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Yao H, Wang X, Dong Y, Ye M. Promoting effect of TiVC MXene on cathodic electrogenerated chemiluminescence of Ru(bpy) 32+ and its application in the sensitive detection of sulfite. Mikrochim Acta 2024; 191:206. [PMID: 38498074 DOI: 10.1007/s00604-024-06290-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 02/27/2024] [Indexed: 03/19/2024]
Abstract
The enhanced cathodic ECL of Ru(bpy)32+ at a bimetallic element MXenes (TiVC MXene) modified electrode in neutral aqueous condition is reported. TiVC MXene significantly catalyzed the oxygen reduction reaction (ORR) as well as the electrochemical reduction of Ru(bpy)32+ to produce reactive oxygen species and Ru(bpy)3+. The obtained hydroxyl radical (OH∙) not only oxidized Ru(bpy)3+ to generate Ru(bpy)32+* and emit light through coreactant pathway, but also oxidized Ru(bpy)32+ to Ru(bpy)33+, which caused an annihilation ECL reaction. As a result, two pathways occurred simultaneously to generate strong cathodic ECL signal. Sulfite removes the dissolved oxygen in water and reduces the occurrence of ORR, which prohibits the generation of OH∙ to decrease the ECL signal. The decrement of ECL intensity varied linearly with the concentration of sulfite in the range 2 nM to 50 μM with a detection limit of 0.14 nM (3σ). The proposed sensor exhibited good analytical performance, and could be used in the detection of sulfite in real samples. The results revealed that the electrocatalytic behavior of TiVC MXene is the key factor for strong cathodic Ru(bpy)32+ ECL, which provides new application in ECL sensing field.
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Affiliation(s)
- Haifeng Yao
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, 243002, China
| | - Xinyi Wang
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, 243002, China
| | - Yongping Dong
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, 243002, China.
| | - Mingfu Ye
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, 243002, China.
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2
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A smartphone-adaptable dual-signal readout chemosensor for rapid detection of nitrite in food samples. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2023.105179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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3
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Muhammad N, Zia-ul-Haq M, Ali A, Naeem S, Intisar A, Han D, Cui H, Zhu Y, Zhong JL, Rahman A, Wei B. Ion chromatography coupled with fluorescence/UV detector: A comprehensive review of its applications in pesticides and pharmaceutical drug analysis. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2020.102972] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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Rasheed DM, Serag A, Abdel Shakour ZT, Farag M. Novel trends and applications of multidimensional chromatography in the analysis of food, cosmetics and medicine bearing essential oils. Talanta 2021; 223:121710. [DOI: 10.1016/j.talanta.2020.121710] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 09/22/2020] [Accepted: 09/24/2020] [Indexed: 12/17/2022]
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5
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Wang Y, Lou S, Liu X, Zhang L. Detection of trace metal ions in high-purity boric acid by online two-dimensional valve switching coupled with ion chromatography-inductively coupled plasma mass spectrometry. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104661] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Muhammad N, Guo D, Zhang Y, Intisar A, Subhani Q, Qadir MA, Cui H. Online clean-up setup for the determination of non-fluorescent acidic pharmaceutical drugs in complex biological samples. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1126-1127:121708. [PMID: 31437773 DOI: 10.1016/j.jchromb.2019.06.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 05/27/2019] [Accepted: 06/27/2019] [Indexed: 01/01/2023]
Abstract
Analysis of acidic pharmaceuticals in complex biological samples is a challenging and formidable task due to the existence of interfering constituents within the sample matrices. Therefore, in order to avoid analytical column clogging and suppression/enhancement of signals of the analyte of interest, herein a simple, cost-effective and quick online ion chromatography based clean-up setup was introduced. This system was further coupled with a cost-effective homemade photochemically induced fluorimetric (PIF) setup for direct online conversion of non-fluorescent acidic pharmaceutical drugs into their respective fluorescent species. This advantageous system was favorably applied for the determination of four non-fluorescent acidic compounds in two complex biological samples (human serum and oral fluid) with minimum labor and organic solvent consumption. At optimized conditions, the developed method has shown good sensitivity, selectivity, satisfactory recoveries (88.68-102.14%) and low limits of detection (0.35-8.10 μg/L) with minimum or zero matrix effect.
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Affiliation(s)
- Nadeem Muhammad
- Department of Environmental Engineering, Wuchang University of Technology, Wuhan, China; Department of Chemistry, Xixi Campus, Zhejiang University, Hangzhou 310028, China.
| | - Dandan Guo
- Department of Chemistry, Xixi Campus, Zhejiang University, Hangzhou 310028, China; Ningbo University, Institution of drug discovery technology, Ningbo 315211, Zhejiang, Peoples R. China.
| | - Yun Zhang
- Department of Chemistry, Xixi Campus, Zhejiang University, Hangzhou 310028, China
| | - Azeem Intisar
- Institute of Chemistry, University of the Punjab, Lahore, Pakistan
| | - Qamar Subhani
- Department of Chemistry, Xixi Campus, Zhejiang University, Hangzhou 310028, China; Higher Education Department, Lahore, Punjab, Pakistan
| | | | - Hairong Cui
- Department of Environmental Engineering, Wuchang University of Technology, Wuhan, China
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7
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Liu J, Chen Y, Wang L, Na M, Chen H, Chen X. Modification-Free Fabricating Ratiometric Nanoprobe Based on Dual-Emissive Carbon Dots for Nitrite Determination in Food Samples. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:3826-3836. [PMID: 30848591 DOI: 10.1021/acs.jafc.9b00024] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Great challenges still exist for facilely fabricating ratiometric fluorescent nanoprobes. Fortunately, the appearance of dual-emissive carbon dots (CDs) offers a glimmer of hope for the fabrication of modification-free ratiometric nanoprobe. The chemical and electronic structure characteristics of the dual-emissive CDs might be modulated by conjugated structures of carbon sources and the doped nitrogen and sulfur atoms, and the surface state also contributed to the fluorescence properties via surface functional groups. Herein, we report a one-pot strategy for simultaneous preparation of two kinds of CDs named RYDE CDs and RODE CDs, showing dual-emissive fluorescent peaks with long wavelength by 2,3-diaminobenzoic acid hydrochloride for the first time. Notably, trace nitrite determination with high sensitivity and selectivity was realized for the first time based on the modification-free ratiometric fluorescent nanoprobe fabricated rapidly and directly by the as-prepared RYDE CDs at constant room temperature (20 °C). Under the optimal conditions, the limit of detection for nitrite was 31.61 nM, with a wide concentration linear range of 0.1-100 μM. Furthermore, this ratiometric nanoprobe was successfully applied for nitrite analysis in bacon, sausage, pickle, and milk samples. Additionally, the nanoprobe was also capable of visually monitoring temperature fluctuations and cell imaging.
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Ren HH, Fan Y, Wang B, Yu LP. Polyethylenimine-Capped CdS Quantum Dots for Sensitive and Selective Detection of Nitrite in Vegetables and Water. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:8851-8858. [PMID: 30016094 DOI: 10.1021/acs.jafc.8b01951] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In the present work, polyethylenimine-capped CdS quantum dots (PEI-CdS QDs) with bright green fluorescence were synthesized and applied for sensitively and selectively detecting the nitrite in vegetable and water samples. Highly fluorescent and environment-friendly PEI-CdS QDs (quantum yield about 8%) with diameters of ca. 5 nm were easily synthesized by using hyperbranched PEI as functional polymer. Formation of the PEI-CdS QDs was verified by transmission electron microscopy and UV-vis spectroscopy. The fluorescence intensity of the as-synthesized PEI-CdS QDs was enhanced pronouncedly by the increasing amount of PEI and was stable when the pH ranged from 5.0 to 9.0. Our results demonstrated that the fluorescence of the PEI-CdS QDs was effectively quenched by the nitrite in a rather wide linear range of 1.0 × 10-7-1.0 × 10-4 M while efficiently avoiding the interferences from nitrate ions and other commonly coexisting anions of nitrite in the vegetable samples. The detection limit of the present method was lower than the maximum limit of nitrite in drinking water (6.5 × 10-5 M) ruled by the World Health Organization, which is significant to the application of the method.
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Lucattini L, Poma G, Covaci A, de Boer J, Lamoree MH, Leonards PEG. A review of semi-volatile organic compounds (SVOCs) in the indoor environment: occurrence in consumer products, indoor air and dust. CHEMOSPHERE 2018; 201:466-482. [PMID: 29529574 DOI: 10.1016/j.chemosphere.2018.02.161] [Citation(s) in RCA: 188] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 02/24/2018] [Accepted: 02/26/2018] [Indexed: 05/19/2023]
Abstract
As many people spend a large part of their life indoors, the quality of the indoor environment is important. Data on contaminants such as flame retardants, pesticides and plasticizers are available for indoor air and dust but are scarce for consumer products such as computers, televisions, furniture, carpets, etc. This review presents information on semi-volatile organic compounds (SVOCs) in consumer products in an attempt to link the information available for chemicals in indoor air and dust with their indoor sources. A number of 256 papers were selected and divided among SVOCs found in consumer products (n = 57), indoor dust (n = 104) and air (n = 95). Concentrations of SVOCs in consumer products, indoor dust and air are reported (e.g. PFASs max: 13.9 μg/g in textiles, 5.8 μg/kg in building materials, 121 ng/g in house dust and 6.4 ng/m3 in indoor air). Most of the studies show common aims, such as human exposure and risk assessment. The main micro-environments investigated (houses, offices and schools) reflect the relevance of indoor air quality. Most of the studies show a lack of data on concentrations of chemicals in consumer goods and often only the presence of chemicals is reported. At the moment this is the largest obstacle linking chemicals in products to chemicals detected in indoor air and dust.
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Affiliation(s)
- Luisa Lucattini
- Department of Environment and Health, VU University Amsterdam, De Boelelaan 1108, Amsterdam, The Netherlands.
| | - Giulia Poma
- Toxicological Centre, Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Wilrijk, Belgium
| | - Adrian Covaci
- Toxicological Centre, Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Wilrijk, Belgium
| | - Jacob de Boer
- Department of Environment and Health, VU University Amsterdam, De Boelelaan 1108, Amsterdam, The Netherlands
| | - Marja H Lamoree
- Department of Environment and Health, VU University Amsterdam, De Boelelaan 1108, Amsterdam, The Netherlands
| | - Pim E G Leonards
- Department of Environment and Health, VU University Amsterdam, De Boelelaan 1108, Amsterdam, The Netherlands
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Muhammad N, Wang F, Subhani Q, Zhao Q, Qadir MA, Cui H, Zhu Y. Comprehensive two-dimensional ion chromatography (2D-IC) coupled to a post-column photochemical fluorescence detection system for determination of neonicotinoids (imidacloprid and clothianidin) in food samples. RSC Adv 2018; 8:9277-9286. [PMID: 35541852 PMCID: PMC9078649 DOI: 10.1039/c7ra12555k] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 02/20/2018] [Indexed: 12/14/2022] Open
Abstract
There are increasing concerns about the dietary risks of neonicotinoids (NNIs); therefore their sensitive and accurate determination in dietary products is indispensable. However, the complex composition of agricultural food matrixes makes their extraction and quantitative determination a challenging task. Realizing this need, we herein report a simple, cost-effective, selective and sensitive fluorescence analytical workflow for analyses of two non-fluorescent neonicotinoids imidacloprid (IMI) and clothianidin (CLT) in six complex food samples (honey, ginger, durian, apple, tomato, cucumber) by online clean-up of sample extracts using two-dimensional ion chromatography (2D-IC) and a subsequent online post column UV induced fluorescence detection system. This online clean-up setup has proven advantageous to improve the limit of detection, potentially diminish matrix effects, and reduce analysis time and labor. The developed method showed excellent analytical figures of merit including linearity, selectivity, repeatability, recovery, and resolution for analysis of IMI and CLT in food samples. A 2D-IC system was successfully fabricated for clean isocratic chromatographic separations and sensitive post column UV induced fluorescence determination of two NNIs in six complex food samples.![]()
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Affiliation(s)
- Nadeem Muhammad
- Department of Environmental Engineering
- Wuchang University of Technology
- Wuhan
- China
- Department of Chemistry
| | - Fenglian Wang
- Department of Chemistry
- Xixi Campus
- Zhejiang University
- Hangzhou 310028
- China
| | - Qamar Subhani
- Department of Chemistry
- Xixi Campus
- Zhejiang University
- Hangzhou 310028
- China
| | - Qiming Zhao
- Department of Chemistry
- Xixi Campus
- Zhejiang University
- Hangzhou 310028
- China
| | | | - Hairong Cui
- Department of Environmental Engineering
- Wuchang University of Technology
- Wuhan
- China
| | - Yan Zhu
- Department of Chemistry
- Xixi Campus
- Zhejiang University
- Hangzhou 310028
- China
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