The rational development of molecularly imprinted polymer-based sensors for protein detection. Chem Soc Rev 2011; 40:1547-71. [DOI: 10.1039/c0cs00049c] [Citation(s) in RCA: 569] [Impact Index Per Article: 43.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Bi X, Xu H, Lai SL, Yang KL. Bifunctional oligo(ethylene glycol) decorated surfaces which permit covalent protein immobilization and resist protein adsorption. BIOFOULING 2009; 25:435-444. [PMID: 19337888 DOI: 10.1080/08927010902875121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In this article, surface coatings derived from homo-bifunctional tri(ethylene glycol) (EG(3)) and hexa(ethylene glycol) (EG(6)) molecules which have two terminal aldehyde groups are reported. These homo-bifunctional molecules can be used to functionalize amine-terminated surfaces through crosslinking one aldehyde group to surface amine groups, while leaving the other aldehyde group available for covalent immobilization of proteins. Best of all, after reducing remaining aldehyde groups on the surface with a reducing agent, sodium borohydride, the surface becomes oligo(ethylene glycol) (OEG)-terminated. The OEG-terminated surface can resist nonspecific protein adsorption, a feature that is often required for many biosensors and biomedical devices. Although some mixed self-assembled monolayers formed from two different organothiols also permit covalent protein immobilization and resist nonspecific protein adsorption, the procedure reported herein requires only one type of homo-bifunctional molecule and can be applied to both silicon and gold surfaces.
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Affiliation(s)
- Xinyan Bi
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
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