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Zhou X, Li X, Xu C, Yang L, Yang G, Guo L. A persulfate oxidation system for removing acid orange from aqueous solution: Evaluation and degradation mechanism. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 322:116054. [PMID: 36058071 DOI: 10.1016/j.jenvman.2022.116054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 08/17/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
Peroxymonosulfate-based advanced oxidation (PMS-AOP) is a promising technology for the degradation of environmental pollutants. PMS can be activated by various transition metals, especially cobalt-based catalysts, but pure cobalt catalyst suffers from severe metal leakage and poor cyclicality. This study synthesized NiCo2O4 using a co-precipitation hydrothermal method. The structures, morphologies, and chemical states of the prepared catalysts were hexagonal sheet structures. The activation of PMS by catalyst (NiCo2O4) is investigated in a PMS/carbonate (PC) system for Orange II degradation. The observed pseudo-first-order rate constants (k1) were assessed by the effects of different water matrices and operation conditions. The results show that kobs with NiCo2O4 were increased by 13 times than that of treatment without NiCo2O4. This was mainly due to Co3+ and Ni3+ act as electron acceptors to capture electrons from the PMS/PC system, forming a good redox cycle with HSO5-/SO5- and oxidizing Co2+/Ni2+ to produce a large amount of more active components (e.g., 1O2 and SO4⋅-). The good reusability and high stability of NiCo2O4 were demonstrated by five recycle tests. These results suggest that the NiCo2O4/PC system is an efficient and stable method of pollution remediation.
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Affiliation(s)
- Xuan Zhou
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 430205, PR China.
| | - Xinyuan Li
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 430205, PR China.
| | - Caixia Xu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 430205, PR China.
| | - Liu Yang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 430205, PR China.
| | - Guangzhong Yang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 430205, PR China.
| | - Li Guo
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 430205, PR China.
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2
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Abed Almonem KI, El-Ashgar NM, Gahal AA. Applications of potentiometric sensors for the determination of malachite green dye in real samples. SENSORS INTERNATIONAL 2022. [DOI: 10.1016/j.sintl.2022.100186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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3
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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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4
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Li Y, Li X, Tang S, Yang Y. Emulsification liquid–liquid micro-extraction based on natural deep eutectic solvent for (triarylmethane) dyes determination. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01184-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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5
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Tkaczyk A, Mitrowska K, Posyniak A. Synthetic organic dyes as contaminants of the aquatic environment and their implications for ecosystems: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 717:137222. [PMID: 32084689 DOI: 10.1016/j.scitotenv.2020.137222] [Citation(s) in RCA: 408] [Impact Index Per Article: 102.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/07/2020] [Accepted: 02/07/2020] [Indexed: 05/18/2023]
Abstract
In recent years interest in the fate of chemical compounds in the aquatic environment has increased. There are many reports of the presence of chemical compounds such as pesticides, steroid hormones or antibiotics in the aquatic environment. At present, little is known about synthetic organic dyes as contaminants of water bodies. These dyes are omnipresent in many application areas from the textile, tannery, cosmetic and food industries to human and veterinary medicine. Their large-scale production and widespread applications have caused synthetic organic dyes to permeate into different compartments of water and soil environment. So far, dyes have been determined in environmental samples such as water, suspended particulate matters, sediment and wild fish. For this reason, they are considered micropollutants of aquatic ecosystems. Due to the toxicological properties and pharmacological activity of some synthetic organic dyes their occurrence in water bodies should be monitored. The hazard potential of synthetic organic dyes should be assessed, especially their influence on aquatic biota, not least because dyes in water ecosystems may pose a threat to animal or human health as higher-order consumers. This review collects scientific data considering application areas, toxicity, sources, environmental occurrence and the fate of synthetic organic dyes and the ecological implications of synthetic organic dyes presence in the total environment. Moreover, analytical methods for dye determination and methods for dye removal from wastewater are described.
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Affiliation(s)
- Angelika Tkaczyk
- Department of Pharmacology and Toxicology, National Veterinary Research Institute (PIWet), Al. Partyzantow 57, Pulawy, Poland.
| | - Kamila Mitrowska
- Department of Pharmacology and Toxicology, National Veterinary Research Institute (PIWet), Al. Partyzantow 57, Pulawy, Poland.
| | - Andrzej Posyniak
- Department of Pharmacology and Toxicology, National Veterinary Research Institute (PIWet), Al. Partyzantow 57, Pulawy, Poland.
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6
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Xiao X, Chen C, Deng J, Wu J, He K, Xiang Z, Yang Y. Analysis of trace malachite green, crystal violet, and their metabolites in zebrafish by surface-coated probe nanoelectrospray ionization mass spectrometry. Talanta 2020; 217:121064. [PMID: 32498869 DOI: 10.1016/j.talanta.2020.121064] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 04/17/2020] [Accepted: 04/19/2020] [Indexed: 02/06/2023]
Abstract
Malachite green (MG) and crystal violet (CV) are the typical triphenylmethane dyes, which are recalcitrant molecules exerting mutagenic and carcinogenic effects on living organisms. Characterization of the residues of MG, CV, and their metabolites in biological organisms is of importance, especially for in vivo and in situ characterization. In this study, a method for determination of trace MG, CV, and their leuco metabolites in zebrafish by surface-coated probe nanoelectrospray ionization mass spectrometry (SCP-nanoESI-MS) was developed. A microscale solid-phase microextraction (SPME) probe was developed and used for extraction and enrichment of trace MG, CV, and their leuco metabolites in zebrafish after exposure. After that, the loaded SPME probe was directly employed for nanoESI-MS analysis under ambient and open-air conditions. Under the optimum conditions, the method demonstrated good linearity, with correlation coefficient values (r2) no less than 0.9925. The limits of detection and quantification were 0.014-0.023 ng mL-1 and 0.046-0.077 ng mL-1, respectively. By using the proposed method, the bioaccumulation of MG and CV in zebrafish was investigated, and the distribution of MG, CV, and their leuco metabolites in different organs of zebrafish was studied. MG, CV, and their leuco metabolites were all found in zebrafish tissues including brain, muscle, heart, and kidney after exposure, with highest concentration in intestine followed in ovary.
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Affiliation(s)
- Xue Xiao
- Guangdong Engineering and Technology Research Center for Ambient Mass Spectrometry, Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis (China National Analytical Center Guangzhou), Guangdong Academy of Sciences, 100 Xianlie Middle Road, Guangzhou, 510070, China
| | - Chao Chen
- Guangdong Engineering and Technology Research Center for Ambient Mass Spectrometry, Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis (China National Analytical Center Guangzhou), Guangdong Academy of Sciences, 100 Xianlie Middle Road, Guangzhou, 510070, China
| | - Jiewei Deng
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, 100 Waihuanxi Road, Guangzhou HEMC, 510006, China
| | - Junhui Wu
- State Key Laboratory of Biocontrol, South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, School of Life Sciences, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou, 510275, China
| | - Kaili He
- Guangdong Engineering and Technology Research Center for Ambient Mass Spectrometry, Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis (China National Analytical Center Guangzhou), Guangdong Academy of Sciences, 100 Xianlie Middle Road, Guangzhou, 510070, China
| | - Zhangmin Xiang
- Guangdong Engineering and Technology Research Center for Ambient Mass Spectrometry, Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis (China National Analytical Center Guangzhou), Guangdong Academy of Sciences, 100 Xianlie Middle Road, Guangzhou, 510070, China.
| | - Yunyun Yang
- Guangdong Engineering and Technology Research Center for Ambient Mass Spectrometry, Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis (China National Analytical Center Guangzhou), Guangdong Academy of Sciences, 100 Xianlie Middle Road, Guangzhou, 510070, China.
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7
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Yao Y, Zhao Y, Zhang X, Yu J, Guo X. Determination of brompheniramine enantiomers in rat plasma by cation-selective exhaustive injection and sweeping cyclodextrin modified electrokinetic chromatography method. Electrophoresis 2018; 39:2099-2106. [PMID: 29756294 DOI: 10.1002/elps.201800138] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 04/19/2018] [Accepted: 04/26/2018] [Indexed: 11/09/2022]
Abstract
A method consisting of cation-selective exhaustive injection and sweeping (CSEI-sweeping) as online preconcentration followed by a cyclodextrin modified electrokinetic chromatography (CDEKC) enantioseparation has been developed for the simultaneous determination of two brompheniramine enantiomers in rat plasma. In this method, analytes were electrokinetically injected at a voltage of 8 kV for 80 s in a fused-silica capillary. Prior to the injection, the capillary was rinsed with 50 mM phosphate buffer of pH 3.5, followed by a plug of a higher conductivity buffer (150 mM phosphate pH 3.5, 20 psi, 6 min) and a plug of water (0.5 psi, 5 s). Separation was carried out applying -20 kV in 50 mM phosphate buffer, pH 3.5, containing 10% v/v ACN and 30 mg/mL sulfated-β-cyclodextrin (S-β-CD). Analytical signals were monitored at 210 nm. The detection sensitivity of brompheniramine enantiomers was enhanced by about 2400-fold compared to the normal injection mode (hydrodynamic injection for 3 s at 0.5 psi, with a BGE of 50 mM phosphate buffer containing 20 mg/mL S-β-CD at pH 3.5), and LLOQ of two enantiomers were both 0.0100 μg/mL. In addition, this method had fairly good repeatability and showed promising capabilities in the application of stereoselective pharmacokinetic investigations for brompheniramine enantiomers in rat.
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Affiliation(s)
- Yaqi Yao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, P. R. China
| | - Yu Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, P. R. China
| | - Xue Zhang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, P. R. China
| | - Jia Yu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, P. R. China
| | - Xingjie Guo
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, P. R. China
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8
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Zhou X, Zhang J, Pan Z, Li D. Review of Methods for the Detection and Determination of Malachite Green and Leuco-Malachite Green in Aquaculture. Crit Rev Anal Chem 2018; 49:1-20. [DOI: 10.1080/10408347.2018.1456314] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Xinhui Zhou
- College of Information and Electrical Engineering, China Agricultural University, Beijing, China
- China-EU Center for Information and Communication Technologies in Agriculture, China Agricultural University, Beijing, China
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture, China Agricultural University, Beijing, China
- Beijing Engineering and Technology Research Center for Internet of Things in Agriculture, China Agricultural University, Beijing, China
| | - Jiaran Zhang
- College of Information and Electrical Engineering, China Agricultural University, Beijing, China
- China-EU Center for Information and Communication Technologies in Agriculture, China Agricultural University, Beijing, China
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture, China Agricultural University, Beijing, China
- Beijing Engineering and Technology Research Center for Internet of Things in Agriculture, China Agricultural University, Beijing, China
| | - Zhongli Pan
- Healthy Processed Foods Research Unit, USDA-ARS-WRRC Albany, California, USA
- Department of Biological and Agricultural Engineering, University of California, Davis, California, USA
| | - Daoliang Li
- College of Information and Electrical Engineering, China Agricultural University, Beijing, China
- China-EU Center for Information and Communication Technologies in Agriculture, China Agricultural University, Beijing, China
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture, China Agricultural University, Beijing, China
- Beijing Engineering and Technology Research Center for Internet of Things in Agriculture, China Agricultural University, Beijing, China
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9
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Yao Y, Zhou L, Li M, Guo X. The cation-selective exhaustive injection and sweeping capillary electrophoresis method for the analysis of chlorpheniramine enantiomers in rat plasma. J Pharm Biomed Anal 2018; 148:142-148. [DOI: 10.1016/j.jpba.2017.09.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 09/11/2017] [Accepted: 09/15/2017] [Indexed: 02/07/2023]
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10
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Alipanahpour Dil E, Ghaedi M, Asfaram A, Zare F, Mehrabi F, Sadeghfar F. Comparison between dispersive solid-phase and dispersive liquid-liquid microextraction combined with spectrophotometric determination of malachite green in water samples based on ultrasound-assisted and preconcentration under multi-variable experimental design optimization. ULTRASONICS SONOCHEMISTRY 2017; 39:374-383. [PMID: 28732958 DOI: 10.1016/j.ultsonch.2017.05.011] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 05/05/2017] [Accepted: 05/06/2017] [Indexed: 06/07/2023]
Abstract
The ultrasound-assisted dispersive solid-phase microextraction (USA-DSPME) and the ultrasound-assisted dispersive liquid-liquid microextraction (USA-DLLME) developed for as an ultra preconcentration and/or technique for the determination of malachite green (MG) in water samples. Central composite design based on analysis of variance and desirability function guide finding best operational conditions and represent dependency of response to variables viz. volume of extraction, eluent and disperser solvent, pH, adsorbent mass and ultrasonication time has significant influence on methods efficiency. Optimum conditions was set for USA-DSPME as: 1mg CNTs/Zn:ZnO@Ni2P-NCs; 4min sonication time and 130μL eluent at pH 6.0. Meanwhile optimum point for USA-DLLME conditions were fixed at pH 6.0; 4min sonication time and 130, 650μL and 10mL of extraction solvent (CHCl3), disperser solvent (ethanol) and sample volume, respectively. Under the above specified best operational conditions, the enrichment factors for the USA-DSPME and USA-DLLME were 88.89 and 147.30, respectively. The methods has linear response in the range of 20.0 to 4000.0ngmL-1 with the correlation coefficients (r) between 0.9980 to 0.9995, while its reasonable detection limits viz. 1.386 to 2.348ngmL-1 and good relative standard deviations varied from 1.1% to 2.8% (n=10) candidate this method for successful monitoring of analyte from various media. The relative recoveries of the MG dye from water samples at spiking level of 500ngmL-1 were in the range between 94.50% and 98.86%. The proposed methods has been successfully applied to the analysis of the MG dye in water samples, and a satisfactory result was obtained.
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Affiliation(s)
| | - Mehrorang Ghaedi
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran.
| | - Arash Asfaram
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran
| | - Fahimeh Zare
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran
| | - Fatemeh Mehrabi
- Young Researchers and Elite Club, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran
| | - Fardin Sadeghfar
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran
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11
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Approaching over 10 000-fold sensitivity increase in chiral capillary electrophoresis: Cation-selective exhaustive injection and sweeping cyclodextrin-modified micellar electrokinetic chromatography. Electrophoresis 2016; 37:2970-2976. [DOI: 10.1002/elps.201600324] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/07/2016] [Accepted: 08/11/2016] [Indexed: 11/07/2022]
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12
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Zhu D, Li Q, Honeychurch KC, Piano M, Chen G. Determination of Malachite Green in Aquaculture Water by Adsorptive Stripping Voltammetry. ANAL LETT 2015. [DOI: 10.1080/00032719.2015.1104321] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Hernández-Mesa M, Airado-Rodríguez D, Cruces-Blanco C, García-Campaña AM. Novel cation selective exhaustive injection-sweeping procedure for 5-nitroimidazole determination in waters by micellar electrokinetic chromatography using dispersive liquid–liquid microextraction. J Chromatogr A 2014; 1341:65-72. [DOI: 10.1016/j.chroma.2014.03.026] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 03/07/2014] [Accepted: 03/10/2014] [Indexed: 10/25/2022]
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14
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El Deeb S, Dawwas HA, Gust R. Recent methodological and instrumental development in MEKC. Electrophoresis 2013; 34:1295-303. [PMID: 23417897 DOI: 10.1002/elps.201200574] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2012] [Revised: 01/04/2013] [Accepted: 01/05/2013] [Indexed: 11/08/2022]
Abstract
The review gives an update about the methodological and instrumental developments in micellar electrokinetic capillary chromatography as a type of CE analytical technique. Here, the last two years development of the technique are particularly presented. Recent approaches to improve sensitivity are discussed. Newly introduced concentration techniques and experimental methods for verification of the different mechanisms and processes of micellar electrokinetic chromatography analysis are highlighted. A theoretical model to explain changes in separation and electrophoretic mobility order of fully charged analytes are demonstrated. Modern approaches for improving compatibility of micellar electrokinetic capillary chromatography to mass spectrometry are also reported.
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Affiliation(s)
- Sami El Deeb
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
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15
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Zhang Z, Zhang F, Liu Y. Recent Advances in Enhancing the Sensitivity and Resolution of Capillary Electrophoresis. J Chromatogr Sci 2013; 51:666-83. [DOI: 10.1093/chromsci/bmt012] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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16
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Determination of crystal violet in seawater and seafood samples through off-line molecularly imprinted SPE followed by HPLC with diode-array detection. J Sep Sci 2013; 36:980-5. [DOI: 10.1002/jssc.201200939] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 11/14/2012] [Accepted: 11/21/2012] [Indexed: 11/07/2022]
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17
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Anres P, Delaunay N, Vial J, Thormann W, Gareil P. Influence of high-conductivity buffer composition on field-enhanced sample injection coupled to sweeping in CE. Electrophoresis 2013; 34:353-62. [DOI: 10.1002/elps.201200374] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 09/25/2012] [Accepted: 09/25/2012] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | - Wolfgang Thormann
- Clinical Pharmacology Laboratory, Institute for Infectious Diseases; University of Bern; Bern; Switzerland
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18
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Silva M. Micellar electrokinetic chromatography: A review of methodological and instrumental innovations focusing on practical aspects. Electrophoresis 2012; 34:141-58. [DOI: 10.1002/elps.201200349] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 07/25/2012] [Accepted: 07/25/2012] [Indexed: 12/20/2022]
Affiliation(s)
- Manuel Silva
- Department of Analytical Chemistry, Rabanales Campus; University of Cordoba; Cordoba; Spain
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Anres P, Delaunay N, Vial J, Gareil P. A chemometric approach for the elucidation of the parameter impact in the hyphenation of field-enhanced sample injection and sweeping in capillary electrophoresis. Electrophoresis 2012; 33:1169-81. [DOI: 10.1002/elps.201100483] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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20
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Wang Q, Qiu H, Han H, Liu X, Jiang S. Two-step stacking by sweeping and micelle to solvent stacking using a long-chain cationic ionic liquid surfactant. J Sep Sci 2012; 35:589-95. [DOI: 10.1002/jssc.201100759] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Affiliation(s)
- Matthew Geiger
- University of Minnesota, Department of Chemistry, 207
Pleasant Street South East, Minneapolis, Minnesota 55455, United States
| | - Amy L. Hogerton
- University of Minnesota, Department of Chemistry, 207
Pleasant Street South East, Minneapolis, Minnesota 55455, United States
| | - Michael T. Bowser
- University of Minnesota, Department of Chemistry, 207
Pleasant Street South East, Minneapolis, Minnesota 55455, United States
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22
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Cheng C, Tsai HR. Application of simple on-line sweeping sample concentration technique coupled micellar electrokinetic chromatography for simultaneous analysis of estrogen and androgen epimer. J Pharm Biomed Anal 2011; 56:728-35. [DOI: 10.1016/j.jpba.2011.07.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Revised: 07/14/2011] [Accepted: 07/21/2011] [Indexed: 02/05/2023]
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23
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Shen YD, Deng XF, Xu ZL, Wang Y, Lei HT, Wang H, Yang JY, Xiao ZL, Sun YM. Simultaneous determination of malachite green, brilliant green and crystal violet in grass carp tissues by a broad-specificity indirect competitive enzyme-linked immunosorbent assay. Anal Chim Acta 2011; 707:148-54. [DOI: 10.1016/j.aca.2011.09.006] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Revised: 09/01/2011] [Accepted: 09/07/2011] [Indexed: 10/17/2022]
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24
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Bahram M, Keshvari F, Najafi-Moghaddam P. Development of cloud point extraction using pH-sensitive hydrogel for preconcentration and determination of malachite green. Talanta 2011; 85:891-6. [DOI: 10.1016/j.talanta.2011.04.074] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2011] [Revised: 04/27/2011] [Accepted: 04/28/2011] [Indexed: 10/18/2022]
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25
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Robaina NF, Reis LGTD, Cassella RJ. Diffuse reflectance determination of Malachite Green using polyurethane foam as solid support and sodium dodecylsulfate as counter ion. Talanta 2011; 85:749-53. [DOI: 10.1016/j.talanta.2011.04.065] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 04/05/2011] [Accepted: 04/23/2011] [Indexed: 11/16/2022]
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26
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Malá Z, Gebauer P, Boček P. Contemporary sample stacking in analytical electrophoresis. Electrophoresis 2010; 32:116-26. [DOI: 10.1002/elps.201000327] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Revised: 08/09/2010] [Accepted: 08/09/2010] [Indexed: 12/31/2022]
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27
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Chen M, Xia Q, Liu M, Yang Y. Cloud-point extraction and reversed-phase high-performance liquid chromatography for the determination of synthetic phenolic antioxidants in edible oils. J Food Sci 2010; 76:C98-103. [PMID: 21535661 DOI: 10.1111/j.1750-3841.2010.01914.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A cloud-point extraction (CPE) method using Triton X-114 (TX-114) nonionic surfactant was developed for the extraction and preconcentration of propyl gallate (PG), tertiary butyl hydroquinone (TBHQ), butylated hydroxyanisole (BHA), and butylated hydroxytoluene (BHT) from edible oils. The optimum conditions of CPE were 2.5% (v/v) TX-114, 0.5% (w/v) NaCl and 40 min equilibration time at 50 °C. The surfactant-rich phase was then analyzed by reversed-phase high-performance liquid chromatography with ultraviolet detection at 280 nm, using a gradient mobile phase consisting of methanol and 1.5% (v/v) acetic acid. Under the studied conditions, 4 synthetic phenolic antioxidants (SPAs) were successfully separated within 24 min. The limits of detection (LOD) were 1.9 ng mL(-1) for PG, 11 ng mL(-1) for TBHQ, 2.3 ng mL(-1) for BHA, and 5.9 ng mL(-1) for BHT. Recoveries of the SPAs spiked into edible oil were in the range 81% to 88%. The CPE method was shown to be potentially useful for the preconcentration of the target analytes, with a preconcentration factor of 14. Moreover, the method is simple, has high sensitivity, consumes much less solvent than traditional methods, and is environment-friendly. Practical Application: The method established in this article uses less organic solvent to extract SPAs from edible oils; it is simple, highly sensitive and results in no pollution to the environment.
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Affiliation(s)
- Miao Chen
- Faculty of Life Science and Technology, Kunming Univ. of Science and Technology, Yunnan Province 650224, China
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Breadmore MC, Dawod M, Quirino JP. Recent advances in enhancing the sensitivity of electrophoresis and electrochromatography in capillaries and microchips (2008-2010). Electrophoresis 2010; 32:127-48. [PMID: 21171119 DOI: 10.1002/elps.201000412] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Revised: 09/15/2010] [Accepted: 09/16/2010] [Indexed: 01/22/2023]
Abstract
Capillary electrophoresis has been alive for over two decades now; yet, its sensitivity is still regarded as being inferior to that of more traditional methods of separation such as HPLC. As such, it is unsurprising that overcoming this issue still generates much scientific interest. This review continues to update this series of reviews, first published in Electrophoresis in 2007, with an update published in 2009 and covers material published through to June 2010. It includes developments in the fields of stacking, covering all methods from field-amplified sample stacking and large volume sample stacking, through to ITP, dynamic pH junction and sweeping. Attention is also given to on-line or in-line extraction methods that have been used for electrophoresis.
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Affiliation(s)
- Michael C Breadmore
- Australian Centre for Research on Separation Science, School of Chemistry, University of Tasmania, Hobart, TAS, Australia.
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Yang Y, Nie H, Li C, Bai Y, Li N, Liao J, Liu H. On-line concentration and determination of tobacco-specific N-nitrosamines by cation-selective exhaustive injection-sweeping-micellar electrokinetic chromatography. Talanta 2010; 82:1797-801. [PMID: 20875579 DOI: 10.1016/j.talanta.2010.07.075] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Revised: 07/23/2010] [Accepted: 07/28/2010] [Indexed: 10/19/2022]
Abstract
In this paper, a micellar electrokinetic chromatography (MEKC) method combined with cation-selective exhaustive injection (CSEI) and sweeping was developed to separate and concentrate four tobacco-specific N-nitrosamines (TSNAs) including N'-nitrosoanabasine (NAB), 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK), 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL) and 4-(methylnitrosamino)-4-(3-pyridyl)-1-butanol (iso-NNAL). Experimental parameters affecting separation efficiency and enhancement factors were investigated in detail. Under the optimum MEKC condition, NAB, NNK, NNAL and iso-NNAL were baseline separated with high separation efficiencies and good peak shapes. Furthermore, with the preconcentration by CSEI-sweeping-MEKC, the sensitivity enhancement factors for NAB, NNK, NNAL and iso-NNAL in terms of peak areas ranged from 6.0×10(3) to 1.5×10(4), and the detection limits (LOD, S/N=3) of four TSNAs were in the range of 0.004-0.016μg/mL. In addition, this method had fairly good repeatability, and the RSDs of retention time and peak area were less than 1% and 5%, respectively. Finally, this method showed promising capabilities in the application of detecting and analyzing TSNAs in human urine samples.
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Affiliation(s)
- Youyou Yang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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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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