201
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Tobiszewski M, Orłowski A. Multicriteria decision analysis in ranking of analytical procedures for aldrin determination in water. J Chromatogr A 2015; 1387:116-22. [DOI: 10.1016/j.chroma.2015.02.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Revised: 02/02/2015] [Accepted: 02/03/2015] [Indexed: 01/29/2023]
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202
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In situ ionic liquid dispersive liquid–liquid microextraction and determination of Au(III) by flame atomic absorption spectrometry. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2015. [DOI: 10.1007/s13738-015-0605-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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203
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Roldán-Pijuán M, Pedersen-Bjergaard S, Gjelstad A. Parallel artificial liquid membrane extraction of acidic drugs from human plasma. Anal Bioanal Chem 2015; 407:2811-9. [DOI: 10.1007/s00216-015-8505-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 01/15/2015] [Accepted: 01/20/2015] [Indexed: 10/24/2022]
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204
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Lasarte-Aragonés G, Lucena R, Cárdenas S, Valcárcel M. Use of switchable hydrophilicity solvents for the homogeneous liquid-liquid microextraction of triazine herbicides from environmental water samples. J Sep Sci 2015; 38:990-5. [DOI: 10.1002/jssc.201401224] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Revised: 12/20/2014] [Accepted: 12/21/2014] [Indexed: 11/05/2022]
Affiliation(s)
- Guillermo Lasarte-Aragonés
- Department of Analytical Chemistry; Institute of Fine Chemistry and Nanochemistry; Campus de Rabanales; University of Córdoba; Córdoba Spain
| | - Rafael Lucena
- Department of Analytical Chemistry; Institute of Fine Chemistry and Nanochemistry; Campus de Rabanales; University of Córdoba; Córdoba Spain
| | - Soledad Cárdenas
- Department of Analytical Chemistry; Institute of Fine Chemistry and Nanochemistry; Campus de Rabanales; University of Córdoba; Córdoba Spain
| | - Miguel Valcárcel
- Department of Analytical Chemistry; Institute of Fine Chemistry and Nanochemistry; Campus de Rabanales; University of Córdoba; Córdoba Spain
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205
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Sharafi K, Fattahi N, Mahvi AH, Pirsaheb M, Azizzadeh N, Noori M. Trace analysis of some organophosphorus pesticides in rice samples using ultrasound-assisted dispersive liquid-liquid microextraction and high-performance liquid chromatography. J Sep Sci 2015; 38:1010-6. [PMID: 25641828 DOI: 10.1002/jssc.201401209] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 12/17/2014] [Accepted: 12/25/2014] [Indexed: 01/12/2023]
Abstract
An ultrasound-assisted dispersive liquid-liquid microextraction based on solidification of a floating organic drop method followed by high-performance liquid chromatography was developed for the extraction, preconcentration, and determination of trace amounts of organophosphorus pesticides in rice samples. Variables affecting the performance of both steps were thoroughly investigated. Some effective parameters on extraction were studied and optimized. Under the optimum conditions, recoveries for rice sample are in the range of 58.0-66.0%. The calibration graphs are linear in the range of 4-800 μg/kg and, limits of detection and limits of quantification are in the range of 1.5-3 and 4.2-8.5 μg/kg, respectively. The relative standard deviation for 50.0 μg/kg of organophosphorus pesticides in rice sample are in the range of 4.4-5.1% (n = 5). The obtained results show that proposed method is a fast and simple method for the determination of pesticides in cereals.
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Affiliation(s)
- Kiomars Sharafi
- Department of Environmental Health Engineering, Kermanshah University of Medical Sciences, Kermanshah, Iran; Department of Environmental Health Engineering, Tehran University of Medical Science, Tehran, Iran
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206
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López-López JA, Herce-Sesa B, Moreno C. Three-phase solvent bar micro-extraction as an approach to silver ultra-traces speciation in estuarine water samples. Talanta 2015; 132:382-6. [PMID: 25476321 DOI: 10.1016/j.talanta.2014.09.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 09/15/2014] [Accepted: 09/18/2014] [Indexed: 11/27/2022]
Affiliation(s)
- José Antonio López-López
- Department of Analytical Chemistry. Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real, 11510 Cádiz, Spain.
| | - Belén Herce-Sesa
- Department of Analytical Chemistry. Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real, 11510 Cádiz, Spain
| | - Carlos Moreno
- Department of Analytical Chemistry. Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real, 11510 Cádiz, Spain
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207
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Lasarte-Aragonés G, Lucena R, Cárdenas S, Valcárcel M. Use of switchable solvents in the microextraction context. Talanta 2015; 131:645-9. [DOI: 10.1016/j.talanta.2014.08.031] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 08/07/2014] [Accepted: 08/11/2014] [Indexed: 10/24/2022]
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208
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Yan Y, Chen X, Hu S, Bai X. Applications of liquid-phase microextraction techniques in natural product analysis: A review. J Chromatogr A 2014; 1368:1-17. [DOI: 10.1016/j.chroma.2014.09.068] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Revised: 09/24/2014] [Accepted: 09/25/2014] [Indexed: 11/27/2022]
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209
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Raterink RJ, Witkam Y, Vreeken RJ, Ramautar R, Hankemeier T. Gas Pressure Assisted Microliquid–Liquid Extraction Coupled Online to Direct Infusion Mass Spectrometry: A New Automated Screening Platform for Bioanalysis. Anal Chem 2014; 86:10323-30. [DOI: 10.1021/ac502582f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robert-Jan Raterink
- Division of Analytical BioSciences,
Leiden Academic Centre for Drug Research, and Netherlands Metabolomics
Centre, Leiden University, Leiden, The Netherlands
| | - Yoeri Witkam
- Division of Analytical BioSciences,
Leiden Academic Centre for Drug Research, and Netherlands Metabolomics
Centre, Leiden University, Leiden, The Netherlands
| | - Rob J. Vreeken
- Division of Analytical BioSciences,
Leiden Academic Centre for Drug Research, and Netherlands Metabolomics
Centre, Leiden University, Leiden, The Netherlands
| | - Rawi Ramautar
- Division of Analytical BioSciences,
Leiden Academic Centre for Drug Research, and Netherlands Metabolomics
Centre, Leiden University, Leiden, The Netherlands
| | - Thomas Hankemeier
- Division of Analytical BioSciences,
Leiden Academic Centre for Drug Research, and Netherlands Metabolomics
Centre, Leiden University, Leiden, The Netherlands
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210
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Serrano M, Silva M, Gallego M. Fast and “green” method for the analytical monitoring of haloketones in treated water. J Chromatogr A 2014; 1358:232-9. [DOI: 10.1016/j.chroma.2014.06.103] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 06/24/2014] [Accepted: 06/30/2014] [Indexed: 01/23/2023]
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211
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Padrón MET, Afonso-Olivares C, Sosa-Ferrera Z, Santana-Rodríguez JJ. Microextraction techniques coupled to liquid chromatography with mass spectrometry for the determination of organic micropollutants in environmental water samples. Molecules 2014; 19:10320-49. [PMID: 25033059 PMCID: PMC6272018 DOI: 10.3390/molecules190710320] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 07/02/2014] [Accepted: 07/10/2014] [Indexed: 11/17/2022] Open
Abstract
Until recently, sample preparation was carried out using traditional techniques, such as liquid–liquid extraction (LLE), that use large volumes of organic solvents. Solid-phase extraction (SPE) uses much less solvent than LLE, although the volume can still be significant. These preparation methods are expensive, time-consuming and environmentally unfriendly. Recently, a great effort has been made to develop new analytical methodologies able to perform direct analyses using miniaturised equipment, thereby achieving high enrichment factors, minimising solvent consumption and reducing waste. These microextraction techniques improve the performance during sample preparation, particularly in complex water environmental samples, such as wastewaters, surface and ground waters, tap waters, sea and river waters. Liquid chromatography coupled to tandem mass spectrometry (LC/MS/MS) and time-of-flight mass spectrometric (TOF/MS) techniques can be used when analysing a broad range of organic micropollutants. Before separating and detecting these compounds in environmental samples, the target analytes must be extracted and pre-concentrated to make them detectable. In this work, we review the most recent applications of microextraction preparation techniques in different water environmental matrices to determine organic micropollutants: solid-phase microextraction SPME, in-tube solid-phase microextraction (IT-SPME), stir bar sorptive extraction (SBSE) and liquid-phase microextraction (LPME). Several groups of compounds are considered organic micropollutants because these are being released continuously into the environment. Many of these compounds are considered emerging contaminants. These analytes are generally compounds that are not covered by the existing regulations and are now detected more frequently in different environmental compartments. Pharmaceuticals, surfactants, personal care products and other chemicals are considered micropollutants. These compounds must be monitored because, although they are detected in low concentrations, they might be harmful toward ecosystems.
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Affiliation(s)
- Ma Esther Torres Padrón
- Departamento de Química, Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain.
| | - Cristina Afonso-Olivares
- Departamento de Química, Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain.
| | - Zoraida Sosa-Ferrera
- Departamento de Química, Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain.
| | - José Juan Santana-Rodríguez
- Departamento de Química, Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain.
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212
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Yong S, Chen Y, Lee TK, Lee HK. Determination of total thyroxine in human serum by hollow fiber liquid-phase microextraction and liquid chromatography-tandem mass spectrometry. Talanta 2014; 126:163-9. [PMID: 24881548 DOI: 10.1016/j.talanta.2014.03.058] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 03/24/2014] [Accepted: 03/25/2014] [Indexed: 12/19/2022]
Abstract
Determination of total thyroxine in human serum using hollow fiber liquid-phase microextraction (HF-LPME) has been accomplished for the first time. HF-LPME serves as an inexpensive sample pretreatment and the cleanup method that is nearly solvent-free. Thyroxine was extracted through a water immiscible organic solvent immobilized in the wall pores of a polypropylene hollow fiber into 20μl of an aqueous acceptor phase inside the lumen of the hollow fiber. This technique produced extracts that had comparable cleanness with those obtained using solid-phase extraction (SPE). Serum samples with endogenous thyroxine were spiked with isotopically-labeled thyroxine and analyzed by liquid chromatography-tandem mass spectrometry after HF-LPME extraction. Extraction parameters including the organic phase, acid/base concentration of acceptor phase, stirring speed and extraction time were optimized. The calibration range was found to be linear over 1-1000ng/g with the limit of detection (LOD) of 0.3 ng/g. For quantification of total thyroxine in human serum, 6 subsamples were prepared and the results indicated very good precision with a relative standard deviation of <1.3%. The difference from the SPE method was less than 1.2%, with independent t-test showing insignificant bias. Two reference materials of human serum were analyzed, and our obtained values were compared with the reference values. The results showed very good precision with RSD around 0.2% and the deviation from the reference values were -3.1% and -2.1%. The newly developed method is precise, accurate, inexpensive, and environmentally friendly.
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Affiliation(s)
- Sharon Yong
- Chemical Metrology Laboratory, Applied Sciences Group, Health Sciences Authority, 1 Science Park Road, #01-05/06, The Capricorn, Singapore Science Park II, Singapore 117528, Singapore; Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Yizhao Chen
- Chemical Metrology Laboratory, Applied Sciences Group, Health Sciences Authority, 1 Science Park Road, #01-05/06, The Capricorn, Singapore Science Park II, Singapore 117528, Singapore.
| | - Tong Kooi Lee
- Chemical Metrology Laboratory, Applied Sciences Group, Health Sciences Authority, 1 Science Park Road, #01-05/06, The Capricorn, Singapore Science Park II, Singapore 117528, Singapore
| | - Hian Kee Lee
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.
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