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Agrahari S, Singh AK, Gautam RK, Tiwari I. Electrochemical oxidation and sensing of para benzoquinone using a novel SPE based disposable sensor. CHEMOSPHERE 2023; 342:140078. [PMID: 37714484 DOI: 10.1016/j.chemosphere.2023.140078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/31/2023] [Accepted: 09/04/2023] [Indexed: 09/17/2023]
Abstract
Para-benzoquinone (PBQ) is an emerging micro-contaminant owing to its chronic toxicity to plants and animals as well as its potential to induce cytotoxicity in primary rat hepatocytes and kidney cell injury. Hence, it is of utmost importance to monitor this contaminant in industrial wastewater and groundwater. In this article, we devised a unique disposable sensor that is based on a screen-printed electrode using MnO2@Co-Ni MOFs/fMWCNTs nanocomposite and is able to detect PBQ. The as-produced nanocomposite was prepared via ultrasonic assisted reflux condition and thoroughly examined by several physicochemical characterisation methods such as SEM, EDX, TEM, Raman, AFM, UV-visible, and FT-IR. Moreover, electrochemical methods like CV, DPV, EIS, and chronoamperometry were used for detecting PBQ on MnO2@Co-Ni MOFs/fMWCNTs/SPCE. Sensor performance has been investigated thoroughly and optimized to enhance the analytical potential of the fabricated sensor. DPV analysis was done on MnO2@Co-Ni MOFs/fMWCNTs that exhibit high selectivity, low peak potential, a broader linear detection range (0.005 mM-30 mM), and a LOD of 0.0027 ± 0.0005 mM. The designed electrode has shown remarkable reproducibility and excellent repeatability, with relative standard deviations of 0.12%, and 0.17%, respectively. Additionally, MnO2@Co-Ni MOFs/fMWCNTs/SPCE have been used to analyse PBQ in industrial wastewater samples, and the results have shown a significant level of recovery between 96.91 and 105.67%. Moreover, the PBQ sensor displays high applicability and was verified via the use of HPLC techniques. This disposable sensor is quick, easy, and cost-effective, so it can be useful in the future for analysing other phenolic contaminants present in environmental samples.
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Affiliation(s)
- Shreanshi Agrahari
- Department of Chemistry (Centre of Advanced Study), Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
| | - Ankit Kumar Singh
- Department of Chemistry (Centre of Advanced Study), Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
| | - Ravindra Kumar Gautam
- Department of Chemistry (Centre of Advanced Study), Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
| | - Ida Tiwari
- Department of Chemistry (Centre of Advanced Study), Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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Facile Synthesis of Silver-Doped Zinc Oxide Nanostructures as Efficient Scaffolds for Detection of p-Nitrophenol. CHEMOSENSORS 2020. [DOI: 10.3390/chemosensors8040108] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this paper, silver-doped zinc oxide nanoparticles were synthesized by using a solution combustion technique, in which zinc nitrate is used as an oxidizer and tartaric acid as a fuel. The phase composition, morphology and structural properties of the as-synthesized zinc oxide and silver-doped zinc oxide were established by using powdered X-ray diffraction, field emission scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy studies. Due to well-defined morphologies and crystallinity, the pure zinc oxide and silver-doped zinc oxide nanostructures can be used as efficient chemical sensors for the detection of p-nitrophenol (PNP). ZnO was found to show a low value of the limit of detection (LOD), i.e., 2.175 µM/L, for p-nitrophenol sensing; moreover, a sharp decrease in the limit of detection was observed with an increase in the concentration of silver ions, and the LOD value decreased to 0.669 µM/L for 10 mol % silver-doped zinc oxide. It is therefore concluded that Ag-doped ZnO shows a lower limit of detection as compared to pure ZnO for p-nitrophenol sensing.
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Crocomo PZ, Winiarski JP, Barros MR, Latocheski E, Nagurniak GR, Parreira RLT, Siebert DA, Micke GA, Magosso HA, Jost CL. Silver Nanoparticles‐Silsesquioxane Nanomaterial Applied to the Determination of 4‐Nitrophenol as a Biomarker. ELECTROANAL 2019. [DOI: 10.1002/elan.201900217] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Paola Zimmermann Crocomo
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | - João Paulo Winiarski
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | - Marília Reginato Barros
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | - Eloah Latocheski
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | | | - Renato Luis Tame Parreira
- Universidade de FrancaNúcleo de Pesquisas em Ciências Exatas e Tecnológicas 14404-600 Franca – SP Brazil
| | - Diogo Alexandre Siebert
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | - Gustavo Amadeu Micke
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | - Hérica Aparecida Magosso
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | - Cristiane Luisa Jost
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
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Miletić AS, Pecev-Marinković ET, Grahovac ZM, Pavlović AN, Tošić SB, Mišić IDR. Kinetic Spectrophotometric Method for 4-nitrophenol Determination in Drinking Water. JOURNAL OF ANALYTICAL CHEMISTRY 2019. [DOI: 10.1134/s1061934819060066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Nangia S, Warkar S, Katyal D. A review on environmental applications of chitosan biopolymeric hydrogel based composites. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2019. [DOI: 10.1080/10601325.2018.1526041] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Sakshi Nangia
- University School of Environment Management, Guru Gobind Singh Indraprastha University, New Delhi, India
| | - Sudhir Warkar
- Department of Applied Chemistry, Delhi Technological University, New Delhi, India
| | - Deeksha Katyal
- University School of Environment Management, Guru Gobind Singh Indraprastha University, New Delhi, India
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Balasubramanian P, Balamurugan TST, Chen SM, Chen TW. Simplistic synthesis of ultrafine CoMnO 3 nanosheets: An excellent electrocatalyst for highly sensitive detection of toxic 4-nitrophenol in environmental water samples. JOURNAL OF HAZARDOUS MATERIALS 2019; 361:123-133. [PMID: 30176410 DOI: 10.1016/j.jhazmat.2018.08.070] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 08/18/2018] [Accepted: 08/21/2018] [Indexed: 06/08/2023]
Abstract
Design and fabrication of cost effective analytical tools to monitor toxic organic emissions in eco system is of a great necessity. Nitrophenols are a class of widespread toxic organic pollutant lead to serious adverse effects in biosphere on its consumption. This article reports a high sensitive, cost effective, robust electrochemical sensor for 4-nitrophenol (4-NP) in environmental water samples. A novel sheet like CoMnO3 (CMO Ns) nanocatalyst was synthesized via oxalic acid assisted co-precipitation technique and employed as electrocatalyst for the high sensitive detection of 4-NP. The physiochemical properties of CMO Ns are studied in detail via XRD, FTIR, TEM, TGA, and XPS. TEM results reviled the protocol is an excellent way for synthesis of a uniformly distributed CMO Ns with lathery surface. Evident to the surface and other physiochemical studies the CMO Ns based sensor holds superior electrocatalytic activity towards 4-NP detection with excellent sensitivity (2.458 μA μM-1 cm-2) coupled with nanomolar detection (10 nm) limits. Moreover, the constructed sensor holds reliable long-term durability, good reproducibility, and excellent working stability. The practical applicability of the developed sensor was evaluated by determination of 4-NP in samples acquired from water resources with RSD ± 3.3%.
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Affiliation(s)
- Paramasivam Balasubramanian
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan, ROC
| | - T S T Balamurugan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan, ROC; Institute of Biochemical and Biomedical Engineering, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan, ROC
| | - 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, ROC.
| | - 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, ROC; Research and Development Center for Smart Textile Technology, National Taipei University of Technology, No. 1, Section 3, Zhongxiao East Road, Taipei, 106, Taiwan, ROC
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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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A highly sensitive electrochemical biosensor for phenol derivatives using a graphene oxide-modified tyrosinase electrode. Bioelectrochemistry 2018; 122:174-182. [PMID: 29656242 DOI: 10.1016/j.bioelechem.2018.04.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 04/04/2018] [Accepted: 04/06/2018] [Indexed: 12/22/2022]
Abstract
The fabrication, characterization and analytical performance were investigated for a phenol biosensor based on the covalent bonding of tyrosinase (TYR) onto a graphene oxide (GO)-modified glassy carbon electrode (GCE) via glutaraldehyde (GA). The surface morphology of the modified electrode was studied by atomic force microscope (AFM) and field-emission scanning electron microscopy (FE-SEM). The fabricated TYR/GA/GO/GCE biosensor showed very good stability, reproducibility, sensitivity and practical usage. The catechol biosensor exhibited a wide sensing linear range from 5×10-8M to 5×10-5M, a lower detection limit of 3×10-8M, a current maximum (Imax) of 65.8μA and an apparent Michaelis constant (Kmapp) of 169.9μM.
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Ngassa GBP, Fafard J, Detellier C. Preparation of Organophilic Nanohybrid Kaolinite and Application to the Electrochemical Detection of Organic Pesticide. ELECTROANAL 2017. [DOI: 10.1002/elan.201700412] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Guy B. P. Ngassa
- Laboratoire de Chimie Analytique, Faculté des Sciences; Université de Yaoundé 1, B. P.; 812 Yaoundé Cameroun
- Centre de Recherche en Catalyse et Innovation et Département de Chimie; Université d'Ottawa; 10 Marie Curie, K1 N6 N5 Ottawa (Ontario) Canada
| | - Jonathan Fafard
- Centre de Recherche en Catalyse et Innovation et Département de Chimie; Université d'Ottawa; 10 Marie Curie, K1 N6 N5 Ottawa (Ontario) Canada
| | - Christian Detellier
- Centre de Recherche en Catalyse et Innovation et Département de Chimie; Université d'Ottawa; 10 Marie Curie, K1 N6 N5 Ottawa (Ontario) Canada
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Thirumalraj B, Rajkumar C, Chen SM, Lin KY. Determination of 4-nitrophenol in water by use of a screen-printed carbon electrode modified with chitosan-crafted ZnO nanoneedles. J Colloid Interface Sci 2017; 499:83-92. [PMID: 28364718 DOI: 10.1016/j.jcis.2017.03.088] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 03/17/2017] [Accepted: 03/21/2017] [Indexed: 10/19/2022]
Abstract
The toxicity and environmental pollution by nitro aromatic compounds in water samples is the most recognized problem in worldwide. Hence, we have developed a simple and highly sensitive electrochemical method for the determination of 4-nitrophenol (4-NP) in water samples based on a chitosan (CHT) crafted zinc oxide nanoneedles (ZnO NDs) modified screen printed carbon electrode. The CHT/ZnO NDs were characterized by Field emission scanning electron microscope, Fourier transform infrared spectroscopy and X-ray diffraction technique. The CHT/ZnO NDs modified electrode showed an enhanced electrocatalytic activity and lower potential detection towards 4-NP, compared with other modified electrodes. Under optimum conditions, the differential pulse voltammetry (DPV) response of CHT/ZnO NDs modified electrode displayed a wide linear response range from 0.5 to 400.6μM towards the detection of 4-NP with a detection limit (LOD) of 0.23μM. The CHT/ZnO NDs modified electrode was used for specific and sensitive detection of 4-NP in presence of possible interfering species and common metal ions with long-term stability. In addition, the excellent analytical performance of the proposed sensor was successfully applied for determination of 4-NP in water samples.
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Affiliation(s)
- Balamurugan Thirumalraj
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Chellakannu Rajkumar
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Shen-Ming Chen
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
| | - Kuan-Yu Lin
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
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Kavanoz M, Pekmez NÖ, Can M. Investigation of the behavior of hydrogen-bonded phenolic compounds and their determination by using poly(vinylferrocenium)-polyaniline composite film. J Appl Polym Sci 2016. [DOI: 10.1002/app.43596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Muammer Kavanoz
- Department of Chemistry; Recep Tayyip Erdogan University; 53100 Rize Turkey
| | | | - Muzaffer Can
- Department of Chemistry; Kırıkkale University; 71450 Kırıkkale Turkey
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12
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Ngassa GB, Tonlé IK, Ngameni E. Square wave voltammetric detection by direct electroreduction of paranitrophenol (PNP) using an organosmectite film-modified glassy carbon electrode. Talanta 2016; 147:547-55. [DOI: 10.1016/j.talanta.2015.10.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Revised: 10/12/2015] [Accepted: 10/12/2015] [Indexed: 11/26/2022]
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13
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Peckova-Schwarzova K, Zima J, Barek J. Determination of Aromatic Hydrocarbons and Their Derivatives. ENVIRONMENTAL ANALYSIS BY ELECTROCHEMICAL SENSORS AND BIOSENSORS 2015. [DOI: 10.1007/978-1-4939-1301-5_11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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14
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Electrodeposition of Cobalt Oxide Nanostructure on the Glassy Carbon Electrode for Electrocatalytic Determination ofpara-Nitrophenol. ELECTROANAL 2014. [DOI: 10.1002/elan.201400386] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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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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16
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Thota R, Ganesh V. Chemically modified flexible strips as electrochemical biosensors. Analyst 2014; 139:4661-72. [DOI: 10.1039/c4an00646a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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17
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Bi W, Wang M, Yang X, Row KH. Facile synthesis of poly(ionic liquid)-bonded magnetic nanospheres as a high-performance sorbent for the pretreatment and determination of phenolic compounds in water samples. J Sep Sci 2014; 37:1632-9. [DOI: 10.1002/jssc.201400142] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 03/20/2014] [Accepted: 04/04/2014] [Indexed: 12/17/2022]
Affiliation(s)
- Wentao Bi
- Jiangsu Key Laboratory of Biomedical Materials; College of Chemistry and Materials Science; Nanjing Normal University; Nanjing China
| | - Man Wang
- Jiangsu Key Laboratory of Biomedical Materials; College of Chemistry and Materials Science; Nanjing Normal University; Nanjing China
| | - Xiaodi Yang
- Jiangsu Key Laboratory of Biomedical Materials; College of Chemistry and Materials Science; Nanjing Normal University; Nanjing China
| | - Kyung Ho Row
- Department of Chemistry and Chemical Engineering; Inha University; Nam-Ku Incheon Korea
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Rahman MM, Khan SB, Asiri AM, Al-Sehemi AG. Chemical sensor development based on polycrystalline gold electrode embedded low-dimensional Ag2O nanoparticles. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.08.164] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Umar A, Akhtar M, Dar G, Baskoutas S. Low-temperature synthesis of α-Fe2O3 hexagonal nanoparticles for environmental remediation and smart sensor applications. Talanta 2013; 116:1060-6. [DOI: 10.1016/j.talanta.2013.08.026] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 08/13/2013] [Accepted: 08/15/2013] [Indexed: 11/26/2022]
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Kawde AN, Morsy MA, Odewunmi N, Mahfouz W. From Electrode Surface Fouling to Sensitive Electroanalytical Determination of Phenols. ELECTROANAL 2013. [DOI: 10.1002/elan.201300101] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Rahman MM, Gruner G, Al-Ghamdi MS, Daous MA, Khan SB, Asiri AM. Chemo-sensors development based on low-dimensional codoped Mn2O3-ZnO nanoparticles using flat-silver electrodes. Chem Cent J 2013; 7:60. [PMID: 23537000 PMCID: PMC3630067 DOI: 10.1186/1752-153x-7-60] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Accepted: 03/19/2013] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Semiconductor doped nanostructure materials have attained considerable attention owing to their electronic, opto-electronic, para-magnetic, photo-catalysis, electro-chemical, mechanical behaviors and their potential applications in different research areas. Doped nanomaterials might be a promising owing to their high-specific surface-area, low-resistances, high-catalytic activity, attractive electro-chemical and optical properties. Nanomaterials are also scientifically significant transition metal-doped nanostructure materials owing to their extraordinary mechanical, optical, electrical, electronic, thermal, and magnetic characteristics. Recently, it has gained significant interest in manganese oxide doped-semiconductor materials in order to develop their physico-chemical behaviors and extend their efficient applications. It has not only investigated the basic of magnetism, but also has huge potential in scientific features such as magnetic materials, bio- & chemi-sensors, photo-catalysts, and absorbent nanomaterials. RESULTS The chemical sensor also displays the higher-sensitivity, reproducibility, long-term stability, and enhanced electrochemical responses. The calibration plot is linear (r2 = 0.977) over the 0.1 nM to 50.0 μM 4-nitrophenol concentration ranges. The sensitivity and detection limit is ~4.6667 μA cm-2 μM-1 and ~0.83 ± 0.2 nM (at a Signal-to-Noise-Ratio, SNR of 3) respectively. To best of our knowledge, this is the first report for detection of 4-nitrophenol chemical with doped Mn2O3-ZnO NPs using easy and reliable I-V technique in short response time. CONCLUSIONS As for the doped nanostructures, NPs are introduced a route to a new generation of toxic chemo-sensors, but a premeditate effort has to be applied for doped Mn2O3-ZnO NPs to be taken comprehensively for large-scale applications, and to achieve higher-potential density with accessible to individual chemo-sensors. In this report, it is also discussed the prospective utilization of Mn2O3-ZnO NPs on the basis of carcinogenic chemical sensing, which could also be applied for the detection of hazardous chemicals in ecological, environmental, and health care fields.
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Affiliation(s)
- Mohammed M Rahman
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P,O, Box 80203, Jeddah, 21589, Saudi Arabia.
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Hernandez SR, Kergaravat SV, Pividori MI. Enzymatic electrochemical detection coupled to multivariate calibration for the determination of phenolic compounds in environmental samples. Talanta 2013; 106:399-407. [DOI: 10.1016/j.talanta.2013.01.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 01/10/2013] [Accepted: 01/11/2013] [Indexed: 11/26/2022]
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Araújo TMR, Canela MC, Miranda PCML. Photochemical nitro-nitrite rearrangement in methyl parathion decay under tropical conditions. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2013; 48:251-259. [PMID: 23374042 DOI: 10.1080/03601234.2013.743750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
This work presents a study of the abiotic degradation of commercially available methyl parathion in aqueous solution at two different concentrations (88 mg/L and 200 μg/L). The effects of solar irradiation and the presence of humic acids were evaluated and revealed a synergistic response between them. The half-life of methyl parathion ranged from 4.9 to 37 days, and the experimental data also show that photochemical processes were the most relevant in this case. The only byproduct found in samples submitted to shadowed conditions was 4-nitrophenol. On the other hand, 4-nitrophenol, methyl paraoxon and a new degradation product (O,O-dimethyl O-p-hydroxyphenyl phosphorothioate) were detected when the samples were exposed directly to sunlight. This newly identified compound was prepared in the laboratory by thiophosphorylation of hydroquinone, and coelution experiments with authentic samples provided unambiguous confirmation of the presence of O,O-dimethyl O-p-hydroxy phenylphosphorothioate in samples.
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Hasanzadeh M, Shadjou N, Eskandani M, Guardia MDL. Mesoporous silica-based materials for use in electrochemical enzyme nanobiosensors. Trends Analyt Chem 2012. [DOI: 10.1016/j.trac.2012.06.007] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Li J, Kuang D, Feng Y, Zhang F, Xu Z, Liu M. A graphene oxide-based electrochemical sensor for sensitive determination of 4-nitrophenol. JOURNAL OF HAZARDOUS MATERIALS 2012; 201-202:250-9. [PMID: 22178284 DOI: 10.1016/j.jhazmat.2011.11.076] [Citation(s) in RCA: 261] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Revised: 11/07/2011] [Accepted: 11/23/2011] [Indexed: 05/06/2023]
Abstract
A graphene oxide (GO) film coated glassy carbon electrode (GCE) was fabricated for sensitive determination of 4-nitrophenol (4-NP). The GO-based sensor was characterized by scanning electron microscope, atomic force microscopy and electrochemical impedance spectroscopy. The electrochemical behaviors of 4-NP at the GO-film coated GCE were investigated in detail. In 0.1M acetate buffer with a pH of 4.8, 4-NP yields a very sensitive and well-defined reduction peak at the GO-modified GCE. It is found that the GO film exhibits obvious electrocatalytic activity toward the reduction of 4-NP since it not only increases the reduction peak current but also lowers the reduction overpotential. Based on this, an electrochemical method was proposed for the direct determination of 4-NP. Various kinetic parameters such as transfer electron number, transfer proton number and standard heterogeneous rate constant were calculated, and various experimental parameters were also optimized. Under the optimal conditions, the reduction peak current varies linearly with the concentration of 4-NP ranging from 0.1 to 120 μM, and the detection limit is 0.02 μM at the signal noise ratio of 3. Moreover, the fabricated sensor presented high selectivity and long-term stability. This electrochemical sensor was further applied to determine 4-NP in real water samples, and it showed great promise for simple, sensitive, and quantitative detection of 4-NP.
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Affiliation(s)
- Junhua Li
- Department of Chemistry and Material Science, Hengyang Normal University, Hengyang, 421008 Hunan, PR China.
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Electrochemical detection of phenolic compounds using composite film of multiwall carbon nanotube/surfactant/tyrosinase on a carbon paste electrode. J Solid State Electrochem 2011. [DOI: 10.1007/s10008-011-1355-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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Lin B, Yu Y, Hu X, Deng D, Zhu L, Wang W. Degradation mechanisms of phoxim in river water. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:312-321. [PMID: 21142082 DOI: 10.1021/jf1029459] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Degradation of phoxim in river water was fully explored in this paper. Effects of pH, temperature, and photoirradiation on the degradation were investigated in detail. The results indicated that the degradation was characterized by a first-order process; UV irradiation and the increase of pH and temperature substantially accelerated the degradation. To fully characterize the degradation mechanism, HPLC-MS/MS was utilized to identify the degradation intermediates. Five intermediates were identified as phoxom, phoxom dimer, O,O,O',O'-tetraethyldithiopyrophosphate, O,O,O'-triethyl-O'-2-hydroxyethyldisulfinylpyrophosphate, and O,O,O'-triethyl-O'-2-hydroxyethyldithiopyrophosphate. On the basis of the results of the intermediate analysis, the degradation pathways of phoxim under the present experimental conditions were proposed. Through conversion of a thiophosphoryl into a phosphoryl group, some phoxim was converted to phoxom, most of which further formed dimer. Another portion of phoxim transformed to O,O,O',O'-tetraethyldithiopyrophosphate via nucleophilic substitution and photolysis. Thereafter, O,O,O',O'-tetraethyldithiopyrophosphate underwent hydroxylation to form O,O,O'-triethyl-O'-2-hydroxyethyldithiopyrophosphate or sulfur oxidation first and then hydroxylation to produce O,O,O'-triethyl-O'-2-hydroxyethyldisulfinylpyrophosphate. The understanding of phoxim's degradation mechanism in this study will be critical to its safety assessment and increase the understanding of the fate of phoxim in environment water.
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Affiliation(s)
- Bixia Lin
- School of Chemistry and Environment, South China Normal University, Guangzhou, People's Republic of China
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28
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29
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Liu XY. A Novel Sensor Based on Electropolymerization Poly(safranine) Film Electrode for Voltammetric Determination of 4-Nitrophenol. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.5.1182] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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30
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Sensitive phenol determination based on co-modifying tyrosinase and palygorskite on glassy carbon electrode. Mikrochim Acta 2010. [DOI: 10.1007/s00604-010-0320-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Tan Y, Guo X, Zhang J, Kan J. Amperometric catechol biosensor based on polyaniline–polyphenol oxidase. Biosens Bioelectron 2010; 25:1681-7. [DOI: 10.1016/j.bios.2009.12.007] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2009] [Revised: 12/04/2009] [Accepted: 12/06/2009] [Indexed: 11/17/2022]
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32
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Weber J, Kurková R, Klánová J, Klán P, Halsall CJ. Photolytic degradation of methyl-parathion and fenitrothion in ice and water: implications for cold environments. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2009; 157:3308-3313. [PMID: 19540637 DOI: 10.1016/j.envpol.2009.05.045] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2009] [Revised: 05/19/2009] [Accepted: 05/21/2009] [Indexed: 05/27/2023]
Abstract
Here we investigate the photodegradation of structurally similar organophosphorus pesticides; methyl-parathion and fenitrothion in water (20 degrees C) and ice (-15 degrees C) under environmentally-relevant conditions with the aim of comparing these laboratory findings to limited field observations. Both compounds were found to be photolyzed more efficiently in ice than in aqueous solutions, with quantum yields of degradation being higher in ice than in water (fenitrothion > methyl-parathion). This rather surprising observation was attributed to the concentration effect caused by freezing the aqueous solutions. The major phototransformation products included the corresponding oxons (methyl-paraoxon and fenitroxon) and the nitrophenols (3-methyl-nitrophenol and nitrophenol) in both irradiated water and ice samples. The presence of oxons in ice following irradiation, demonstrates an additional formation mechanism of these toxicologically relevant compounds in cold environments, although further photodegradation of oxons in ice indicates that photochemistry of OPs might be an environmentally important sink in cold environments.
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Affiliation(s)
- Jan Weber
- Lancaster Environment Centre, Centre for Chemicals Management, Lancaster University, Lancaster LA1 4YQ, UK
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33
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Martínez Vidal J, Plaza-Bolaños P, Romero-González R, Garrido Frenich A. Determination of pesticide transformation products: A review of extraction and detection methods. J Chromatogr A 2009; 1216:6767-88. [DOI: 10.1016/j.chroma.2009.08.013] [Citation(s) in RCA: 130] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2009] [Revised: 07/30/2009] [Accepted: 08/07/2009] [Indexed: 11/27/2022]
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34
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Niaz A, Fischer J, Barek J, Yosypchuk B, Sirajuddin, Bhanger M. Voltammetric Determination of 4-Nitrophenol Using a Novel Type of Silver Amalgam Paste Electrode. ELECTROANAL 2009. [DOI: 10.1002/elan.200904622] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Weber J, Halsall CJ, Wargent JJ, Paul ND. The aqueous photodegradation of fenitrothion under various agricultural plastics: implications for pesticide longevity in agricultural 'micro-environments'. CHEMOSPHERE 2009; 76:147-150. [PMID: 19282019 DOI: 10.1016/j.chemosphere.2009.01.084] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2008] [Revised: 01/27/2009] [Accepted: 01/29/2009] [Indexed: 05/27/2023]
Abstract
Plastic cladding is increasingly used in agriculture to create micro-environments to improve crop yield/growth. Many of these plastics can alter the solar light spectrum by inhibiting or reducing the transmittance of certain parts of the solar spectrum. In this study, we investigated the aqueous photolysis of fenitrothion, under a selection of different plastic films commonly used in agriculture. Three different grades of polyethylene film were used: 'standard', 'transparent' and 'opaque'. The transmittance of light wavelengths in the UV region (290-400 nm), measured with a spectroradiometer, was found to decrease in the order of transparent>standard>opaque. Fenitrothion, an organophosphorothioate insecticide possesses molar absorptivity in the solar wavelength range of 290-400 nm. Aqueous first order degradation rate constants for fenitrothion determined over a 12 h period were found to be considerably less for those experiments conducted under the standard and opaque plastic films, compared to the transparent film and no-film control. The experiments were conducted in an Atlas Suntest solar simulator using a UV-filtered Xenon arc lamp to simulate sunlight. The first order half-life for fenitrothion was 100 and 250 h under the standard and opaque films, respectively, compared to approximately 10 h for the transparent film and no-film experiments. Our results suggest that pesticide longevity could be greatly extended within these plastic micro-environments, especially for those chemicals which may degrade/transform via photolytic or photochemical pathways.
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Affiliation(s)
- Jan Weber
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
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36
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Zhao X, Hwang HM. A study of the degradation of organophosphorus pesticides in river waters and the identification of their degradation products by chromatography coupled with mass spectrometry. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2009; 56:646-653. [PMID: 18752016 DOI: 10.1007/s00244-008-9220-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2008] [Accepted: 08/04/2008] [Indexed: 05/26/2023]
Abstract
The degradation of selected organophosphorus pesticides (OPs), i.e., malathion and parathion, in river water, has been studied with solar simulator irradiation. The degradation of OPs and formation of degradation products were determined by chromatography coupled with mass spectrometry analysis. The effect of a photosensitizer, i.e., riboflavin, on the photolysis of OPs in a river-water environment was examined. There was no significant increase in the degradation rate in the presence of the photosensitizer. Degradation products of the OPs were identified with gas chromatography coupled with mass spectrometry (GC-MS) after derivatization by pentafluorobenzyl bromide (PFBB) and with high-performance liquid chromatography-mass spectrometry (HPLC-MS) with electrospray (ESI) or atomospheric pressure chemical ionization (APCI). Malaoxon, paraoxon, 4-nitrophenol, aminoparathion, O,O-dimethylthiophosphoric acid, and O,O-dimethyldithiophosphoric acid, have been separated and identified as the degradation products of malathion and parathion after photolysis in river water. Based on the identified transformation products, a rational degradation pathway in river water for both OPs is proposed. The identities of these products can be used to evaluate the toxic effects of the OPs and their transformation products on natural environments.
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Affiliation(s)
- Xueheng Zhao
- Department of Biology, Jackson State University, Jackson, MS 39217, USA
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37
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Hu JY, Liu C, Zhang YC, Zheng ZX. Hydrolysis and photolysis of diacylhydrazines-type insect growth regulator JS-118 in aqueous solutions under abiotic conditions. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2009; 82:610-615. [PMID: 19165405 DOI: 10.1007/s00128-009-9654-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2008] [Accepted: 01/09/2009] [Indexed: 05/27/2023]
Abstract
JS-118 is a diacylhydrazines-type insect growth regulator which is now used extensively in China. The hydrolysis and photolysis of the pesticide JS-118 in aqueous solutions have been assessed under natural and controlled conditions in this project. Hydrolysis experimental results show that JS-118 is quite stable in aqueous solutions in dark, with no significant variations be observed in degradation under various conditions. Abiotic hydrolysis is relatively unimportant compared to photolysis. The rate of photodecomposition of JS-118 in aqueous solutions follows first-order kinetics both in UV radiation and natural sunlight. The degradation rates are faster under UV light than sunlight, with the half-lives (t (1/2) = ln2/k) of 6.00-10.85 min and 6.63-10.16 day, respectively. Under UV light, two major photoproducts are detected, and tentatively identified according to HPLC-MS spectral information as N-t-butyl-N-(3,5-dimethylbenzoyl) and 3,7-dimethyl-benzoatedihydrofuran. The corresponding photolysis pathways of JS-118 are also proposed. The results obtained indicate that direct photoreaction is an important dissipation pathway of JS-118 in natural water systems.
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Affiliation(s)
- J-Y Hu
- School of Applied Science, University of Science and Technology Beijing, 100083, Beijing, China.
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38
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Weber J, Halsall CJ, Wargent JJ, Paul ND. A comparative study on the aqueous photodegradation of two organophosphorus pesticides under simulated and natural sunlight. ACTA ACUST UNITED AC 2009; 11:654-9. [DOI: 10.1039/b811387d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Wang Y, Hasebe Y. Highly sensitive flow-biosensor for toxic phenolic compounds using tyrosinase and acridine orange-adsorbed carbon felt. J Environ Sci (China) 2009; 21 Suppl 1:S100-S104. [PMID: 25084402 DOI: 10.1016/s1001-0742(09)60048-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Tyrosinase (TYR, EC 1.14.18.1) was physically adsorbed onto a carbon felt (CF) together with acridine orange (AO). Coadsorption of AO was essential to prevent the denaturation of the TYR at the CF surface. The resulting TYR and AO-coadsorbed CF (TYR/AO-CF) was successfully utilized as a detection unit of novel and highly sensitive amperometric flow-biosensor for toxic chlorophenol compounds. Standard solutions of phenolic compounds (200 μL) were injected, and the cathodic peak currents due to the reduction current of o-quinones produced by the TYR-catalyzed oxidation (phenolase activity) were detected at the applied potential of -50 mV vs. Ag/AgCl. In this reaction, the electrochemically generated catechol compounds from o-quinones are re-oxidized repeatedly by catecholase activity of the TYR, leading to a sufficient amplified signal. The TYR/AO-CF exhibited much higher selectivity toward p-chlorophenol as compared with other chlorophenol compounds. When 0.1 mol/L phosphate buffer (pH 7.0) was used as a carrier at flow rate of 3.0 mL/min, cathodic peaks for p-chlorophenol was linear in the concentration range between 0.1 and 10 μmol/L (sensitivity: 1.41(mA·L)/mmol) with sampling rate (30 samples/h), and the detection limit of p-chlorophenol was found to be 2.13 × 10(8) mol/L (S/N = 3. The ratio of signal and noise is 3). The TYR/AO-CF kept more than 80% of original activity after the storage in 0.1 mol/L phosphate buffer (pH 7.0) containing 0.2 mmol/L AO at 4°C.
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Affiliation(s)
- Yue Wang
- Department of Material Science and Engineering, Saitama Institute of Technology, Fukaya 369-0293, Japan; School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114501, China
| | - Yasushi Hasebe
- Department of Material Science and Engineering, Saitama Institute of Technology, Fukaya 369-0293, Japan; Department of Life Science and Green Chemistry, Saitama Institute of Technology, Fukaya 369-0293, Japan
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40
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Kong L, Huang S, Yue Z, Peng B, Li M, Zhang J. Sensitive mediator-free tyrosinase biosensor for the determination of 2,4-dichlorophenol. Mikrochim Acta 2008. [DOI: 10.1007/s00604-008-0121-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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41
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Küster E, Altenburger R. Comparison of cholin- and carboxylesterase enzyme inhibition and visible effects in the zebra fish embryo bioassay under short-term paraoxon-methyl exposure. Biomarkers 2008; 11:341-54. [PMID: 16908441 DOI: 10.1080/13547500600742136] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The acute zebra fish embryo test (Danio rerio Hamilton-Buchanan, 1822) is an accepted bioassay to assess the toxicity of waste water that may be used for the replacement of testing with adult fish. It is also suggested for chemical hazard characterization and assessment, although only a few groups of substances have yet been studied. Specifically acting substances such as neurotoxic insecticides pose a potentially hazard for non-target fish. To establish whether the proposed zebra fish embryo test protocol and the inhibition of cholinesterases (acetylcholinesterase EC 3.1.1.7, propionylcholinesterase EC 3.1.1.8) and carboxylesterase (EC 3.1.1.1) enzymes can be used in a similar fashion for hazard characterization and risk assessment of chemicals and environmental samples, two types of experiments were conducted. Visual effects of exposure to the organophosphate metabolite paraoxon-methyl after 24 and 48 h in the zebra fish embryo test system were analysed with the use of an inverse microscope (rate of mortality, developmental disturbances, heart rate and others). The inhibition to cholinesterases and carboxylesterase was also measured. Enzyme inhibition as a biomarker of exposure was about 70 times more sensitive than the effects in the zebra fish embryo test with an IC50 below 1.2 micromol compared with an EC50 of 91 micromol. The dose-response relationships showed different curve characteristics with a linear increase of enzyme inhibition compared with a sigmoidal curve for the overt effects. Significant overt effects could only be seen at concentrations at which already 80% of the activities of the different esterases were inhibited.
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Affiliation(s)
- E Küster
- Department of Chemical Ecotoxicology, UFZ-Centre for Environmental Research Leipzig-Halle in the Helmholtz Association, Leipzig, Germany.
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42
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Zayed SMAD, Mahdy F. Decomposition of 14C-fenitrothion under the influence of UV and sunlight under tropical and subtropical conditions. CHEMOSPHERE 2008; 70:1653-9. [PMID: 17822740 DOI: 10.1016/j.chemosphere.2007.07.063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2007] [Revised: 07/25/2007] [Accepted: 07/25/2007] [Indexed: 05/17/2023]
Abstract
The decomposition of (14)C-fenitrothion on silica gel chromatoplates as well as in polar and non polar solvents under sunlight and ultraviolet light was investigated, Its stability to sunlight on leaf surfaces of bean plants and on different surfaces (such as glass, quartz and plastic) was also determined. The main photoproducts were identified as carboxyfenitrothion, fenitrooxon, carboxyfenitrooxon and 3-methyl-4-nitrophenol and a small amount 3-caboxy-4-nitrophenol and methyl parathion. The addition of carbaryl and deltamethrin insecticides slightly accelerated the photodecomposition of fenitrothion on silica gel plates and in solution.
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Affiliation(s)
- S M A D Zayed
- Department of Applied Organic Chemistry, National Research Centre, Dokki, Cairo, Egypt
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43
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McLellan I, Carvalho M, Silva Pereira C, Hursthouse A, Morrison C, Tatner P, Martins I, San Romão MV, Leitão M. The environmental behaviour of polychlorinated phenols and its relevance to cork forest ecosystems: a review. ACTA ACUST UNITED AC 2007; 9:1055-63. [PMID: 17909638 DOI: 10.1039/b701436h] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pentachlorophenol (PCP) has been used as a herbicide, biocide and preservative worldwide since the 1930s and as a result, extensive and prolonged contamination exists. The environmental impact increases when its many degradation products are taken into consideration. A number of chloroanisols and their related chlorophenols have been found in cork slabs collected from Portuguese oak tree forests before stopper manufacturing, and contamination by PCP and polychlorinated anisole (PCA) has been detected in Canadian forests. It is suggested that the use of polychlorinated phenols, in particular PCP, is thought to be a cause of the cork taint problem in wine, a major socio-economic impact not only for industry but on sensitive and highly biodiverse ecosystems. It also highlights particular issues relating to the regional regulation of potentially toxic chemicals and global economics world wide. To fully understand the impact of contamination sources, the mechanisms responsible for the fate and transport of PCP and its degradation products and assessment of their environmental behaviour is required. This review looks at the current state of knowledge of soil sorption, fate and bioavailability and identifies the challenges of degradation product identification and the contradictory evidence from field and laboratory observations. The need for a systematic evaluation of PCP contamination in relation to cork forest ecosystems and transfer of PCP between trophic levels is emphasised by discrepancies in bioaccumulation and toxicity. This is essential to enable long term management of not only transboundary contaminants, but also the sustainable management of socially and economically important forest ecosystems.
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Affiliation(s)
- Iain McLellan
- School of Engineering and Science, University of Paisley, Paisley, UK ,PA1 2BE
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44
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Liu J, Wang L, Zheng L, Wang X, Lee FSC. Analysis of bacteria degradation products of methyl parathion by liquid chromatography/electrospray time-of-flight mass spectrometry and gas chromatography/mass spectrometry. J Chromatogr A 2006; 1137:180-7. [PMID: 17126847 DOI: 10.1016/j.chroma.2006.10.091] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2006] [Revised: 07/31/2006] [Accepted: 10/06/2006] [Indexed: 11/22/2022]
Abstract
The biodegradation of the organophosphorus insecticide methyl parathion (MP) in aqueous environment by bacteria isolated from river sediment has been studied. Two species of bacteria which show strong MP degradation ability are identified as Shewanella and Vibrio parahaemolyticus. The biodegradation of MP proceeded rapidly with the formation of a series of intermediate products, which were analyzed using a combination of GC/MS and HPLC/ESI-TOFMS techniques. The major products tentatively identified include a series of reduced products of MP. Results demonstrate that the coupling of TOFMS to HPLC enhances further the capability of LC-MS in the identification of polar organic species in complex environmental samples. Degradation pathways leading to the formation of these products are proposed which involves first the reduction of nitro to amino group in MP, followed by combination with some intrinsic matters of bacteria. The mechanism and products from biodegradation are quite different from those of photocatalytic process for which the main intermediates included methyl paraoxon and 4-nitrophenol.
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Affiliation(s)
- Jie Liu
- Department of Chemistry and The Key Laboratory of Analytical Science of MOE, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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45
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Hervás Pérez JP, Sánchez-Paniagua López M, López-Cabarcos E, López-Ruiz B. Amperometric tyrosinase biosensor based on polyacrylamide microgels. Biosens Bioelectron 2006; 22:429-39. [PMID: 16806888 DOI: 10.1016/j.bios.2006.05.015] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2005] [Indexed: 11/24/2022]
Abstract
An amperometric enzyme sensor using tyrosinase (PPO) entrapped in polyacrylamide microgels has been developed for determination of phenolic compounds. Polyacrylamide microgels were obtained by the concentrated emulsion polymerization method. The crosslinking of the polymer matrix optimum to retain the enzyme and to allow the diffusion of the compounds involved in the enzyme reaction has been studied (4.0%) as well as the influence on the response of analytical parameters such as pH, temperature, enzyme load and working potential. The useful lifetime of the biosensor was 27 days and it was useful to determine monophenolics compounds (e.g. cresol, chlorophenol) and diphenolics compounds (e.g. catechol and dopamine) by amperometric measurements at -100mV (versus SCE) in a batch system. The results showed that the substrate structures have a great influence on the sensor response.
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Affiliation(s)
- J P Hervás Pérez
- Departamento de Química Analítica, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
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46
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Matsushita T, Matsui Y, Matsui Y. Estimating mutagenic compounds generated during photolysis of fenitrothion--by HPLC fractionation followed by mutagenicity testing and high-resolution GC-MS analysis. CHEMOSPHERE 2006; 64:144-51. [PMID: 16330078 DOI: 10.1016/j.chemosphere.2005.10.046] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2005] [Revised: 08/17/2005] [Accepted: 10/23/2005] [Indexed: 05/05/2023]
Abstract
We aimed to: (1) evaluate the change in mutagenicity of a fenitrothion-containing solution during photolysis and (2) elucidate mutagenic compounds that were possible major contributors to mutagenicity. A batch test involving irradiation by natural sunlight was conducted on the solution, and then HPLC fractionation, mutagenicity testing, and gas chromatography-mass spectrometry (GC-MS) analysis were performed on the irradiated solution. During the 15-day photolysis, fenitrothion was almost completely decomposed, and 34 transformed products (TPs) were generated. Photolysis decreased the mutagenicity of the fenitrothion-containing solution for base-pair-substitution-detecting tester strains (YG1026 and YG1029) but increased mutagenicity for frameshift-detecting tester strains (YG1021 and YG1024). One TP was identified as a potential source of the increased mutagenicity; its molecular formula was estimated to be (CH(3)O)(2)PS-O-C(8)H(6)NO.
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Affiliation(s)
- Taku Matsushita
- Department of Civil Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
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47
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Chen JC, Shih JL, Liu CH, Kuo MY, Zen JM. Disposable Electrochemical Sensor for Determination of Nitroaromatic Compounds by a Single-Run Approach. Anal Chem 2006; 78:3752-7. [PMID: 16737233 DOI: 10.1021/ac060002n] [Citation(s) in RCA: 103] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Environmental and security applications have generated major demands for effective field-deployable tools for detecting nitroaromatic compounds, such as chloramphenicol (an antibiotic), parathion (an organophosphate nerve agent), and TNT (2,4,6-trinitrotoluene, an explosive) in a fast, simple, sensitive, reliable, and cost-effective manner. We report here a single-run approach for such a purpose. The reduction potential of different nitroaromatic compounds was found to systematically shift with the substituent group at an electrochemically preanodized screen-printed carbon electrode. The preanodization treatment makes the peak sharp and hence provides a precise way to identify the substituent effect on nitroaromatic compounds. By using potential shifts as analytical characteristics of nitroaromatic compounds, a suitable internal standard can be chosen based on the criteria of well-separated peak potential and rarely found in the real sample of interest. Simply by measuring the ratio of peak currents between analytes of interest and internal standard, the analysis can be done in a single-run measurement. Both the matrix effect and the variation of electrode during the preparation process can be canceled out in this approach and thus allows for a high-precision analysis. Just by placing a 20-microL drop on a single-use amperometric sensor strip incorporating a three-electrode configuration is enough for rapid and sensitive detection of nitroaromatic compounds by square-wave voltammetry. For example, the linear detection range can be up to 100 microM with a detection limit of 0.42 microM (S/N = 3) in the detection of chloramphenicol. This approach was successfully demonstrated in real sample analysis to verify the applicability of the method. The promising performances open new possibilities for rapid determination of nitroaromatic compounds in environmental and biological samples.
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Affiliation(s)
- Jyh-Cheng Chen
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
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48
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Li C. Construction of a novel sensor based on electropolymerization of carmine for voltammetric determination of 4-nitrophenol. J Appl Polym Sci 2006. [DOI: 10.1002/app.25489] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Li N, Xue MH, Yao H, Zhu JJ. Reagentless biosensor for phenolic compounds based on tyrosinase entrapped within gelatine film. Anal Bioanal Chem 2005; 383:1127-32. [PMID: 16237545 DOI: 10.1007/s00216-005-0115-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2005] [Revised: 09/09/2005] [Accepted: 09/13/2005] [Indexed: 10/25/2022]
Abstract
A simple and new reagentless phenolic compound biosensor was constructed with tyrosinase immobilized in the gelatine matrix cross-linked with formaldehyde. The morphologies of gelatine and gelatine/tryosinase were characterized by SEM. The tyrosinase retains its bioactivity when being immobilized by the gelatine film. Phenolic compounds were determined by the direct reduction of biocatalytically liberated quinone at -0.1 V vs SCE. The process parameters for the fabrication of the enzyme electrode were studied. Optimization of the experimental parameters has been performed with regard to pH, operating potential, temperature and storage stability. This biosensor exhibits a fast amperometric response to phenolic compounds. The linear range for catechol, phenol, and p-Cresol determination was from 5 x 10(-8) to 1.4 x 10(-4) M, 5 x 10(-8) to 7.1 x 10(-5)M, and 1 x 10(-7) to 3.6 x 10(-5)M, with a detection limit of 2.1 x 10(-8) M, 1.5 x 10(-8) M, and 7.1 x 10(-8 )M, respectively. The enzyme electrode retained ca.77% of its activity after 7 days of storage at 4 degrees C in a dry state. The proposed sensor presented good repeatability, evaluated in terms of relative standard deviation (R.S.D.=8.6%) for eight different biosensors and was applied for determination in water sample. The recovery for the sample was from 99.0% to 99.8%.
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Affiliation(s)
- Nan Li
- Department of Chemistry, Lab of Life Analytical Chemistry, Nanjing University, Nanjing, 210093, PR China.
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Dai Z, Xu X, Wu L, Ju H. Detection of Trace Phenol Based on Mesoporous Silica Derived Tyrosinase-Peroxidase Biosensor. ELECTROANAL 2005. [DOI: 10.1002/elan.200403256] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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