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Soni H, Verma N, Chaudhari DY, Gandhi SA, Pandya A, Sutariya PG. Construction of coumarin-appended calix[4]arene-based fluorescence sensor for the detection of carbofuran in cabbage. Anal Methods 2024; 16:2400-2411. [PMID: 38572632 DOI: 10.1039/d4ay00030g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
This study presents a novel approach for the detection of carbofuran (CBF) insecticide by systematically exploring a calix[4]arene-derived fluorescence probe, CouC4S, functionalized with two coumarin-labelled cystamine linkages at the narrow edge of the calix[4]arene platform. The proposed method showed a fluorescence "signal - off" effect when CBF binds with CouC4S by quenching the fluorescence intensity of CouC4S. Its limit of detection was as low as 5.55 μM according to the emission study. The working concentration range for this ligand was observed to be up to 5-65 μM. This method could be applied for the on-spot detection of CBF in real samples such as cabbage by spiking CBFvia in situ experiments, which exhibited a limit of detection of 8.823 ppm. For the further confirmation of CouC4S:CBF binding, cyclic voltammetry, differential pulse voltammetry, powder X-ray diffraction, FT-IR spectroscopy, 1H NMR titration, MALDI-TOF and computational investigations were carried out.
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Affiliation(s)
- Heni Soni
- Department of Chemistry, Sardar Patel University, V.V. Nagar, 388120, Gujarat, India.
| | - Nidhi Verma
- Department of Biotechnology and Bioengineering, Institute of Advanced Research, Gandhinagar, Gujarat 382426, India
| | - Divyesh Y Chaudhari
- Bhavan's Shri Ishvarbhai L. Pandya Arts-Sc. & Jashodaben Shah Commerce College, Dakor, 388225, Gujarat, India
| | - Sahaj A Gandhi
- Bhavan's Shri Ishvarbhai L. Pandya Arts-Sc. & Jashodaben Shah Commerce College, Dakor, 388225, Gujarat, India
| | - Alok Pandya
- Department of Biotechnology and Bioengineering, Institute of Advanced Research, Gandhinagar, Gujarat 382426, India
| | - Pinkesh G Sutariya
- Department of Chemistry, Sardar Patel University, V.V. Nagar, 388120, Gujarat, India.
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Zahedifar P, Pazdur L, Vande Velde CML, Billen P. Multistage Chemical Recycling of Polyurethanes and Dicarbamates: A Glycolysis–Hydrolysis Demonstration. Sustainability 2021; 13:3583. [DOI: 10.3390/su13063583] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The use of polyurethanes and, therefore, the quantity of its scrap are increasing. Considering the thermoset characteristic of most polyurethanes, the most circular recycling method is by means of chemical depolymerization, for which glycolysis is finding its way into the industry. The main goal of polyurethane glycolysis is to recover the polyols used, but only limited attempts were made toward recovering the aromatic dicarbamate residues and derivates from the used isocyanates. By the split-phase glycolysis method, the recovered polyols form a top-layer phase and the bottom layer contain transreacted carbamates, excess glycol, amines, urea, and other side products. The hydrolysis of carbamates results in amines and CO2 as the main products. Consequently, the carbamates in the bottom layer of polyurethane split-phase glycolysis can also be hydrolyzed in a separate process, generating amines, which can serve as feedstock for isocyanate production to complete the polyurethane material cycle. In this paper, the full recycling of polyurethanes is reviewed and experimentally studied. As a matter of demonstration, combined glycolysis and hydrolysis led to an amine production yield of about 30% for model systems. With this result, we show the high potential for further research by future optimization of reaction conditions and catalysis.
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Zhang X, Lin J, Chen Y, Lin C, Lin X, Liu S, Xie Z. Sensitive amperometric detection for capillary electrophoresis of phenol carbamates with in‐line thermal hydrolysis strategy. Electrophoresis 2019; 40:1648-55. [DOI: 10.1002/elps.201800484] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 03/24/2019] [Accepted: 03/26/2019] [Indexed: 12/17/2022]
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Ghoraba Z, Aibaghi B, Soleymanpour A. Ultrasound-assisted dispersive liquid-liquid microextraction followed by ion mobility spectrometry for the simultaneous determination of bendiocarb and azinphos-ethyl in water, soil, food and beverage samples. Ecotoxicol Environ Saf 2018; 165:459-466. [PMID: 30218969 DOI: 10.1016/j.ecoenv.2018.09.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 08/07/2018] [Accepted: 09/03/2018] [Indexed: 06/08/2023]
Abstract
A sensitive and fast ultrasound-assisted dispersive liquid-liquid microextraction procedure combined with ion mobility spectrometry has been developed for the simultaneous extraction and determination of bendiocarb and azinphos-ethyl. Experimental parameters affecting the analytical performance of the method were optimized: type and volume of extraction solvent (chloroform, 150 µL), pH (9.0), type and volume of buffer (ammonium buffer pH = 9.0, 4.5 mL) and extraction time (3.0 min). Under optimum conditions, the linearity was found to be in the range of 2-40 and 6-100 ng/mL and the limits of detection (LOD) were 1.04 and 1.31 ng/mL for bendiocarb and azinphos-ethyl, respectively. The method was successfully validated for the analysis of bendiocarb and azinphos-ethyl in different samples such as waters, soil, food and beverage samples.
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Affiliation(s)
- Zahra Ghoraba
- School of Chemistry, Damghan University, Damghan 3671641167, Iran
| | - Behzad Aibaghi
- School of Chemistry, Damghan University, Damghan 3671641167, Iran.
| | - Ahmad Soleymanpour
- School of Chemistry, Damghan University, Damghan 3671641167, Iran; Institute of Biological Science, Damghan University, Damghan 3671641167, Iran
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Amatatongchai M, Sroysee W, Jarujamrus P, Nacapricha D, Lieberzeit PA. Selective amperometric flow-injection analysis of carbofuran using a molecularly-imprinted polymer and gold-coated-magnetite modified carbon nanotube-paste electrode. Talanta 2018; 179:700-9. [DOI: 10.1016/j.talanta.2017.11.064] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 11/21/2017] [Accepted: 11/28/2017] [Indexed: 01/28/2023]
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Della Pelle F, Del Carlo M, Sergi M, Compagnone D, Escarpa A. Press-transferred carbon black nanoparticles on board of microfluidic chips for rapid and sensitive amperometric determination of phenyl carbamate pesticides in environmental samples. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1964-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bol’shakova DS, Amelin VG. Determination of pesticides in environmental materials and food products by capillary electrophoresis. J Anal Chem 2016. [DOI: 10.1134/s1061934816100026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Santaladchaiyakit Y, Srijaranai S, Burakham R. Methodological aspects of sample preparation for the determination of carbamate residues: A review. J Sep Sci 2012; 35:2373-89. [DOI: 10.1002/jssc.201200431] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yanawath Santaladchaiyakit
- Department of Chemistry; Faculty of Engineering; Rajamangala University of Technology Isan; KhonKaen Thailand
| | - Supalax Srijaranai
- Materials Chemistry Research Unit; Department of Chemistry and Center of Excellence for Innovation in Chemistry; Faculty of Science, KhonKaen University; KhonKaen Thailand
| | - Rodjana Burakham
- Materials Chemistry Research Unit; Department of Chemistry and Center of Excellence for Innovation in Chemistry; Faculty of Science, KhonKaen University; KhonKaen Thailand
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Mark JJP, Scholz R, Matysik FM. Electrochemical methods in conjunction with capillary and microchip electrophoresis. J Chromatogr A 2012; 1267:45-64. [PMID: 22824222 DOI: 10.1016/j.chroma.2012.07.009] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 07/01/2012] [Accepted: 07/06/2012] [Indexed: 02/06/2023]
Abstract
Electromigrative techniques such as capillary and microchip electrophoresis (CE and MCE) are inherently associated with various electrochemical phenomena. The electrolytic processes occurring in the buffer reservoirs have to be considered for a proper design of miniaturized electrophoretic systems and a suitable selection of buffer composition. In addition, the control of the electroosmotic flow plays a crucial role for the optimization of CE/MCE separations. Electroanalytical methods have significant importance in the field of detection in conjunction with CE/MCE. At present, amperometric detection and contactless conductivity detection are the predominating electrochemical detection methods for CE/MCE. This paper reviews the most recent trends in the field of electrochemical detection coupled to CE/MCE. The emphasis is on methodical developments and new applications that have been published over the past five years. A rather new way for the implementation of electrochemical methods into CE systems is the concept of electrochemically assisted injection which involves the electrochemical conversions of analytes during the injection step. This approach is particularly attractive in hyphenation to mass spectrometry (MS) as it widens the range of CE-MS applications. An overview of recent developments of electrochemically assisted injection coupled to CE is presented.
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Affiliation(s)
- Jonas J P Mark
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Regensburg, Germany
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Santalad A, Zhou L, Shang F, Fitzpatrick D, Burakham R, Srijaranai S, Glennon JD, Luong JHT. Micellar electrokinetic chromatography with amperometric detection and off-line solid-phase extraction for analysis of carbamate insecticides. J Chromatogr A 2010; 1217:5288-97. [PMID: 20598698 DOI: 10.1016/j.chroma.2010.06.024] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Revised: 06/04/2010] [Accepted: 06/08/2010] [Indexed: 11/17/2022]
Abstract
Six selected primary carbamate insecticides, methomyl, carbaryl, carbofuran, propoxur, isoprocarb, and promecarb, were hydrolyzed in alkaline solution, resulting in electroactive derivatives detectable at a platinum (Pt) electrode poised at +0.8 V vs Ag/AgCl (3 M NaCl). The Pt electrode was inserted into a small electrochemical cell and positioned close to the capillary outlet as an end-column detector to detect the carbamate derivatives after electrophoretic separation. Based on their predicted pK(a) values and aqueous solubilities, micellar electrokinetic chromatography (MEKC) was optimized for baseline separation of the derivatives using 20 mM borate, pH 10.2 containing 20 mM sodium dodecyl sulfate as a running buffer. When combined with solid-phase extraction (SPE) on octadecyl silica, a preconcentration factor of 100-fold achieved detection to 0.5 microM methomyl and to 0.01 microM for the remaining five pesticides, significantly below the level regulated by government agencies of most countries. The SPE-MEKC method when applied to the separation and analysis of spiked river water and soil samples, yielded results with excellent reproducibility, recovery and selectivity.
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Affiliation(s)
- Apichai Santalad
- Irish Separation Science Cluster, Department of Chemistry and Analytical and Biological Chemistry Research Facility, University College Cork, Cork, Ireland
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Wu W, Wu Y, Zheng M, Yang L, Wu X, Lin X, Xie Z. Pressurized capillary electrochromatography with indirect amperometric detection for analysis of organophosphorus pesticide residues. Analyst 2010; 135:2150-6. [DOI: 10.1039/c0an00101e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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