1
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Nguyen MH, Nguyen TD, Duong HA, Pham HV. Dual optical detection approach for capillary electrophoresis following two-step liquid-liquid extraction to determine ten phenols in water samples. J Chromatogr A 2024; 1715:464609. [PMID: 38163398 DOI: 10.1016/j.chroma.2023.464609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 12/20/2023] [Accepted: 12/25/2023] [Indexed: 01/03/2024]
Abstract
In this research, the analytical method was developed and evaluated for determining phenol and its nine derivatives belong to the US EPA priority pollutant list in water samples by using dual-channeled capillary electrophoresis (CE) coupled with two types of optical detectors, namely LED-induced fluorescence (LEDIF) and ultraviolet (UV) detectors. The optimal background electrolytes for the first and second CE channels were 20 mM borate (pH 9.80) with 400 µM fluorescein and 55 mM borate (pH 11.75), respectively. The two-step liquid-liquid extraction (LLE) was used for sample preparation and enrichment, in which phenol and its derivatives were extracted from the aqueous phase using 10 mL of n-hexane/1-octanol (60/40, v/v) and then were back extracted into a 0.1 M NaOH as a final acceptor phase. Under the optimal CE and two-step LLE conditions, the enrichment factors of 10 phenols were 184 - 1120-fold, and the method detection limits were lowered to 0.02-0.60 µg/L. The obtained intra-day and inter-day precisions in terms of relative standard deviations (RSD) were between 4.0 and 7.3 % and 6.7 and 14 %, respectively. This approach was used to determine phenols in water samples, with recoveries ranging from 82.0 to 108.9 %. In combination with sample enrichment by two-step LLE extraction, this is the first CE study conducted to determine phenols in the EPA list using two detector approaches, specifically CE-LEDIF/CE-UV.
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Affiliation(s)
- Manh Huy Nguyen
- Key Laboratory of Analytical Technology for Environmental Quality and Food Safety Control (KLATEFOS), VNU University of Science (VNU-HUS), Vietnam National University, Hanoi (VNU), 334 Nguyen Trai Street, Thanh Xuan District, Hanoi, Vietnam
| | - Thanh Dam Nguyen
- Key Laboratory of Analytical Technology for Environmental Quality and Food Safety Control (KLATEFOS), VNU University of Science (VNU-HUS), Vietnam National University, Hanoi (VNU), 334 Nguyen Trai Street, Thanh Xuan District, Hanoi, Vietnam
| | - Hong Anh Duong
- Key Laboratory of Analytical Technology for Environmental Quality and Food Safety Control (KLATEFOS), VNU University of Science (VNU-HUS), Vietnam National University, Hanoi (VNU), 334 Nguyen Trai Street, Thanh Xuan District, Hanoi, Vietnam; Research Centre for Environmental Technology and Sustainable Development (CETASD), VNU University of Science (VNU-HUS), Vietnam National University, Hanoi (VNU), 334 Nguyen Trai Street, Thanh Xuan District, Hanoi, Vietnam
| | - Hung Viet Pham
- Key Laboratory of Analytical Technology for Environmental Quality and Food Safety Control (KLATEFOS), VNU University of Science (VNU-HUS), Vietnam National University, Hanoi (VNU), 334 Nguyen Trai Street, Thanh Xuan District, Hanoi, Vietnam; Research Centre for Environmental Technology and Sustainable Development (CETASD), VNU University of Science (VNU-HUS), Vietnam National University, Hanoi (VNU), 334 Nguyen Trai Street, Thanh Xuan District, Hanoi, Vietnam.
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2
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Ingle RG, Zeng S, Jiang H, Fang WJ. Current development of bioanalytical sample preparation techniques in pharmaceuticals. J Pharm Anal 2022; 12:517-529. [PMID: 36105159 PMCID: PMC9463481 DOI: 10.1016/j.jpha.2022.03.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 02/23/2022] [Accepted: 03/14/2022] [Indexed: 12/03/2022] Open
Abstract
Sample preparation is considered as the bottleneck step in bioanalysis because each biological matrix has its own unique challenges and complexity. Competent sample preparation to extract the desired analytes and remove redundant components is a crucial step in each bioanalytical approach. The matrix effect is a key hurdle in bioanalytical sample preparation, which has gained extensive consideration. Novel sample preparation techniques have advantages over classical techniques in terms of accuracy, automation, ease of sample preparation, storage, and shipment and have become increasingly popular over the past decade. Our objective is to provide a broad outline of current developments in various bioanalytical sample preparation techniques in chromatographic and spectroscopic examinations. In addition, how these techniques have gained considerable attention over the past decade in bioanalytical research is mentioned with preferred examples. Modern trends in bioanalytical sample preparation techniques, including sorbent-based microextraction techniques, are primarily emphasized. Bioanalytical sampling techniques are described with suitable applications in pharmaceuticals. The pros and cons of each bioanalytical sampling techniques are described. Relevant biological matrices are outlined.
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3
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Ding Z, Zhao J, Hao Z, Guo M, Li L, Li N, Sun X, Zhang P, Cui J. Simultaneous electrochemical determination of nitrophenol isomers based on macroporous carbon functionalized with amino-bridged covalent organic polycalix[4]arenes. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:127034. [PMID: 34481393 DOI: 10.1016/j.jhazmat.2021.127034] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/30/2021] [Accepted: 08/23/2021] [Indexed: 06/13/2023]
Abstract
A glassy carbon electrode (GCE) modified by a hybrid, macroporous carbon (MPC) functionalized with triazine bridged covalent organic polycalix[4]arenes (CalCOP) (CalCOP-MPC), has been fabricated and utilized for simultaneous detection of nitrophenols (NP). The obtained CalCOP-MPC were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS), which confirmed that MPC had functionalized with CalCOP successfully. Benefiting from the synergistic supramolecular effect of macrocyclic receptor of CalCOP and the excellent electrical properties of MPC, the anodic peaks of o-nitrophenol (o-NP), m-nitrophenol (m-NP), and p-nitrophenol (p-NP) in their mixture can be well separated by the prepared electrode. Differential pulse voltammetry (DPV) measurements at CalCOP-MPC/GCE revealed that the linear ranges of NP isomers were all 1-400 μM, and the detection limit limits were 0.383 μM, 0.122 μM, and 0.212 μM for o-NP, m-NP, and p-NP, respectively. Moreover, the prepared modified electrodes showed a relatively good selectivity and stability, implying the prospect for detecting NP in real environmental samples.
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Affiliation(s)
- Zhiyuan Ding
- College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Jin Zhao
- College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin 300457, China.
| | - Zelin Hao
- College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Minjie Guo
- College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Liang Li
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China.
| | - Nan Li
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China.
| | - Xuyang Sun
- Sinopec Shanghai Research Institute of Petrochemical Technology, Shanghai 201208, China
| | - Peibin Zhang
- Sinopec Shanghai Research Institute of Petrochemical Technology, Shanghai 201208, China
| | - Jing Cui
- Sinopec Shanghai Research Institute of Petrochemical Technology, Shanghai 201208, China
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4
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D'Almeida SR, Buoro RM. Determination of
p
‐Nitrophenol in Synthetic Textile Wastewater Samples Using a Graphene Oxide/Palladium Nanoparticles Modified Carbon Paste Electrode. ELECTROANAL 2021. [DOI: 10.1002/elan.202060539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Suysia R. D'Almeida
- Instituto de Química de São Carlos Universidade de São Paulo Av. Trabalhador São-Carlense, 400 SP, 13566-590 São Carlos Brazil
| | - Rafael M. Buoro
- Instituto de Química de São Carlos Universidade de São Paulo Av. Trabalhador São-Carlense, 400 SP, 13566-590 São Carlos Brazil
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5
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Beh SY, Md Saleh N, Asman S. Surfactant-functionalised magnetic ferum oxide coupled with high performance liquid chromatography for the extraction of phenol. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:607-619. [PMID: 33480366 DOI: 10.1039/d0ay02166k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The usage of phenols in the marketplace has been increasing tremendously, which has raised concerns about their toxicity and potential effect as emerging pollutants. Phenol's structure has closely bonded phenyl and hydroxy groups, thereby making its functional characteristics closely similar to that of alcohol. As a result, phenol is used as a base compound for commercial home-based products. Hence, a simple and efficient procedure is required to determine the low concentration of phenols in environmental water samples. In this research, a method of combining magnetic nanoparticles (MNPs) with surfactant Sylgard 309 was developed to overcome the drawbacks in the classical extraction methods. In addition, this developed method improved the performance of extraction when MNPs and the surfactant Sylgard 309 were used separately, as reported in the previous research. This MNP-Sylgard 309 was synthesised by the coprecipitation method and attracts phenolic compounds in environmental water samples. Response surface methodology was used to study the parameters and responses in order to obtain an optimised condition using MNP-Sylgard 309. The parameters included the effect of pH, extraction time, and concentration of the analyte. Meanwhile, the responses measured were the peak area of the chromatogram and the percentage recovery. From this study, the results of the optimum conditions for extraction using MNP-Sylgard 309 were pH 7, extraction time of 20 min, and analyte concentration of 10.0 μg mL-1. Under the optimized conditions, MNP-Sylgard 309 showed a low limit of detection of 0.665 μg mL-1 and the limit of quantification was about 2.219 μg mL-1. MNP-Sylgard 309 was successfully applied on environmental water samples such as lake and river water. High recovery (76.23%-110.23%) was obtained.
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Affiliation(s)
- Shiuan Yih Beh
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, The National University of Malaysia (UKM), 43600 UKM Bangi, Selangor, Malaysia.
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6
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Insights into coacervative and dispersive liquid-phase microextraction strategies with hydrophilic media – A review. Anal Chim Acta 2021; 1143:225-249. [DOI: 10.1016/j.aca.2020.08.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 08/10/2020] [Accepted: 08/12/2020] [Indexed: 12/18/2022]
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7
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Deng P, Wang W, Liu X, Wang L, Yan Y. A hydrophobic polymer stabilized CsPbBr 3 sensor for environmental pollutant detection. NEW J CHEM 2021. [DOI: 10.1039/d0nj04498a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The detection of o-nitrophenol in the environment is of great significance to environmental protection.
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Affiliation(s)
- Pengyin Deng
- Key Laboratory of Preparation and Application of Environmental Friendly Materials
- Jilin Normal University
- Ministry of Education
- Changchun 130103
- P. R. China
| | - Wei Wang
- School of Chemistry and Environmental Engineering
- Changchun University of Science and Technology
- 130022 Changchun
- P. R. China
| | - Xiqing Liu
- School of Material Science and Engineering
- Jiangsu University
- 212013 Zhenjiang
- P. R. China
| | - Liang Wang
- Key Laboratory of Preparation and Application of Environmental Friendly Materials
- Jilin Normal University
- Ministry of Education
- Changchun 130103
- P. R. China
| | - Yongsheng Yan
- Institute of Green Chemistry and Chemical Technology
- Jiangsu University
- 212013 Zhenjiang
- P. R. China
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8
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9
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Marothu VK, K. P, G. M, K. L. Cloud point extraction as a sample enrichment technique for capillary electrophoresis–An overview. J LIQ CHROMATOGR R T 2020. [DOI: 10.1080/10826076.2020.1790386] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Padmalatha K.
- Vijaya Institute of Pharmaceutical Sciences for Women, Vijayawada, India
| | - Madhavi G.
- Vijaya Institute of Pharmaceutical Sciences for Women, Vijayawada, India
| | - Lasya K.
- Vijaya Institute of Pharmaceutical Sciences for Women, Vijayawada, India
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10
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Yuan J, Li A, Chen T, Du J, Ma A, Pan J. Micelle-dominated distribution strategy for non-matrix matched calibration without an internal standard: "Extract-and-shoot" approach for analyzing hydrophilic targets in blood and cell samples. Anal Chim Acta 2020; 1102:24-35. [PMID: 32043993 DOI: 10.1016/j.aca.2019.12.041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 11/19/2019] [Accepted: 12/15/2019] [Indexed: 10/25/2022]
Abstract
The analysis of trace hydrophilic targets in complex aqueous-rich matrices is considerably challenging, generally requiring matrix-matched calibration, internal standard, or time-and-labor-intensive sample preparation. To address this analytical bottleneck, a non-matrix-matched calibration strategy without using internal standard was reported for the first time to analyze complicated biosamples such as whole blood, plasma, serum, and cell samples. This strategy, termed micelle-dominated distribution, also aimed at realizing the simple "extract-and-shoot" analytical process for such complex matrices. The micelle-matrix interaction was found to efficiently eliminate the matrix effect by dominating phase separation and analyte distribution between the extraction and matrix phases. Thus, calibration linear curves prepared in water were applicable to the analysis of all the above-mentioned sample types. Rapid distribution equilibrium within 4 min was achieved. This strategy could tolerate direct large volume injection, thereby providing two-order-of-magnitude enhancement in the sensitivity of ion-pair chromatography. The analytical method integrated cell rupture, matrix cleanup, analyte extraction, and on-column preconcentration into a fast and high-throughput operation. The successful application to the determination of exogenous pesticides and endogenous glutathione exhibited low limits of detection (0.0085-0.015 μg mL-1 for pesticides; 0.52 μg mL-1 for glutathione), wide linear ranges (0.028-50 μg mL-1 and 0.049-50 μg mL-1 for pesticides; 1.7-1000 μg mL-1 for glutathione), good linearies (R2 = 0.9994-0.9999), excellent accuracy (recoveries of 91.3-105.2%), and good precision (0.7-6.2% at the levels of 0.028 (or 0.049), 0.1, 0.5, and 50 μg mL-1 for pesticides; 0.5-8.7% at 1.7, 500, and 1000 μg mL-1 for glutathione).
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Affiliation(s)
- Jiahao Yuan
- Department of Hygiene Detection Center, School of Public Health, Southern Medical University (Guangdong Provincial Key Laboratory of Tropical Disease Research), Guangzhou, Guangdong, China
| | - Anqi Li
- Department of Hygiene Detection Center, School of Public Health, Southern Medical University (Guangdong Provincial Key Laboratory of Tropical Disease Research), Guangzhou, Guangdong, China
| | - Tingting Chen
- Department of Hygiene Detection Center, School of Public Health, Southern Medical University (Guangdong Provincial Key Laboratory of Tropical Disease Research), Guangzhou, Guangdong, China
| | - Juan Du
- Department of Hygiene Detection Center, School of Public Health, Southern Medical University (Guangdong Provincial Key Laboratory of Tropical Disease Research), Guangzhou, Guangdong, China
| | - Ande Ma
- Department of Hygiene Detection Center, School of Public Health, Southern Medical University (Guangdong Provincial Key Laboratory of Tropical Disease Research), Guangzhou, Guangdong, China.
| | - Jialiang Pan
- Department of Hygiene Detection Center, School of Public Health, Southern Medical University (Guangdong Provincial Key Laboratory of Tropical Disease Research), Guangzhou, Guangdong, China.
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11
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Xiao X, Wang Y, Zhang D, Gong J, Ma J, Yang T, Tong Z. Synthesis of pumpkin-like CeO2 microstructures and electrochemical detection for phenol. INORG NANO-MET CHEM 2019. [DOI: 10.1080/24701556.2019.1661438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Xin Xiao
- Department of Chemical Engineering, Jiangsu Ocean University, Lianyungang, China
- Jiangsu Marine Resources Development Research Institute, Lianyungang, China
| | - YiHui Wang
- Department of Chemical Engineering, Jiangsu Ocean University, Lianyungang, China
- Jiangsu Marine Resources Development Research Institute, Lianyungang, China
| | - DongEn Zhang
- Department of Chemical Engineering, Jiangsu Ocean University, Lianyungang, China
- Jiangsu Marine Resources Development Research Institute, Lianyungang, China
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
| | - JunYan Gong
- Department of Chemical Engineering, Jiangsu Ocean University, Lianyungang, China
- Jiangsu Marine Resources Development Research Institute, Lianyungang, China
| | - JuanJuan Ma
- Department of Chemical Engineering, Jiangsu Ocean University, Lianyungang, China
- Jiangsu Marine Resources Development Research Institute, Lianyungang, China
| | - Tao Yang
- Department of Chemical Engineering, Jiangsu Ocean University, Lianyungang, China
- Jiangsu Marine Resources Development Research Institute, Lianyungang, China
| | - ZhiWei Tong
- Department of Chemical Engineering, Jiangsu Ocean University, Lianyungang, China
- Jiangsu Marine Resources Development Research Institute, Lianyungang, China
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12
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Stoytcheva M, Zlatev R, Velkova Z, Gochev V, Ayala A, Montero G, Valdez B. Resolution of a Mononitrophenol Isomers Mixture by Differential Alternative Pulses Voltammetry. ELECTROANAL 2019. [DOI: 10.1002/elan.201800762] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Roumen Zlatev
- Universidad Autónoma de Baja CaliforniaInstituto de Ingeniería Mexicali México
| | - Zdravka Velkova
- Medical University of PlovdivFaculty of PharmacyDep. Chemical Sciences Plovdiv Bulgaria
| | - Velizar Gochev
- Plovdiv University “P. Hilendarski”Faculty of BiologyDep. Biochemistry and Microbiology Plovdiv Bulgaria
| | - Alan Ayala
- Universidad Autónoma de Baja CaliforniaInstituto de Ingeniería Mexicali México
| | - Gisela Montero
- Universidad Autónoma de Baja CaliforniaInstituto de Ingeniería Mexicali México
| | - Benjamín Valdez
- Universidad Autónoma de Baja CaliforniaInstituto de Ingeniería Mexicali México
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13
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Yu J, Huang J, Long F, Ma A, Pan J. “Inverse” cloud point extraction coupled with large volume injection ion-pair chromatography: A green route integrating extraction, challenging sample cleanup and on-column concentration into fast simple operation. Talanta 2018; 190:38-46. [DOI: 10.1016/j.talanta.2018.07.074] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 07/17/2018] [Accepted: 07/22/2018] [Indexed: 12/14/2022]
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14
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de Araújo Padilha CE, de Azevedo JCS, de Sousa FC, de Oliveira SD, Souza DFDS, de Oliveira JA, de Macedo GR, dos Santos ES. Recovery of polyphenols from camu-camu (Myrciaria dubia H.B.K. McVaugh) depulping residue by cloud point extraction. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2017.10.032] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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15
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Speciation of inorganic arsenic(III) and arsenic(V) by a facile dual-cloud point extraction coupled with inductively plasma-optical emission spectrometry. Talanta 2018; 181:265-270. [DOI: 10.1016/j.talanta.2017.12.083] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 11/30/2017] [Accepted: 12/27/2017] [Indexed: 12/21/2022]
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16
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Recent advances in biological sample preparation methods coupled with chromatography, spectrometry and electrochemistry analysis techniques. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.02.005] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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17
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Luo X, Zheng H, Zhang Z, Wang M, Yang B, Huang L, Wang M. Cloud point extraction for simultaneous determination of 12 phenolic compounds by high performance liquid chromatography with fluorescence detection. Microchem J 2018. [DOI: 10.1016/j.microc.2017.09.026] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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18
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Gerent GG, Spinelli A. Magnetite-platinum nanoparticles-modified glassy carbon electrode as electrochemical detector for nitrophenol isomers. JOURNAL OF HAZARDOUS MATERIALS 2017; 330:105-115. [PMID: 28214399 DOI: 10.1016/j.jhazmat.2017.02.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 01/31/2017] [Accepted: 02/02/2017] [Indexed: 05/12/2023]
Abstract
A glassy carbon electrode was modified with magnetite and platinum nanoparticles stabilized with 3-n-propyl-4-picoline silsesquioxane chloride. This chemically-modified electrode is proposed for the first time for the individual or simultaneous electrochemical detection of nitrophenol isomers. Nanoparticles act as catalysts and also increase the surface area. The polymer stabilizes the particles and provides the electrochemical separation of isomers. Under optimized conditions, the reduction peak currents, obtained by differential-pulse voltammetry, of 2-, 3-, and 4-nitrophenol increased linearly with increases in their concentration in the range of 0.1-1.5μmolL-1. In individual analysis, the detection limits were 33.7nmolL-1, 45.3nmolL-1 and 48.2nmolL-1, respectively. Also, simultaneous analysis was possible for 2-, and 4-nitrophenol. In this case, the separation of the peak potentials was 0.138V and the detection limits were 69.6nmolL-1 and 58.0nmolL-1, respectively. These analytical figures of merit evidence the outstanding performance of the modified electrode, which was also successfully applied to the individual determination of isomers in environmental and biological samples. The magnetite and platinum nanoparticles modified glassy carbon electrode was able to detect nitrophenol isomers at the ppm level in rain water and human urine samples.
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Affiliation(s)
- Giles G Gerent
- Grupo de Estudos de Processos Eletroquímicos e Eletroanalíticos, Universidade Federal de Santa Catarina, Campus Universitário Reitor João David Ferreira Lima, Departamento de Química - CFM, 88040-900, Florianópolis, SC, Brazil
| | - Almir Spinelli
- Grupo de Estudos de Processos Eletroquímicos e Eletroanalíticos, Universidade Federal de Santa Catarina, Campus Universitário Reitor João David Ferreira Lima, Departamento de Química - CFM, 88040-900, Florianópolis, SC, Brazil.
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19
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Nong C, Niu Z, Li P, Wang C, Li W, Wen Y. Dual-cloud point extraction coupled to high performance liquid chromatography for simultaneous determination of trace sulfonamide antimicrobials in urine and water samples. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1051:9-16. [DOI: 10.1016/j.jchromb.2017.02.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 02/27/2017] [Accepted: 02/28/2017] [Indexed: 10/20/2022]
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20
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21
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Wang Y, Han J, Liu Y, Wang L, Ni L, Tang X. Recyclable non-ligand dual cloud point extraction method for determination of lead in food samples. Food Chem 2016. [DOI: 10.1016/j.foodchem.2015.06.092] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Farajzadeh MA, Afshar Mogaddam MR, Alizadeh Nabil AA. A sensitive and efficient method for trace analysis of some phenolic compounds using simultaneous derivatization and air-assisted liquid-liquid microextraction from human urine and plasma samples followed by gas chromatography-nitrogen phosphorous detection. Biomed Chromatogr 2015; 29:1921-31. [PMID: 26014445 DOI: 10.1002/bmc.3517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Revised: 05/05/2015] [Accepted: 05/15/2015] [Indexed: 11/05/2022]
Abstract
In present study, a simultaneous derivatization and air-assisted liquid-liquid microextraction method combined with gas chromatography-nitrogen phosphorous detection has been developed for the determination of some phenolic compounds in biological samples. The analytes are derivatized and extracted simultaneously by a fast reaction with 1-flouro-2,4-dinitrobenzene under mild conditions. Under optimal conditions low limits of detection in the range of 0.05-0.34 ng mL(-1) are achievable. The obtained extraction recoveries are between 84 and 97% and the relative standard deviations are less than 7.2% for intraday (n = 6) and interday (n = 4) precisions. The proposed method was demonstrated to be a simple and efficient method for the analysis of phenols in biological samples.
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Affiliation(s)
- Mir Ali Farajzadeh
- Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
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23
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Wang Y, Chen H, Han J, Wang L, Ni L, Wang T, Tang X. A novel cyclic non-ligand dual-cloud point extraction for the preconcentration of cadmium(ii) through pH regulation in food and environmental matrices. NEW J CHEM 2015. [DOI: 10.1039/c5nj01426c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cd2+ was extracted through pH regulation instead of adding a complexant and the position of Cd2+ in the micelles was verified.
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Affiliation(s)
- Yun Wang
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Hui Chen
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Juan Han
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Lei Wang
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Liang Ni
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Tingting Wang
- Yancheng Entry-Exit Inspection and Quarantine Bureau
- Yancheng 224000
- People's Republic of China
| | - Xu Tang
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
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Xing R, Hu S, Chen X, Bai X, Feng M. On-site sampling and sample-preparation approach with a portable sampler based on hollow-fiber/graphene bars for the microextraction of nitrobenzene compounds in lake water. J Sep Sci 2014; 38:368-73. [DOI: 10.1002/jssc.201401129] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 11/06/2014] [Accepted: 11/06/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Rongrong Xing
- School of Pharmacy; Shanxi Medical University; Taiyuan China
| | - Shuang Hu
- School of Pharmacy; Shanxi Medical University; Taiyuan China
| | - Xuan Chen
- School of Pharmacy; Shanxi Medical University; Taiyuan China
| | - Xiaohong Bai
- School of Pharmacy; Shanxi Medical University; Taiyuan China
| | - Meiqin Feng
- School of Pharmacy; Shanxi Medical University; Taiyuan China
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25
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Noh S, Yang H. Sensitive Phenol Detection Using Tyrosinase-Based Phenol Oxidation Combined with Redox Cycling of Catechol. ELECTROANAL 2014. [DOI: 10.1002/elan.201400383] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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26
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Kukusamude C, Srijaranai S, Kato M, Quirino JP. Cloud point sample clean-up and capillary zone electrophoresis with field enhanced sample injection and micelle to solvent stacking for the analysis of herbicides in milk. J Chromatogr A 2014; 1351:110-4. [DOI: 10.1016/j.chroma.2014.05.050] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 05/15/2014] [Accepted: 05/16/2014] [Indexed: 10/25/2022]
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Tang S, Liu S, Guo Y, Liu X, Jiang S. Recent advances of ionic liquids and polymeric ionic liquids in capillary electrophoresis and capillary electrochromatography. J Chromatogr A 2014; 1357:147-57. [PMID: 24786657 DOI: 10.1016/j.chroma.2014.04.037] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 04/09/2014] [Accepted: 04/11/2014] [Indexed: 12/16/2022]
Abstract
Ionic liquids (ILs) and polymeric ionic liquids (PILs) with unique and fascinating properties have drawn considerable interest for their use in separation science, especially in chromatographic techniques. In this article, significant contributions of ILs and PILs in the improvement of capillary electrophoresis and capillary electrochromatography are described, and a specific overview of the most relevant examples of their applications in the last five years is also given. Accordingly, some general conclusions and future perspectives in these areas are discussed.
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Affiliation(s)
- Sheng Tang
- Key Laboratory of Chemistry of Northwestern Plant Resources, CAS/Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China
| | - Shujuan Liu
- Key Laboratory of Chemistry of Northwestern Plant Resources, CAS/Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Yong Guo
- Key Laboratory of Chemistry of Northwestern Plant Resources, CAS/Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Xia Liu
- Key Laboratory of Chemistry of Northwestern Plant Resources, CAS/Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Shengxiang Jiang
- Key Laboratory of Chemistry of Northwestern Plant Resources, CAS/Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
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28
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Zhang H, Zhang W, Zhang Z, Shi Z, Liu W. GREEN ANALYTICAL METHOD FOR THE SENSITIVE DETERMINATION OF MONONITROPHENOL ISOMERS BY DYNAMIC pH JUNCTION CAPILLARY ELECTROPHORESIS. J LIQ CHROMATOGR R T 2014. [DOI: 10.1080/10826076.2013.778633] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Hongyi Zhang
- a College of Chemistry and Environmental Science, Hebei University , Baoding , China
- b Key Laboratory of Analytical Science and Technology of Hebei Province , Baoding , China
| | - Wei Zhang
- a College of Chemistry and Environmental Science, Hebei University , Baoding , China
| | - Zhijun Zhang
- a College of Chemistry and Environmental Science, Hebei University , Baoding , China
| | - Zhihong Shi
- a College of Chemistry and Environmental Science, Hebei University , Baoding , China
- b Key Laboratory of Analytical Science and Technology of Hebei Province , Baoding , China
| | - Wei Liu
- a College of Chemistry and Environmental Science, Hebei University , Baoding , China
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29
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Zain NNM, Abu Bakar NK, Mohamad S, Saleh NM. Optimization of a greener method for removal phenol species by cloud point extraction and spectrophotometry. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 118:1121-1128. [PMID: 24161875 DOI: 10.1016/j.saa.2013.09.129] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 09/19/2013] [Accepted: 09/29/2013] [Indexed: 06/02/2023]
Abstract
A greener method based on cloud point extraction was developed for removing phenol species including 2,4-dichlorophenol (2,4-DCP), 2,4,6-trichlorophenol (2,4,6-TCP) and 4-nitrophenol (4-NP) in water samples by using the UV-Vis spectrophotometric method. The non-ionic surfactant DC193C was chosen as an extraction solvent due to its low water content in a surfactant rich phase and it is well-known as an environmentally-friendly solvent. The parameters affecting the extraction efficiency such as pH, temperature and incubation time, concentration of surfactant and salt, amount of surfactant and water content were evaluated and optimized. The proposed method was successfully applied for removing phenol species in real water samples.
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Affiliation(s)
- N N M Zain
- Department of Chemistry, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia; Advance Medical & Dental Institute, Universiti Sains Malaysia, 13200 Kepala Batas, Pulau Pinang, Malaysia.
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30
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Vuković J, Jurišić Grubešić R, Kremeŕ D, Spaić A. One-step solid-phase UV spectrophotometric method for phenol determination in vaccines: Development and quality assessment. JOURNAL OF ANALYTICAL CHEMISTRY 2013. [DOI: 10.1134/s1061934813120137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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31
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Xia Q, Jiao Y, Xiong W, Yang Y, Liu M. Development of a Precolumn Derivatization Procedure Prior to Ultrasound-Assisted Cloud Point Extraction for Sensitive Determination of Fluoroquinolones in Eggs by High-Performance Liquid Chromatography with Fluorescence Detection. FOOD ANAL METHOD 2013. [DOI: 10.1007/s12161-013-9725-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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32
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Nurul Karim M, Lee HJ. Amperometric phenol biosensor based on covalent immobilization of tyrosinase on Au nanoparticle modified screen printed carbon electrodes. Talanta 2013; 116:991-6. [PMID: 24148506 DOI: 10.1016/j.talanta.2013.08.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Revised: 08/06/2013] [Accepted: 08/06/2013] [Indexed: 11/18/2022]
Abstract
A highly selective and sensitive amperometric biosensor for the detection of phenol was developed based on a platform where Au nanoparticles (AuNPs) are electrodeposited onto a disposable screen printed carbon electrode and tyrosinase is then covalently immobilized on the AuNP's using alkanethiol and cross-linker molecules. The electrocatalytic responses of the tyrosinase modified biosensor for the detection of phenol were measured using both cyclic voltammetry and square wave voltammetry. Temperature, buffer pH and the amount of tyrosinase immobilized on the electrode surface were also optimized for phenol sensing. A high sensitivity of 15.7 µA ppm(-1), a low detectable phenol concentration of 47 ppb alongside a linear response from 47 ppb to 15 ppm was achieved using square wave voltammetry in addition to good selectivity. As a demonstration, the biosensor was applied to determine phenol concentrations in regional water samples from S. Korea.
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Affiliation(s)
- Md Nurul Karim
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, 1370 Sankyuk-dong, Buk-gu, Daegu 702-701, Republic of Korea
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33
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Wen Y, Li J, Liu J, Lu W, Ma J, Chen L. Dual cloud point extraction coupled with hydrodynamic-electrokinetic two-step injection followed by micellar electrokinetic chromatography for simultaneous determination of trace phenolic estrogens in water samples. Anal Bioanal Chem 2013; 405:5843-52. [DOI: 10.1007/s00216-013-6989-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 04/14/2013] [Accepted: 04/15/2013] [Indexed: 11/25/2022]
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34
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Liang TT, Lv ZH, Jiang TF, Wang YH. High-density extraction solvent-based solvent de-emulsification dispersive liquid-liquid microextraction combined with MEKC for detection of chlorophenols in water samples. Electrophoresis 2013; 34:345-52. [DOI: 10.1002/elps.201200355] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 10/08/2012] [Accepted: 10/08/2012] [Indexed: 11/09/2022]
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35
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Wen Y, Li J, Ma J, Chen L. Recent advances in enrichment techniques for trace analysis in capillary electrophoresis. Electrophoresis 2012; 33:2933-52. [PMID: 23019127 DOI: 10.1002/elps.201200240] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 06/06/2012] [Accepted: 06/28/2012] [Indexed: 01/25/2023]
Abstract
CE is gaining great popularity as a well-established separation technique for many fields such as pharmaceutical research, clinical application, environmental monitoring, and food analysis, owing to its high resolving power, rapidity, and small amount of samples and reagents required. However, the sensitivity in CE analysis is still considered as being inferior to that in HPLC analysis. Diverse enrichment methods and techniques have been increasingly developed for overcoming this issue. In this review, we summarize the recent advances in enrichment techniques containing off-line preconcentration (sample preparation) and on-line concentration (sample stacking) to enhancing sensitivity in CE for trace analysis over the last 5 years. Some relatively new cleanup and preconcentration methods involving the use of dispersive liquid-liquid microextraction, supercritical fluid extraction, matrix solid-phase dispersion, etc., and the continued use and improvement of conventional SPE, have been comprehensively reviewed and proved effective preconcentration alternatives for liquid, semisolid, and solid samples. As for CE on-line stacking, we give an overview of field amplication, sweeping, pH regulation, and transient isotachophoresis, and the coupling of multiple modes. Moreover, some limitations and comparisons related to such methods/techniques are also discussed. Finally, the combined use of various enrichment techniques and some significant attempts are proposed to further promote analytical merits in CE.
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Affiliation(s)
- Yingying Wen
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research-YIC, Chinese Academy of Sciences-CAS, Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, YICCAS, Yantai, P. R. China
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36
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Ma H, Mu F, Fan S, Zhou X, Jia Q. Development of a cloud point extraction method for the determination of phenolic compounds in environmental water samples coupled with high-performance liquid chromatography. J Sep Sci 2012; 35:2484-90. [DOI: 10.1002/jssc.201200170] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Revised: 03/19/2012] [Accepted: 03/21/2012] [Indexed: 11/12/2022]
Affiliation(s)
- Huihui Ma
- College of Chemistry; Jilin University; Changchun; P. R. China
| | - Fengtian Mu
- College of Chemistry; Jilin University; Changchun; P. R. China
| | - Shujuan Fan
- College of Chemistry; Jilin University; Changchun; P. R. China
| | - Xiao Zhou
- Jilin Entry & Exit Inspection and Quarantine Bureau of China; Changchun; P. R. China
| | - Qiong Jia
- College of Chemistry; Jilin University; Changchun; P. R. China
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37
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VUKOVIC J, MATSUOKA S, YOSHIMURA K, JURIŠIC GRUBEŠIC R, KREMER D, ŠANTIC N. Development and Validation of a Sensitive and Fast Solid-phase Spectrophotometric Procedure for Phenol Determination in Pharmaceuticals. ANAL SCI 2012; 28:397-402. [DOI: 10.2116/analsci.28.397] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Jadranka VUKOVIC
- Department of Analytics and Control of Medicines, Faculty of Pharmacy and Biochemistry, University of Zagreb
| | - Shiro MATSUOKA
- Department of Environmental Science, Faculty of Science, Niigata University
| | | | - Renata JURIŠIC GRUBEŠIC
- Department of Analytics and Control of Medicines, Faculty of Pharmacy and Biochemistry, University of Zagreb
| | - Dario KREMER
- Department of Pharmaceutical Botany with Fran Kušan Botanical Garden, Faculty of Pharmacy and Biochemistry, University of Zagreb
| | - Nataša ŠANTIC
- Department of Analytics and Control of Medicines, Faculty of Pharmacy and Biochemistry, University of Zagreb
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38
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Vichapong J, Santaladchaiyakit Y, Burakham R, Srijaranai S. Cloud-point extraction and reversed-phase high performance liquid chromatography for analysis of phenolic compounds and their antioxidant activity in Thai local wines. Journal of Food Science and Technology 2011; 51:664-72. [PMID: 24741159 DOI: 10.1007/s13197-011-0556-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 09/01/2011] [Accepted: 09/30/2011] [Indexed: 10/16/2022]
Abstract
A cloud-point extraction (CPE) was developed for the determination of 12 phenolic compounds (i.e. gallic acid, procatechuic acid, p-hydroxybenzoic acid, vanillic acid, caffeic acid, syringic acid, p-coumaric acid, ferulic acid, guaiacol, p-cresol, o-cresol and 3,5-xylenol) using reversed-phase high performance liquid chromatography (RP-HPLC) with photodiode array (PDA) detection. The optimum CPE conditions were 2.0% (w/v) Triton X-114, 3.0% (w/v) Na2SO4 and 20-min equilibrated at 45 °C. The surfactant-rich phase was then analyzed by HPLC using a Symmetry C18 column, gradient mobile phase of acetonitrile and 1% (v/v) acetic acid, and PDA detection at 280 nm. Under the optimum condition, the target phenolic compounds were separated within 25 min. CPE gave higher enrichment factor up to 15-fold compared to that of direct analysis. The proposed method showed good analytical performances with limits of detection in the range 0.01-0.1 mg L(-1) and precisions with relative standard deviation (RSD) lower than 5% for retention time and 10% for peak area. The method was successfully applied to the analysis of phenolic compounds in Thai local wine samples. Gallic acid, procatechuic acid, and vanillic acid were the highest phenolics found in the studied wines with the contents up to 172.4, 99.1, and 26.6 mg L(-1), respectively. The recovery of the spiked wine samples (0.5, 1.0, and 2.0 mg L(-1)) were obtained in the range of 90.4-110%. High total phenolic content, total flavonoids, and antioxidant activity (DPPH method) in the studied wines were also observed.
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Affiliation(s)
- Jitlada Vichapong
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002 Thailand
| | - Yanawath Santaladchaiyakit
- Department of Chemistry, Faculty of Engineering, Rajamangala University of Technology Isan, Khon Kaen Campus, Khon Kaen, 40000 Thailand
| | - Rodjana Burakham
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002 Thailand
| | - Supalax Srijaranai
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002 Thailand
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39
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Rounaghi G, Mohammad Zadeh Kakhki R, Heidari T. Artificial Neural Networks Applied for Simultaneous Analysis of Mixtures of Nitrophenols by Conductometric Acid–Base Titration. Ind Eng Chem Res 2011. [DOI: 10.1021/ie200900z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gholamhossein Rounaghi
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
| | | | - Tahereh Heidari
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
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40
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Micelle-Mediated Extraction and Flame Atomic Absorption Spectrometric Method for Determination of Trace Cobalt Ions in Beverage Samples. FOOD ANAL METHOD 2011. [DOI: 10.1007/s12161-011-9268-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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41
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Faraji H, Saber-Tehrani M, Mirzaie A, Waqif-Husain S. Application of liquid-liquid microextraction-high-performance thin-layer chromatography for preconcentration and determination of phenolic compounds in aqueous samples. JPC-J PLANAR CHROMAT 2011. [DOI: 10.1556/jpc.24.2011.3.7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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42
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Supramolecular solvents in the extraction of organic compounds. A review. Anal Chim Acta 2010; 677:108-30. [DOI: 10.1016/j.aca.2010.07.027] [Citation(s) in RCA: 215] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2010] [Revised: 07/14/2010] [Accepted: 07/16/2010] [Indexed: 11/17/2022]
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43
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Wang Q, Qiu H, Li J, Liu X, Jiang S. On-line coupling of ionic liquid-based single-drop microextraction with capillary electrophoresis for sensitive detection of phenols. J Chromatogr A 2010; 1217:5434-9. [DOI: 10.1016/j.chroma.2010.06.059] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2010] [Revised: 06/17/2010] [Accepted: 06/23/2010] [Indexed: 11/16/2022]
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44
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Yin XB, Guo JM, Wei W. Dual-cloud point extraction and tertiary amine labeling for selective and sensitive capillary electrophoresis-electrochemiluminescent detection of auxins. J Chromatogr A 2010; 1217:1399-406. [DOI: 10.1016/j.chroma.2009.12.029] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2009] [Revised: 11/30/2009] [Accepted: 12/09/2009] [Indexed: 11/25/2022]
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45
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Rodrigues GD, de Lemos LR, da Silva LHM, da Silva MDCH, Minim LA, Coimbra JSDR. A green and sensitive method to determine phenols in water and wastewater samples using an aqueous two-phase system. Talanta 2010; 80:1139-44. [DOI: 10.1016/j.talanta.2009.08.039] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2009] [Revised: 07/03/2009] [Accepted: 08/30/2009] [Indexed: 10/20/2022]
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46
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Silva SG, Oliveira PV, Nóbrega JA, Rocha FÃBRP. Cloud point extraction to avoid interferences by structured background on determination in plant materials by FAAS. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2009; 1:68-70. [PMID: 32938144 DOI: 10.1039/b9ay00010k] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
An analytical procedure based on microwave-assisted digestion with diluted acid and a double cloud point extraction is proposed for nickel determination in plant materials by flame atomic absorption spectrometry. Extraction in micellar medium was successfully applied for sample clean up, aiming to remove organic species containing phosphorous that caused spectral interferences by structured background attributed to the formation of PO species in the flame. Cloud point extraction of nickel complexes formed with 1,2-thiazolylazo-2-naphthol was explored for pre-concentration, with enrichment factor estimated as 30, detection limit of 5 µg L-1 (99.7% confidence level) and linear response up to 80 µg L-1. The accuracy of the procedure was evaluated by nickel determinations in reference materials and the results agreed with the certified values at the 95% confidence level.
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Affiliation(s)
- Sidnei G Silva
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, 05513-970, São Paulo, SP, Brazil.
| | - Pedro V Oliveira
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, 05513-970, São Paulo, SP, Brazil.
| | - Joaquim A Nóbrega
- Departamento de Química, Universidade Federal de São Carlos, P.O. Box 676, 13560-970, São Carlos, SP, Brazil
| | - FÃ Bio R P Rocha
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, 05513-970, São Paulo, SP, Brazil.
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47
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Stege PW, Sombra LL, Messina GA, Martinez LD, Silva MF. Environmental monitoring of phenolic pollutants in water by cloud point extraction prior to micellar electrokinetic chromatography. Anal Bioanal Chem 2009; 394:567-73. [DOI: 10.1007/s00216-009-2719-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2008] [Revised: 02/06/2009] [Accepted: 02/17/2009] [Indexed: 11/28/2022]
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48
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Mahugo Santana C, Sosa Ferrera Z, Esther Torres Padrón M, Juan Santana Rodríguez J. Methodologies for the extraction of phenolic compounds from environmental samples: new approaches. Molecules 2009; 14:298-320. [PMID: 19136918 PMCID: PMC6253767 DOI: 10.3390/molecules14010298] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2008] [Revised: 12/24/2008] [Accepted: 01/04/2009] [Indexed: 11/16/2022] Open
Abstract
Phenolic derivatives are among the most important contaminants present in the environment. These compounds are used in several industrial processes to manufacture chemicals such as pesticides, explosives, drugs and dyes. They also are used in the bleaching process of paper manufacturing. Apart from these sources, phenolic compounds have substantial applications in agriculture as herbicides, insecticides and fungicides. However, phenolic compounds are not only generated by human activity, but they are also formed naturally, e.g., during the decomposition of leaves or wood. As a result of these applications, they are found in soils and sediments and this often leads to wastewater and ground water contamination. Owing to their high toxicity and persistence in the environment, both, the US Environmental Protection Agency (EPA) and the European Union have included some of them in their lists of priority pollutants. Current standard methods of phenolic compounds analysis in water samples are based on liquid–liquid extraction (LLE) while Soxhlet extraction is the most used technique for isolating phenols from solid matrices. However, these techniques require extensive cleanup procedures that are time-intensive and involve expensive and hazardous organic solvents, which are undesirable for health and disposal reasons. In the last years, the use of news methodologies such as solid-phase extraction (SPE) and solid-phase microextraction (SPME) have increased for the extraction of phenolic compounds from liquid samples. In the case of solid samples, microwave assisted extraction (MAE) is demonstrated to be an efficient technique for the extraction of these compounds. In this work we review the developed methods in the extraction and determination of phenolic derivatives in different types of environmental matrices such as water, sediments and soils. Moreover, we present the new approach in the use of micellar media coupled with SPME process for the extraction of phenolic compounds. The advantages of micellar media over conventional extractants are reduction of organic solvent, low cost, easy handling and shorter time procedures.
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Affiliation(s)
- Cristina Mahugo Santana
- Department of Chemistry, Faculty of Marine Sciences, University of Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain.
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