151
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Rapid liquid-phase microextraction of analytes from complex samples on superwetting porous silicon for onsite SALDI-MS analysis. Talanta 2019; 198:63-70. [PMID: 30876603 DOI: 10.1016/j.talanta.2019.01.051] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 11/26/2018] [Accepted: 01/13/2019] [Indexed: 12/30/2022]
Abstract
To simplify the pretreatment process of complex samples is a key step for rapid detection. Herein, we report a single-step method to rapidly extract analytes with liquid-phase microextraction (LPME) from complex samples on a superwetting porous silicon (PSi) for onsite detection with surface-assisted laser desorption/ionization mass spectrometry (SALDI-MS). The operation time is less than 3 min with this simple method. The limit of detection (LOD) of malachite green in lake water is lowered to 10-13 M, that of verapamil and methadone in whole blood is down to 10-11 M and 10-13 M, in urine is 10-13 M and 10-14 M, respectively; and the ranges of quantification is up to 8 or 9 orders of magnitude with high precision (coefficients of determination (R2) > 0.98) for the complex samples. This method could provide an approach to directly extract target compounds from complex samples on substrate for SALDI-MS analysis.
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152
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Dvořák M, Kubáň P. In-line coupling of supported liquid membrane extraction across nanofibrous membrane to capillary electrophoresis for analysis of basic drugs from undiluted body fluids. Electrophoresis 2019; 40:2398-2406. [DOI: 10.1002/elps.201800487] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/11/2018] [Accepted: 12/20/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Miloš Dvořák
- Institute of Analytical Chemistry of the Czech Academy of Sciences; Brno Czech Republic
| | - Pavel Kubáň
- Institute of Analytical Chemistry of the Czech Academy of Sciences; Brno Czech Republic
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153
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Moradi P, Asghari A. Determination of acidic drugs in biological and environmental matrices by membrane-based dual emulsification liquid-phase microextraction followed by high-performance liquid chromatography. J Sep Sci 2019; 42:897-905. [DOI: 10.1002/jssc.201800958] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 11/15/2018] [Accepted: 12/11/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Peyman Moradi
- Department of Chemistry; Semnan University; Semnan Iran
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154
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Three-phase carrier-mediated hollow fiber microextraction based on deep eutectic solvent followed by HPLC–UV for determination of raloxifene and ethinylestradiol in pharmaceutical wastewater treatment plants. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s13738-018-01572-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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155
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Owczarek K, Szczepańska N, Płotka-Wasylka J, Namieśnik J. New Achievements in the Field of Extraction of Trace Analytes from Samples Characterized by Complex Composition of the Matrix. GREEN CHEMISTRY AND SUSTAINABLE TECHNOLOGY 2019. [DOI: 10.1007/978-981-13-9105-7_5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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156
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Li S. Preconcentration and Determination of Psychotropic Drugs in Urine Samples by Ion Mobility Spectrometry with Electrospray Ionization Coupling On-Line Single-Drop Liquid-Liquid-Liquid Microextraction. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2019; 2019:8561801. [PMID: 31827974 PMCID: PMC6885222 DOI: 10.1155/2019/8561801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 10/12/2019] [Accepted: 10/31/2019] [Indexed: 05/05/2023]
Abstract
A method for analysis of psychotropic drugs in urine is investigated using a novel single-drop liquid-liquid-liquid microextraction (SDLLLME) apparatus as an electrospray emitter in ion mobility spectrometry (IMS). In this method, ketamine and pethidine are back-extracted into the acceptor phase (water and methanol) from the water and methanol immiscible organic phase. Sensitivity of extraction is improved as it does not require further methanol-adding procedure. Factors affecting the extraction of psychotropic drugs are characterized, including organic solvent type, extraction time, and concentration of NaOH/Ac in the donor/acceptor phase. The best extraction sensitivity is obtained with 600 μL dodecane as the organic phase, 30 minutes extraction time, and 10 mL donor phase with 0.01 M sodium hydroxide (NaOH) and 3 μL acceptor phase with 0.5 M acetic acid (Ac). Using this method, the two analytes can be extracted and analyzed simultaneously, showing this method is valuable for field application.
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Affiliation(s)
- Shu Li
- National Institutes for Food and Drug Control, Institute for Medical Devices Control, No. 29, HuaTuo Road, Daxing District, Beijing 102629, China
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157
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Highly effective and safe intermediate based on deep eutectic medium for carrier less-three phase hollow fiber microextraction of antiarrhythmic agents in complex matrices. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1104:196-204. [DOI: 10.1016/j.jchromb.2018.11.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 11/03/2018] [Accepted: 11/06/2018] [Indexed: 12/16/2022]
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158
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López-López JA, Mendiguchía C, Pinto JJ, Moreno C. Application of solvent-bar micro-extraction for the determination of organic and inorganic compounds. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2018.10.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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159
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Bristow R, Young I, Pemberton A, Williams J, Maher S. An extensive review of the extraction techniques and detection methods for the taste and odour compound geosmin (trans-1, 10-dimethyl-trans-9-decalol) in water. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2018.10.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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160
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Lemos VA, Oliveira RV, Lopes dos Santos WN, Menezes RM, Santos LB, Costa Ferreira SL. Liquid phase microextraction associated with flow injection systems for the spectrometric determination of trace elements. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2018.11.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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161
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Electromembrane extraction—looking into the future. Anal Bioanal Chem 2018; 411:1687-1693. [DOI: 10.1007/s00216-018-1512-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 11/07/2018] [Accepted: 11/22/2018] [Indexed: 01/15/2023]
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162
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Lin B, Wan L, Sun X, Huang C, Pedersen-Bjergaard S, Shen X. Electromembrane extraction of high level substances: A novel approach for selective recovery of templates in molecular imprinting. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.09.056] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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163
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Hashemi SH, Kaykhaii M, Keikha AJ, Sajjadi Z. Application of Box-Behnken design in response surface methodology for the molecularly imprinted polymer pipette-tip solid phase extraction of methyl red from seawater samples and its determination by spectrophotometery. MARINE POLLUTION BULLETIN 2018; 137:306-314. [PMID: 30503439 DOI: 10.1016/j.marpolbul.2018.10.037] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/08/2018] [Accepted: 10/15/2018] [Indexed: 06/09/2023]
Abstract
In this paper, a rapid, selective and effective technique, pipette-tip solid phase extraction based on molecularly imprinted polymer, was used for extraction and pre-concentration of methyl red (MR) prior to its determination by spectrophotometer. Variables influencing extraction efficiency including type and volume of eluent solvent, sample volume, number of cycles of extraction and elution, amount of sorbent and pH of the sample solution were optimized with two methods of one-variable-at-a-time and response surface methodology (RSM). For RSM optimization, seven factors in three-levels were utilized for Box-Behnken experimental design. Under optimum conditions, a linear calibration graph in the range of 3.0-300.0 μg L-1 for MR was resulted. The limit of detection of proposed method was 0.50 μg L-1 for MR. Finally, the investigated method was used for the determination of MR in seawater and the mean recoveries were calculated to be 84.0-98.0% with mean RSD of 2.5-6.7%.
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Affiliation(s)
- Sayyed Hossein Hashemi
- Department of Marine Chemistry, Faculty of Marine Science, Chabahar Maritime University, Chabahar, Iran.
| | - Massoud Kaykhaii
- Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan, Iran
| | - Ahmad Jamali Keikha
- Department of Mechanical Engineering, Faculty of Marine Engineering, Chabahar Maritime University, Chabahar, Iran
| | - Zahra Sajjadi
- Department of Marine Chemistry, Faculty of Marine Science, Chabahar Maritime University, Chabahar, Iran
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164
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Ahmed OS, Ladner Y, Montels J, Philibert L, Perrin C. Coupling of salting-out assisted liquid–liquid extraction with on-line stacking for the analysis of tyrosine kinase inhibitors in human plasma by capillary zone electrophoresis. J Chromatogr A 2018; 1579:121-128. [DOI: 10.1016/j.chroma.2018.10.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 10/03/2018] [Accepted: 10/13/2018] [Indexed: 01/27/2023]
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165
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Havlikova M, Cabala R, Pacakova V, Bosakova Z. Critical evaluation of microextraction pretreatment techniques-Part 2: Membrane-supported and homogenous phase based techniques. J Sep Sci 2018; 42:303-318. [DOI: 10.1002/jssc.201800903] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 10/08/2018] [Accepted: 10/09/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Martina Havlikova
- Department of Analytical Chemistry; Faculty of Science; Charles University; Prague Czech Republic
| | - Radomir Cabala
- Department of Analytical Chemistry; Faculty of Science; Charles University; Prague Czech Republic
- Toxicology Department; Institute of Forensic Medicine and Toxicology; General University Hospital in Prague and 1st Faculty of Medicine of Charles University; Prague Czech Republic
| | - Vera Pacakova
- Department of Analytical Chemistry; Faculty of Science; Charles University; Prague Czech Republic
| | - Zuzana Bosakova
- Department of Analytical Chemistry; Faculty of Science; Charles University; Prague Czech Republic
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166
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LeBlanc KL, Kumkrong P, Mercier PHJ, Mester Z. Selenium analysis in waters. Part 2: Speciation methods. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 640-641:1635-1651. [PMID: 29935780 DOI: 10.1016/j.scitotenv.2018.05.394] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 05/25/2018] [Accepted: 05/31/2018] [Indexed: 06/08/2023]
Abstract
In aquatic ecosystems, there is often no correlation between the total concentration of selenium present in the water column and the toxic effects observed in that environment. This is due, in part, to the variation in the bioavailability of different selenium species to organisms at the base of the aquatic food chain. The first part of this review (Kumkrong et al., 2018) discusses regulatory framework and standard methodologies for selenium analysis in waters. In this second article, we are reviewing the state of speciation analysis and importance of speciation data for decision makers in industry and regulators. We look in detail at fractionation methods for speciation, including the popular selective sequential hydride generation. We examine advantages and limitations of these methods, in terms of achievable detection limits and interferences from other matrix species, as well as the potential to over- or under-estimate operationally-defined fractions based on the various conversion steps involved in fractionation processes. Additionally, we discuss methods of discrete speciation (through separation methods), their importance in analyzing individual selenium species, difficulties associated with their implementation, as well as ways to overcome these difficulties. We also provide a brief overview of biological treatment methods for the remediation of selenium-contaminated waters. We discuss the importance of selenium speciation in the application of these methods and their potential to actually increase the bioavailability of selenium despite decreasing its total waterborne concentration.
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Affiliation(s)
- Kelly L LeBlanc
- National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario, Canada.
| | - Paramee Kumkrong
- National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario, Canada
| | - Patrick H J Mercier
- National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario, Canada
| | - Zoltán Mester
- National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario, Canada
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167
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Chisvert A, Benedé JL, Salvador A. Current trends on the determination of organic UV filters in environmental water samples based on microextraction techniques – A review. Anal Chim Acta 2018; 1034:22-38. [DOI: 10.1016/j.aca.2018.05.059] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 05/21/2018] [Accepted: 05/22/2018] [Indexed: 01/06/2023]
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168
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Carasek E, Merib J, Mafra G, Spudeit D. A recent overview of the application of liquid-phase microextraction to the determination of organic micro-pollutants. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.09.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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169
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170
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Campos CDM, Reyes FGR, Manz A, da Silva JAF. On-line electroextraction in capillary electrophoresis: Application on the determination of glutamic acid in soy sauces. Electrophoresis 2018; 40:322-329. [DOI: 10.1002/elps.201800203] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 09/14/2018] [Accepted: 09/18/2018] [Indexed: 11/08/2022]
Affiliation(s)
| | - Felix G. R. Reyes
- Department of Food Science; University of Campinas (UNICAMP); Campinas SP Brazil
| | | | - José A. F. da Silva
- Chemistry Institute; University of Campinas (UNICAMP); Campinas SP Brazil
- Instituto Nacional de Ciência e Tecnologia em Bioanalítica (INCTBio); Campinas SP Brazil
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171
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Tabani H, Nojavan S, Alexovič M, Sabo J. Recent developments in green membrane-based extraction techniques for pharmaceutical and biomedical analysis. J Pharm Biomed Anal 2018; 160:244-267. [DOI: 10.1016/j.jpba.2018.08.002] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 08/01/2018] [Accepted: 08/03/2018] [Indexed: 01/11/2023]
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172
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Mahmoudi Alami F, Mousavi HZ, Khaligh A. Simple determination of amphetamine and methamphetamine in complicated matrices by filter-based emulsification microextraction followed by high-performance liquid chromatography. SEPARATION SCIENCE PLUS 2018. [DOI: 10.1002/sscp.201800092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
| | | | - Aisan Khaligh
- Department of Chemistry; Semnan University; Semnan Iran
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173
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Development of a single format membrane assisted solvent extraction-molecularly imprinted polymer technique for extraction of polycyclic aromatic hydrocarbons in wastewater followed by gas chromatography mass spectrometry determination. J Chromatogr A 2018; 1569:36-43. [DOI: 10.1016/j.chroma.2018.07.061] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 07/17/2018] [Accepted: 07/24/2018] [Indexed: 11/22/2022]
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174
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Belinato JR, Dias FFG, Caliman JD, Augusto F, Hantao LW. Opportunities for green microextractions in comprehensive two-dimensional gas chromatography / mass spectrometry-based metabolomics - A review. Anal Chim Acta 2018; 1040:1-18. [PMID: 30327098 DOI: 10.1016/j.aca.2018.08.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 08/15/2018] [Accepted: 08/17/2018] [Indexed: 10/28/2022]
Abstract
Microextractions have become an attractive class of techniques for metabolomics. The most popular technique is solid-phase microextraction that revolutionized the field of modern sample preparation in the early nineties. Ever since this milestone, microextractions have taken on many principles and formats comprising droplets, fibers, membranes, needles, and blades. Sampling devices may be customized to impart exhaustive or equilibrium-based characteristics to the extraction method. Equilibrium-based approaches may rely on additional methods for calibration, such as diffusion-based or on-fiber kinetic calibration to improve bioanalysis. In addition, microextraction-based methods may enable minimally invasive sampling protocols and measure the average free concentration of analytes in heterogeneous multiphasic biological systems. On-fiber derivatization has evidenced new opportunities for targeted and untargeted analysis in metabolomics. All these advantages have highlighted the potential of microextraction techniques for in vivo and on-site sampling and sample preparation, while many opportunities are still available for laboratory protocols. In this review, we outline and discuss some of the most recent applications using microextractions techniques for comprehensive two-dimensional gas chromatography-based metabolomics, including potential research opportunities.
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Affiliation(s)
- João R Belinato
- Institute of Chemistry, University of Campinas, Campinas, SP, 13083-970, Brazil; National Institute of Science and Technology in Bioanalysis (INCTBio), Campinas, SP, 13083-970, Brazil
| | - Fernanda F G Dias
- Institute of Chemistry, University of Campinas, Campinas, SP, 13083-970, Brazil; National Institute of Science and Technology in Bioanalysis (INCTBio), Campinas, SP, 13083-970, Brazil
| | - Jaqueline D Caliman
- Institute of Chemistry, University of Campinas, Campinas, SP, 13083-970, Brazil; National Institute of Science and Technology in Bioanalysis (INCTBio), Campinas, SP, 13083-970, Brazil
| | - Fabio Augusto
- Institute of Chemistry, University of Campinas, Campinas, SP, 13083-970, Brazil; National Institute of Science and Technology in Bioanalysis (INCTBio), Campinas, SP, 13083-970, Brazil
| | - Leandro W Hantao
- Institute of Chemistry, University of Campinas, Campinas, SP, 13083-970, Brazil.
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175
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Nawała J, Dawidziuk B, Dziedzic D, Gordon D, Popiel S. Applications of ionic liquids in analytical chemistry with a particular emphasis on their use in solid-phase microextraction. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.04.010] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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176
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Bazregar M, Rajabi M, Yamini Y, Asghari A. Filter-based emulsification microextraction as an efficient method for the determination of chlorophenols by gas chromatography. J Sep Sci 2018; 41:3097-3104. [DOI: 10.1002/jssc.201800233] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/21/2018] [Accepted: 05/22/2018] [Indexed: 12/31/2022]
Affiliation(s)
| | - Maryam Rajabi
- Department of Chemistry; Semnan University; Semnan Iran
| | - Yadollah Yamini
- Department of Chemistry; Tarbiat Modares University; Tehran Iran
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177
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Huang Y, Huang X, Huang L, Liu Q, Lei Y, Yang L, Huang L. Three-phase solvent bar liquid-phase microextraction combined with high-performance liquid chromatography to determine sarcosine in human urine. J Sep Sci 2018; 41:3121-3128. [PMID: 29878649 DOI: 10.1002/jssc.201800353] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/22/2018] [Accepted: 05/28/2018] [Indexed: 01/31/2023]
Affiliation(s)
- Yuan Huang
- School of Pharmacy, The Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province; Fujian Medical University; Fuzhou Fujian China
| | - Xiaobing Huang
- Fujian Medical University Union Hospital; Fuzhou Fujian China
| | - Liping Huang
- The First Hospital Affiliated to Fujian Medical University; Fuzhou Fujian China
| | - Qicai Liu
- The First Hospital Affiliated to Fujian Medical University; Fuzhou Fujian China
| | - Yun Lei
- School of Pharmacy, The Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province; Fujian Medical University; Fuzhou Fujian China
| | - Lijuan Yang
- School of Pharmacy, The Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province; Fujian Medical University; Fuzhou Fujian China
| | - Liying Huang
- School of Pharmacy, The Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province; Fujian Medical University; Fuzhou Fujian China
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178
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Nazaripour A, Yamini Y, Bagheri H. Extraction and determination of trace amounts of three anticancer pharmaceuticals in urine by three-phase hollow fiber liquid-phase microextraction based on two immiscible organic solvents followed by high-performance liquid chromatography. J Sep Sci 2018; 41:3113-3120. [DOI: 10.1002/jssc.201800183] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 05/24/2018] [Accepted: 05/24/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Ali Nazaripour
- Department of Chemistry, Faculty of Sciences; Tarbiat Modares University; Tehran Iran
| | - Yadollah Yamini
- Department of Chemistry, Faculty of Sciences; Tarbiat Modares University; Tehran Iran
| | - Hasan Bagheri
- Chemical Injuries Research Center, System Biology and Poisoning Institute; Baqiyatallah University of Medical Sciences; Tehran Iran
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179
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Horta RP, do Amaral B, Peralta-Zamora PG, Silva BJG. Evaluation of a Hollow-Fiber Liquid-Phase Microextraction Technique for the Simultaneous Determination of PPI Drugs in Human Plasma by LC-DAD. J Chromatogr Sci 2018; 56:564-573. [PMID: 29608667 DOI: 10.1093/chromsci/bmy023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 03/12/2018] [Indexed: 12/13/2022]
Abstract
This study involved the development, validation and application of a three-phase hollow-fiber liquid-phase microextraction (HF-LPME) and liquid chromatography with diode array detection (LC-DAD) method for the simultaneous determination of the proton pump inhibitor (PPI) drugs omeprazole, pantoprazole and lansoprazole in human plasma. The evaluation of the HF-LPME parameters was crucial for the determination of the drugs and the conditions selected were: 1-octanol as solvent; phosphate buffer at pH 5 as donor phase; borate buffer at pH 10 as acceptor phase; extraction time of 15 min; stirring at 750 rpm and NaCl was added at 5% (w/v). Validation of the method according to US-FDA recommendations showed a good linear range (0.2-2.0 μg/mL) for all analytes, with a determination coefficient >0.9910. Precision was evaluated using intra- and inter-day assays, which showed relative standard deviations (RSD), <15% for all concentrations, with a limit of quantification (LOQ) of 0.2 μg/mL. Accuracy was also assessed at these concentration levels and was in the range from 80 to 130%. Finally, the sensitive, selective and reproducible HF-LPME/LC-DAD developed method was successfully applied to human plasma samples from patients undergoing therapy with the PPI drugs.
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Affiliation(s)
- Rayta Paim Horta
- Departamento de Química, Universidade Federal do Paraná, C.P. 19081, Curitiba, Brazil
| | - Bianca do Amaral
- Departamento de Química, Universidade Federal do Paraná, C.P. 19081, Curitiba, Brazil
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180
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Raza N, Hashemi B, Kim KH, Lee SH, Deep A. Aromatic hydrocarbons in air, water, and soil: Sampling and pretreatment techniques. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.03.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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181
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Jafari S, Hamidi S. Microextraction techniques in antibiotic monitoring in body fluids: Recent trends and future. J LIQ CHROMATOGR R T 2018. [DOI: 10.1080/10826076.2017.1399418] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Samira Jafari
- Department of Pharmaceutical Biomaterial, School of Pharmacy and Medical Biomaterials Research Center (MBRC), Tehran University of Medical Sciences, Tehran, Iran
| | - Samin Hamidi
- Food and Drug Safety Research Center, Tabriz University of Medical Science, Tabriz, Iran
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182
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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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183
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Electromembrane extraction of substances with weakly basic properties: a fundamental study with benzodiazepines. Bioanalysis 2018; 10:769-781. [DOI: 10.4155/bio-2018-0030] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Aim: Electromembrane extraction (EME) of weakly basic benzodiazepines was investigated (-1.47 < pKa < 5.01). Materials & Methods: 96-well EME was performed with strongly acidic conditions in the acceptor solution using 250-mM trifluoroacetic acid to maximize ionization. Results & Conclusion: Recoveries more than 80% were obtained for analytes with pKa > 2, whereas EME was less efficient for substances with pKa < 2. The latter was trapped in the supported liquid membrane due to less acidic pH conditions in the acceptor solution close to the supported liquid membrane. EME followed by UHPLC–MS/MS analysis was evaluated from human plasma, and the results were in compliance with EMA guidelines. Both electrokinetic migration and passive diffusion contributed to mass transfer when performing EME of weakly basic analytes.
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184
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Yue ME, Lin Q, Xu J, Jiang TF. Ionic liquid-based headspace in-tube liquid-phase microextraction coupled with capillary electrophoresis for sensitive detection of phenols. Electrophoresis 2018; 39:1771-1776. [PMID: 29683521 DOI: 10.1002/elps.201800068] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 04/07/2018] [Accepted: 04/15/2018] [Indexed: 12/20/2022]
Abstract
An ionic liquid-based headspace in-tube liquid-phase microextraction (IL-HS-ITLPME) in-line coupled with capillary electrophoresis (CE) is proposed. The method is capable of quantifying trace amounts of phenols in environmental water samples. In the newly developed method, simply by placing a capillary injected with IL in the HS above the aqueous sample, volatile phenols were extracted into the IL acceptor phase in the capillary. After extraction, electrophoresis of the phenols in the capillary was carried out. Extraction parameters such as the extraction time, extraction temperature, ionic strength, volume of the sample solution and IL types were systematically investigated. Under the optimized conditions, enrichment factors for four phenols were from 1510 to 1985. The proposed method provided a good linearity, low limits of detection (below 5.0 ng mL-1 ), and good repeatability of the extractions (RSDs below 6.7%, n = 6). This method was then utilized to analyze two real environmental samples of Xiaoxi Lake and tap water, obtaining acceptable recoveries and precisions. Compared with the usual HS-ITLPME for CE, IL-HS-ITLPME-CE is a simple, low-cost, fast and environmentally friendly pre-concentration technique. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Mei-E Yue
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, China
| | - Qiaoyan Lin
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, China
| | - Jie Xu
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, China
| | - Ting-Fu Jiang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, P. R. China
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185
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Sereshti H, Khorram P, Nouri N. Recent trends in replacement of disperser solvent in dispersive liquid-liquid microextraction methods. SEPARATION AND PURIFICATION REVIEWS 2018. [DOI: 10.1080/15422119.2018.1460851] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Hassan Sereshti
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Parisa Khorram
- Department of Quality Management Systems and Inspection, Standard Research Institute, Karaj, Iran
| | - Nina Nouri
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
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186
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Dvořák M, Seip KF, Pedersen-Bjergaard S, Kubáň P. Semi-automated set-up for exhaustive micro-electromembrane extractions of basic drugs from biological fluids. Anal Chim Acta 2018; 1005:34-42. [DOI: 10.1016/j.aca.2017.11.081] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 11/27/2017] [Accepted: 11/28/2017] [Indexed: 10/18/2022]
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187
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Centrifugeless dispersive liquid-liquid microextraction based on salting-out phenomenon followed by high performance liquid chromatography for determination of Sudan dyes in different species. Food Chem 2018; 244:1-6. [DOI: 10.1016/j.foodchem.2017.10.006] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 06/21/2017] [Accepted: 10/03/2017] [Indexed: 11/24/2022]
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188
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Hamid Y, Fat’Hi MR. A simple vortex-assisted graphene oxide nanosheets dispersive micro-solid phase extraction combined with high-performance liquid chromatography for UV-Vis detection of tramadol in biological samples. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1439960] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Yahya Hamid
- Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Mohammad Reza Fat’Hi
- Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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189
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Ide AH, Nogueira JMF. Hollow fiber microextraction: a new hybrid microextraction technique for trace analysis. Anal Bioanal Chem 2018. [PMID: 29523942 DOI: 10.1007/s00216-018-0971-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
A new hybrid microextraction technique (hollow fiber microextraction) is presented that uses the main concepts and advantages of the modern miniaturized devices used for trace analysis. This novel analytical approach uses devices made of polypropylene membranes (10.0 mm long and 0.6 mm internal diameter) in which convenient organic solvents are embedded that promote fast kinetics during the enrichment process, using the floating sampling technology concept. An innovative analytical cycle is also proposed by use of low-cost disposable devices during the microextraction stage together with a user-friendly ("single liquid desorption step") back-extraction stage in compliance with green analytical chemistry principles. To evaluate the performance of the proposed technique, 18 polycyclic aromatic hydrocarbons (PAHs) were used as model compounds and were monitored by gas chromatography coupled with mass spectrometry. Under optimized experimental conditions, assays performed on 25 mL aqueous samples spiked with the PAHs at trace level yielded average recoveries between (14.5 ± 8.2)% (dibenzo[a,h]anthracene) and (90.4 ± 8.4)% (benzo[a]anthracene) with use of a device in which n-nonane had been embedded. Low detection limits were also achieved (2.50-6.00 ng L-1), as well as good linear dynamic ranges (20.00-2000.00 ng L-1), with suitable coefficients of determination (r2 > 0.9905) and appropriate precision (relative standard deviation below 15%). By use of the standard addition method, the proposed hybrid microextraction technique had remarkable performance to monitor PAHs at the ultratrace level in several types of matrices, including surface water, wastewater, soil, tea, and fish liver samples. From the data obtained, the new hybrid hollow fiber microextraction technique proved to be user-friendly, eco-friendly, cost-effective, and very competitive for routine work. In short, the novel microextraction technique proposed herein is a remarkable alternative to other well-established microextraction techniques for ultratrace analysis of emerging compounds in real matrices. Graphical abstract Innovative analytical procedure for hollow fiber microextraction (HFμE). GC gas chromatography, LD liquid desorption.
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Affiliation(s)
- Alessandra H Ide
- Centro de Química e Bioquímica e Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande Ed. C8, 1749-016, Lisbon, Portugal
| | - José Manuel F Nogueira
- Centro de Química e Bioquímica e Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande Ed. C8, 1749-016, Lisbon, Portugal.
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190
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Tributyl phosphate assisted hollow-fiber liquid-phase microextraction of short-chain fatty acids in microbial degradation fluid using capillary electrophoresis-contactless coupled conductivity detection. J Pharm Biomed Anal 2018; 154:191-197. [PMID: 29550708 DOI: 10.1016/j.jpba.2018.02.058] [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: 01/09/2018] [Revised: 02/24/2018] [Accepted: 02/26/2018] [Indexed: 12/26/2022]
Abstract
A tributyl phosphate assisted hollow-fiber liquid-phase microextraction coupled with capillary electrophoresis-contactless coupled conductivity detection (HF-LPME/CE-C4D) method has been developed for trace analysis of common short-chain fatty acids (SCFAs) without derivatization. Under the optimum conditions, ten SCFAs including a pair of isomers were well separated from their homologous FAs and the main coexisting inorganic anions within 40 min. Tributyl phosphate assisted HF-LPME produced excellent purification and enrichment for the model sample with high-salt matrix, microbial degradation fluid, and the limits of detection could reach 0.072-0.67 ng/mL (S/N = 3). Owing to its high sensitivity, good linearity, and acceptable recovery, this proposed method provided a sensitive and environment-friendly alternative for trace analysis of SCFAs in complicated samples.
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191
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Mahmoudi Alami F, Zavvar Mousavi H, Khaligh A. Filter-Based Low-Toxic Emulsification Microextraction Followed by High-Performance Liquid Chromatography for Determination of Sudan Dyes in Foodstuff Samples. FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-1196-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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192
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Parallel artificial liquid membrane extraction of psychoactive analytes: a novel approach in therapeutic drug monitoring. Bioanalysis 2018; 10:385-395. [DOI: 10.4155/bio-2017-0250] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Aim: Liquid–liquid extraction is widely used in therapeutic drug monitoring of antipsychotics, but difficulties in automation of the technique can result in long operational time. In this paper, parallel artificial liquid membrane extraction was used for extraction of serotonin– and serotonin–norepinephrine reuptake inhibitors from human plasma, and an approach to automate the technique was investigated. Results: Eight model analytes were extracted from 125 μl human plasma with recoveries in the range 72–111% (relative standard deviation [RSD] ≤12.8%). A semiautomated pipettor was successfully utilized in the procedure, reducing the manual handling time. Real patient samples were analyzed with satisfying accuracy. Conclusion: A semiautomated extraction of serotonin–and serotonin–norepinephrine reuptake inhibitors by parallel artificial liquid membrane extraction extraction was successfully performed.
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193
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Herce-Sesa B, López-López JA, Moreno C. Ionic liquid solvent bar micro-extraction of CdCl n(n-2)- species for ultra-trace Cd determination in seawater. CHEMOSPHERE 2018; 193:306-312. [PMID: 29145092 DOI: 10.1016/j.chemosphere.2017.11.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 10/23/2017] [Accepted: 11/01/2017] [Indexed: 06/07/2023]
Abstract
Water analysis of trace metals has been benefited by recent studies on sample preparation by liquid micro-extraction. However, there are still limitations for its application to seawater, such as the need of additives to preserve the sample or the availability of chemical extractants for the selective extraction from highly saline samples. In this work, a three phase solvent bar micro-extraction (3SBME) system containing the ionic liquid trioctylmethylammonium chloride (Aliquat® 336) has been used for isolation and pre-concentration of Cd from seawater samples, due to its ability for ionic exchange of CdCln(n-2)-. The system was optimized to work at the natural pH of seawater, and conditions for application to real samples were 0.18 M Aliquat® 336 dissolved in kerosene with 0.25 M dodecan-1-ol as organic solution, 1.5 M HNO3 as acceptor solution, 60 min extraction time, and 800 rpm stirring speed in the sample. Loss of organic solution into the sample during extraction was evaluated and revealed its dependence on stirring rate and extraction time. Under optimum conditions samples containing Cd 0.09-0.90 nM were pre-concentrated 65 times. GF-AAS was used for metal quantification with a limit of detection of 0.04 nM. Accuracy was successfully evaluated measuring Cd in a seawater certified reference material BCR-403.
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Affiliation(s)
- Belén Herce-Sesa
- Department of Analytical Chemistry, Faculty of Marine and Environmental Sciences, Instituto Universitario de Investigación Marina (INMAR), International Campus of Global Excellence (Cei·Mar), University of Cádiz, Av. República Saharaui, Puerto Real, 11510 Cádiz, Spain
| | - José A López-López
- Department of Analytical Chemistry, Faculty of Marine and Environmental Sciences, Instituto Universitario de Investigación Marina (INMAR), International Campus of Global Excellence (Cei·Mar), University of Cádiz, Av. República Saharaui, Puerto Real, 11510 Cádiz, Spain.
| | - Carlos Moreno
- Department of Analytical Chemistry, Faculty of Marine and Environmental Sciences, Instituto Universitario de Investigación Marina (INMAR), International Campus of Global Excellence (Cei·Mar), University of Cádiz, Av. República Saharaui, Puerto Real, 11510 Cádiz, Spain
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194
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Yang L, Shi Y, Li J, Luan T. In situ derivatization and hollow-fiber liquid-phase microextraction to determine sulfonamides in water using UHPLC with fluorescence detection. J Sep Sci 2018; 41:1651-1662. [DOI: 10.1002/jssc.201701041] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 11/25/2017] [Accepted: 12/17/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Lihua Yang
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering; School of Marine Sciences; Sun Yat-Sen University; Guangzhou China
| | - Yang Shi
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering; School of Marine Sciences; Sun Yat-Sen University; Guangzhou China
| | - Jinjin Li
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center; School of Life Sciences; Sun Yat-Sen University; Guangzhou China
| | - Tiangang Luan
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering; School of Marine Sciences; Sun Yat-Sen University; Guangzhou China
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center; School of Life Sciences; Sun Yat-Sen University; Guangzhou China
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195
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Ge D, Zhang Y, Dai Y, Yang S. Air-assisted dispersive liquid-liquid microextraction based on a new hydrophobic deep eutectic solvent for the preconcentration of benzophenone-type UV filters from aqueous samples. J Sep Sci 2018; 41:1635-1643. [DOI: 10.1002/jssc.201701282] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 12/12/2017] [Accepted: 12/15/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Dandan Ge
- Department of Chemical Science and Technology; Kunming University; Kunming China
| | - Yi Zhang
- Department of Chemical Science and Technology; Kunming University; Kunming China
| | - Yixiu Dai
- Department of Chemical Science and Technology; Kunming University; Kunming China
| | - Shumin Yang
- Department of Chemical Science and Technology; Kunming University; Kunming China
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196
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Chormey DS, Bakırdere S. Principles and Recent Advancements in Microextraction Techniques. FUNDAMENTALS OF QUORUM SENSING, ANALYTICAL METHODS AND APPLICATIONS IN MEMBRANE BIOREACTORS 2018. [DOI: 10.1016/bs.coac.2018.03.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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197
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Kiani M, Qomi M, Hashemian F, Rajabi M. Multivariate optimization of solvent bar microextraction combined with HPLC-UV for determination of trace amounts of vincristine in biological fluids. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1072:397-404. [DOI: 10.1016/j.jchromb.2017.10.054] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 09/25/2017] [Accepted: 10/28/2017] [Indexed: 10/18/2022]
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198
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Guan L, Luo Q, Shi J, Yu W. Application of ionic-liquid-magnetized stirring bar liquid-phase microextraction coupled with HPLC for the determination of naphthoquinones in Zicao. J Sep Sci 2017; 41:868-876. [PMID: 29193775 DOI: 10.1002/jssc.201700970] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 10/28/2017] [Accepted: 11/19/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Lianyue Guan
- Department of Hepatobiliary-Pancreatic Surgery; China-Japan Union Hospital; Jilin University; Changchun P. R. China
| | - Qiang Luo
- Ultrasonography department; China-Japan Union Hospital; Jilin University; Changchun P. R. China
| | - Jiayuan Shi
- Economic and Technological Development Zone; Changchun P. R. China
| | - Wei Yu
- Department of Hand Surgery; China Japan Union Hospital; Jilin University; Changchun P. R. China
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199
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Crego AL, Mateos M, Nozal L. Recent contributions for improving sensitivity in chiral CE. Electrophoresis 2017; 39:67-81. [PMID: 28960403 DOI: 10.1002/elps.201700293] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 09/14/2017] [Accepted: 09/14/2017] [Indexed: 01/02/2023]
Abstract
The flexibility and versatility of the chiral CE are unrivaled and the same instrumentation can be used to separate a diverse range of analytes, both large and small molecules, whether charged or uncharged. However, one of the disadvantages is generally thought to be the poor sensitivity of ultraviolet (UV) detection, which is the most popular among CE detectors. This review focuses on methodologies and applications regarding improvements of sensitivity in chiral CE published in the last 2 years (June 2015 until May 2017). This contribution continues to update this series of biannual reviews, first published in Electrophoresis in 2006. The main body of the review brings a survey of publications organized according to different approaches to detect a low amount of analytes, either by sample treatment procedures or by in-capillary sample preconcentration techniques, both using UV detection, or even by employing detection systems more sensitive than UV absorption, such as LIF or MS. This review provides comprehensive tables listing the new approaches in sensitive chiral CE with categorizing by the fundamental mechanism to enhance the sensitivity, which provide relevant information on the strategies employed. The concluding remarks in the final part of the review evaluate present state of art and the trends for sensitivity enhancement in chiral CE.
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Affiliation(s)
- Antonio Luis Crego
- Department of Analytical Chemistry, Physical Chemistry, and Chemical Engineering, Faculty of Biology, Environmental Sciences, and Chemistry, University of Alcalá, Madrid, Spain
| | - María Mateos
- Institute of Applied Chemistry and Biotechnology, University of Alcalá, Madrid, Spain
| | - Leonor Nozal
- Institute of Applied Chemistry and Biotechnology, University of Alcalá, Madrid, Spain
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200
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Hollow-Fibre-Supported Dispersive Liquid-Liquid Microextraction for Determination of Atrazine and Triclosan in Aqueous Samples. Int J Anal Chem 2017; 2017:1451476. [PMID: 29158736 PMCID: PMC5660808 DOI: 10.1155/2017/1451476] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 08/23/2017] [Accepted: 09/07/2017] [Indexed: 01/26/2023] Open
Abstract
We report the application of the dispersive liquid-liquid microextraction coupled to hollow-fibre membrane-assisted liquid-phase microextraction and its application for extraction of atrazine and triclosan. Under optimum conditions, namely, 25 μL of a 1 : 4 chlorobenzene : ethyl acetate mixture dispersed in 1 mL of aqueous sample, 10% (m/v) NaCl, a magnetic stirrer speed at 600 rpm, and 10 minutes' extraction time with toluene-filled fibre as the acceptor phase, the method demonstrates sufficient figures of merit. These include linearity (R2 ≥ 0.9975), intravial precision (%RSD ≤ 7.6), enrichment factors (127 and 142), limits of detection (0.0081 and 0.0169 µg/mL), and recovery from river water and sewerage (96–101%). The relatively high detection limits are attributed to the flame ionization detector which is less preferred than a mass spectrometer in trace analyses. This is the first report of a homogenous mixture of the dispersed organic solvent in aqueous solutions and its employment in extraction of organic compounds from aqueous solutions. It therefore adds yet another candidate in the pool of miniaturised solvent microextraction techniques.
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