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Alimzhanova M, Mamedova M, Ashimuly K, Alipuly A, Adilbekov Y. Miniaturized solid-phase microextraction coupled with gas chromatography-mass spectrometry for determination of endocrine disruptors in drinking water. Food Chem X 2022; 14:100345. [PMID: 35663598 PMCID: PMC9156867 DOI: 10.1016/j.fochx.2022.100345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 05/11/2022] [Accepted: 05/21/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Mereke Alimzhanova
- al-Farabi Kazakh National University, Faculty of Physics and Technology, 71 al-Farabi Ave., 050040 Almaty, Kazakhstan
- Center of Physical Chemical Methods of Research and Analysis, al-Farabi Kazakh National University, 050012 Almaty, Kazakhstan
- Corresponding author.
| | - Madina Mamedova
- al-Farabi Kazakh National University, Faculty of Physics and Technology, 71 al-Farabi Ave., 050040 Almaty, Kazakhstan
- Center of Physical Chemical Methods of Research and Analysis, al-Farabi Kazakh National University, 050012 Almaty, Kazakhstan
| | - Kazhybek Ashimuly
- Center of Physical Chemical Methods of Research and Analysis, al-Farabi Kazakh National University, 050012 Almaty, Kazakhstan
| | - Alham Alipuly
- Center of Physical Chemical Methods of Research and Analysis, al-Farabi Kazakh National University, 050012 Almaty, Kazakhstan
| | - Yerlan Adilbekov
- Center of Physical Chemical Methods of Research and Analysis, al-Farabi Kazakh National University, 050012 Almaty, Kazakhstan
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Cruz JC, Souza IDD, Lanças FM, Queiroz MEC. Current advances and applications of online sample preparation techniques for miniaturized liquid chromatography systems. J Chromatogr A 2022; 1668:462925. [DOI: 10.1016/j.chroma.2022.462925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/25/2022] [Accepted: 02/27/2022] [Indexed: 10/19/2022]
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3
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Kataoka H. In-tube solid-phase microextraction: Current trends and future perspectives. J Chromatogr A 2020; 1636:461787. [PMID: 33359971 DOI: 10.1016/j.chroma.2020.461787] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 12/02/2020] [Accepted: 12/04/2020] [Indexed: 01/01/2023]
Abstract
In-tube solid-phase microextraction (IT-SPME) was developed about 24 years ago as an effective sample preparation technique using an open tubular capillary column as an extraction device. IT-SPME is useful for micro-concentration, automated sample cleanup, and rapid online analysis, and can be used to determine the analytes in complex matrices simple sample processing methods such as direct sample injection or filtration. IT-SPME is usually performed in combination with high-performance liquid chromatography using an online column switching technology, in which the entire process from sample preparation to separation to data analysis is automated using the autosampler. Furthermore, IT-SPME minimizes the use of harmful organic solvents and is simple and labor-saving, making it a sustainable and environmentally friendly green analytical technique. Various operating systems and new sorbent materials have been developed to improve its extraction efficiency by, for example, enhancing its sorption capacity and selectivity. In addition, IT-SPME methods have been widely applied in environmental analysis, food analysis and bioanalysis. This review describes the present state of IT-SPME technology and summarizes its current trends and future perspectives, including method development and strategies to improve extraction efficiency.
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Affiliation(s)
- Hiroyuki Kataoka
- School of Pharmacy, Shujitsu University, Nishigawara, Okayama 703-8516, Japan.
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Innovations in Extractive Phases for In-Tube Solid-Phase Microextraction Coupled to Miniaturized Liquid Chromatography: A Critical Review. Molecules 2020; 25:molecules25102460. [PMID: 32466305 PMCID: PMC7287690 DOI: 10.3390/molecules25102460] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 05/19/2020] [Accepted: 05/22/2020] [Indexed: 02/06/2023] Open
Abstract
Over the past years, a great effort has been devoted to the development of new sorbents that can be used to pack or to coat extractive capillaries for in-tube solid-phase microextraction (IT-SPME). Many of those efforts have been focused on the preparation of capillaries for miniaturized liquid chromatography (LC) due to the reduced availability of capillary columns with appropriate dimensions for this kind of system. Moreover, many of the extractive capillaries that have been used for IT-SPME so far are segments of open columns from the gas chromatography (GC) field, but the phase nature and dimensions are very limited. In particular, polar compounds barely interact with stationary GC phases. Capillary GC columns may also be unsuitable when highly selective extractions are needed. In this work, we provide an overview of the extractive capillaries that have been specifically developed for capillary LC (capLC) and nano LC (nanoLC) to enhance the overall performance of the IT-SPME, the chromatographic separation, and the detection. Different monolithic polymers, such as silica C18 and C8 polymers, molecularly imprinted polymers (MIPs), polymers functionalized with antibodies, and polymers reinforced with different types of carbon nanotubes, metal, and metal oxide nanoparticles (including magnetic nanoparticles), and restricted access materials (RAMs) will be presented and critically discussed.
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Serra-Mora P, Moliner-Martínez Y, Molins-Legua C, Herráez-Hernández R, Verdú-Andrés J, Campíns-Falcó P. Trends in Online Intube Solid Phase Microextraction. COMPREHENSIVE ANALYTICAL CHEMISTRY 2017. [DOI: 10.1016/bs.coac.2017.01.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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6
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Fernández-Amado M, Prieto-Blanco M, López-Mahía P, Muniategui-Lorenzo S, Prada-Rodríguez D. A novel and cost-effective method for the determination of fifteen polycyclic aromatic hydrocarbons in low volume rainwater samples. Talanta 2016; 155:175-84. [DOI: 10.1016/j.talanta.2016.04.032] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 04/12/2016] [Accepted: 04/16/2016] [Indexed: 10/21/2022]
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7
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Moliner-Martinez Y, Herráez-Hernández R, Verdú-Andrés J, Molins-Legua C, Campíns-Falcó P. Recent advances of in-tube solid-phase microextraction. Trends Analyt Chem 2015. [DOI: 10.1016/j.trac.2015.02.020] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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8
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Moliner-Martínez Y, Serra-Mora P, Verdú-Andrés J, Herráez-Hernández R, Campíns-Falcó P. Analysis of polar triazines and degradation products in waters by in-tube solid-phase microextraction and capillary chromatography: an environmentally friendly method. Anal Bioanal Chem 2014; 407:1485-97. [DOI: 10.1007/s00216-014-8366-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 11/10/2014] [Accepted: 11/21/2014] [Indexed: 12/27/2022]
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9
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Wang Y, Fan Z. Dispersive Liquid–Liquid Microextraction Combined with Micellar Electrokinetic Chromatography for the Determination of Pesticide in Apple Sample. J DISPER SCI TECHNOL 2014. [DOI: 10.1080/01932691.2013.859623] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Determination of organophosphorus pesticides using dispersive liquid-liquid microextraction combined with reversed electrode polarity stacking mode-micellar electrokinetic chromatography. Talanta 2012; 98:62-8. [PMID: 22939129 DOI: 10.1016/j.talanta.2012.06.043] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 06/16/2012] [Accepted: 06/18/2012] [Indexed: 11/20/2022]
Abstract
A rapid and sensitive method using two preconcentration techniques, dispersive liquid-liquid microextraction (DLLME) followed by reversed electrode polarity stacking mode (REPSM) was developed for the analysis of five organophosphorus pesticides (OPPs) by micellar electrokinetic chromatography (MEKC). Parameters that affect the efficiency of the extraction in DLLME and preconcentration by REPSM, such as the kind and volume of the extraction and disperser solvents, salt addition, sample matrix and injection time were investigated and optimized. Under the optimum conditions, the enrichment factors were obtained in the range from 477 to 635. The linearity of the method for parathion, azinphos and fenitrithion was in the range of 20-1000 ng mL(-1), and for malathion and diazinon in the range of 50-1000 ng mL(-1), with correlation coefficients (r(2)) ranging from 0.9931 to 0.9992. The limits of detecton (LODs) at a signal-to-noice ratio of 3 ranged from 3 to 15 ng mL(-1). The relative recoveries of five OPPs from water samples at spiking levels of 20 and 200 ng mL(-1) for parathion, azinphos and fenitrithion, and 50 and 500 ng mL(-1) for malathion and diazinon, were 69.5-103%. The proposed method provided high enrichment factors, good precision and accuracy with a short analysis time.
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Onghena M, Moliner-Martinez Y, Picó Y, Campíns-Falcó P, Barceló D. Analysis of 18 perfluorinated compounds in river waters: Comparison of high performance liquid chromatography–tandem mass spectrometry, ultra-high-performance liquid chromatography–tandem mass spectrometry and capillary liquid chromatography–mass spectrometry. J Chromatogr A 2012; 1244:88-97. [DOI: 10.1016/j.chroma.2012.04.056] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 04/20/2012] [Accepted: 04/23/2012] [Indexed: 11/15/2022]
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12
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Cobzac SC, Gocan S. CHROMATOGRAPHY: RECENT PROGRESS. J LIQ CHROMATOGR R T 2012. [DOI: 10.1080/10826076.2011.647193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Cobzac SC, Gocan S. SAMPLE PREPARATION FOR HIGH PERFORMANCE LIQUID CHROMATOGRAPHY: RECENT PROGRESS. J LIQ CHROMATOGR R T 2011. [DOI: 10.1080/10826076.2011.588064] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Simona Codruta Cobzac
- a Department of Analytical Chemistry, Faculty of Chemistry and Chemical Engineering , Babes-Bolyai University , Cluj Napoca, Romania
| | - Simion Gocan
- a Department of Analytical Chemistry, Faculty of Chemistry and Chemical Engineering , Babes-Bolyai University , Cluj Napoca, Romania
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Seebunrueng K, Santaladchaiyakit Y, Soisungnoen P, Srijaranai S. Catanionic surfactant ambient cloud point extraction and high-performance liquid chromatography for simultaneous analysis of organophosphorus pesticide residues in water and fruit juice samples. Anal Bioanal Chem 2011; 401:1703-12. [DOI: 10.1007/s00216-011-5214-x] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Accepted: 06/24/2011] [Indexed: 11/29/2022]
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15
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Wang Y, Wang Z, Zhang H, Shi Y, Ren R, Zhang H, Yu Y. Application of pneumatic nebulization single-drop microextraction for the determination of organophosphorous pesticides by gas chromatography-mass spectrometry. J Sep Sci 2011; 34:1880-5. [DOI: 10.1002/jssc.201100230] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Revised: 03/29/2011] [Accepted: 05/08/2011] [Indexed: 11/06/2022]
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Martí N, Aguado D, Segovia-Martínez L, Bouzas A, Seco A. Occurrence of priority pollutants in WWTP effluents and Mediterranean coastal waters of Spain. MARINE POLLUTION BULLETIN 2011; 62:615-625. [PMID: 21295317 DOI: 10.1016/j.marpolbul.2011.01.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2010] [Revised: 12/28/2010] [Accepted: 01/05/2011] [Indexed: 05/30/2023]
Abstract
A comprehensive study aimed at evaluating the occurrence, significance of concentrations and spatial distribution of priority pollutants (PPs) along the Comunidad Valenciana coastal waters (Spain) was carried out in order to fulfil the European Water Framework Directive (WFD). Additionally, PP concentrations were also analysed in the effluent of 28 WWTPs distributed along the studied area. In coastal waters 36 organic pollutants of the 71 analysed, including 26 PPs were detected although many of them with low frequency of occurrence. Only 13 compounds, which belong to four different classes (VOCs, organochlorinated pesticides, phthalates and tributyltin compounds (TBT)) showed a frequency of occurrence above 20% in coastal waters. In the results obtained until now, octylphenol, pentachlorobenzene, DEHP and TBT exceeded the annual average concentration (EQS-AAC), and only TBT surpassed the maximum allowable concentration (EQS-MAC). The most frequent contaminants determined in coastal waters were also present in WWTP effluents.
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Affiliation(s)
- N Martí
- Dpto. Ingeniería Química, Universidad de Valencia, Doctor Moliner 50, 46100 Burjassot, Valencia, Spain.
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Molaabasi F, Talebpour Z. Enantiomeric discrimination and quantification of the chiral organophosphorus pesticide fenamiphos in aqueous samples by a novel and selective ³¹P nuclear magnetic resonance spectroscopic method using cyclodextrins as chiral selector. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:803-808. [PMID: 21192704 DOI: 10.1021/jf103169p] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A rapid, selective, and accurate quantitative ³¹P nuclear magnetic resonance (³¹P NMR) spectroscopy method was used for the chiral recognition of the racemic organophosphorus pesticide fenamiphos using chiral solvating agents (CSAs). Six neutral cyclodextrins (CDs) (α-CD, β-CD, methyl-β-CD, hydroxyethyl-β-CD, hydroxypropyl-β-CD, and hydroxypropyl-γ-CD) and two anionic CDs (carboxymethyl-β-CD and carboxyethyl-β-CD) were selected for these experiments. The shift displacement values (Δδ), after addition of each of the eight CDs in the highest possible molar ratio to a guest, were recorded. The results showed that β-CD and hydroxypropyl-β-CD were the best chiral solvating agents for the enantiomeric discrimination of fenamiphos. Two-dimension rotating frame nuclear Overhauser spectroscopy (ROESY) was used to investigate the structure of the β-CD-fenamiphos inclusion complex in aqueous solution. To determine the fenamiphos enantiomers, a calibration curve was drawn for two enantiomers over the range of 0.05-0.25 mg mL⁻¹. The limits of detection (S/N = 3) were obtained as 0.0068 and 0.0060 mg mL⁻¹ for fenamiphos enantiomers. The recovery studies were performed on aqueous real samples ranging from 94 to 107% with coefficients of variation of ≤ 9%.
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Affiliation(s)
- Fatemeh Molaabasi
- Department of Chemistry, Faculty of Science, Alzahra University, Vanak, Tehran, Iran
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Moliner-Martinez Y, Herráez-Hernández R, Molins-Legua C, Campins-Falcó P. Improving analysis of apolar organic compounds by the use of a capillary titania-based column: Application to the direct determination of faecal sterols cholesterol and coprostanol in wastewater samples. J Chromatogr A 2010; 1217:4682-7. [DOI: 10.1016/j.chroma.2010.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2010] [Revised: 04/23/2010] [Accepted: 05/03/2010] [Indexed: 12/01/2022]
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Chen J, Duan C, Guan Y. Sorptive extraction techniques in sample preparation for organophosphorus pesticides in complex matrices. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:1216-25. [DOI: 10.1016/j.jchromb.2010.02.031] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2009] [Revised: 02/25/2010] [Accepted: 02/27/2010] [Indexed: 10/19/2022]
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In-tube solid-phase microextraction coupled by in valve mode to capillary LC-DAD: Improving detectability to multiresidue organic pollutants analysis in several whole waters. J Chromatogr A 2010; 1217:2695-702. [DOI: 10.1016/j.chroma.2010.01.018] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Accepted: 01/06/2010] [Indexed: 11/22/2022]
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21
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Fatemi MH, Ghorbanzad'e M, Baher E. Quantitative Structure Retention Relationship Modeling of Retention Time for Some Organic Pollutants. ANAL LETT 2010. [DOI: 10.1080/00032710903486294] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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22
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Kataoka H, Ishizaki A, Nonaka Y, Saito K. Developments and applications of capillary microextraction techniques: A review. Anal Chim Acta 2009; 655:8-29. [DOI: 10.1016/j.aca.2009.09.032] [Citation(s) in RCA: 147] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2009] [Revised: 09/19/2009] [Accepted: 09/22/2009] [Indexed: 11/30/2022]
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Prieto-Blanco MC, López-Mahía P, Campíns-Falcó P. In-Tube Solid-Phase Microextraction and Liquid Chromatography Using a Monolithic Column for the Selective Determination of Residual Ethylenediamine in Industrial Cationic Polymers. Anal Chem 2009; 81:5827-32. [DOI: 10.1021/ac900796j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. C. Prieto-Blanco
- Departamento Química Analítica, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira, E-15071 A Coruña, Spain and Departament de Química Analítica, Facultat de Química, Universitat de Valencia, C/Dr. Moliner 50, E46100 Burjassot, Valencia, Spain
| | - P. López-Mahía
- Departamento Química Analítica, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira, E-15071 A Coruña, Spain and Departament de Química Analítica, Facultat de Química, Universitat de Valencia, C/Dr. Moliner 50, E46100 Burjassot, Valencia, Spain
| | - P. Campíns-Falcó
- Departamento Química Analítica, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira, E-15071 A Coruña, Spain and Departament de Química Analítica, Facultat de Química, Universitat de Valencia, C/Dr. Moliner 50, E46100 Burjassot, Valencia, Spain
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Hernández-Soriano MC, Mingorance MD, Peña A. Dissipation of insecticides in a Mediterranean soil in the presence of wastewater and surfactant solutions. A kinetic model approach. WATER RESEARCH 2009; 43:2481-2492. [PMID: 19349059 DOI: 10.1016/j.watres.2009.03.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2008] [Revised: 03/11/2009] [Accepted: 03/12/2009] [Indexed: 05/27/2023]
Abstract
The simultaneous disappearance of four organophosphorous insecticides in a Mediterranean calcareous soil was evaluated in the presence of surfactant solutions and municipal wastewater. A cationic, an anionic and a non-ionic surfactant were used at a low (0.75 mg L(-1)) and at a high (twice the critical micelle concentration) concentration level. The cationic surfactant was also studied at a higher concentration. Dissipation in control soil was rapid for malathion (half-life 4 days), intermediate for dimethoate and methidathion (ca. 6 days) and slow for diazinon (29 days). Wastewater did either not modify (diazinon, dimethoate and methidathion) or slightly enhance (malathion) insecticide decay. The increase in concentration of the non-ionic surfactant Tween 80 resulted in enhanced dissipation rates for all the pesticides except diazinon. The addition of the anionic surfactant did not show a clear trend. At the highest cationic surfactant concentration a reduction of pesticide disappearance occurred linked with a reduced availability, since the insecticides were retained on the surfactant-modified soil (final residual concentration of 85% for diazinon and approximately 55% for methidathion and dimethoate). Soil microbial activity, estimated by measuring dehydrogenase activity, was low in wastewater- and surfactant-treated soil at the high levels. Fitting of the experimental data to commonly used mathematical models was poor and alternatives were looked for.
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Li T, Xu J, Wu JH, Feng YQ. Liquid-phase deposition of silica nanoparticles into a capillary for in-tube solid-phase microextraction coupled with high-performance liquid chromatography. J Chromatogr A 2009; 1216:2989-95. [DOI: 10.1016/j.chroma.2009.01.076] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2008] [Revised: 01/18/2009] [Accepted: 01/21/2009] [Indexed: 10/21/2022]
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Campíns-Falcó P, Verdú-Andrés J, Sevillano-Cabeza A, Molins-Legua C, Herráez-Hernández R. New micromethod combining miniaturized matrix solid-phase dispersion and in-tube in-valve solid-phase microextraction for estimating polycyclic aromatic hydrocarbons in bivalves. J Chromatogr A 2008; 1211:13-21. [DOI: 10.1016/j.chroma.2008.09.074] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2008] [Revised: 09/22/2008] [Accepted: 09/23/2008] [Indexed: 11/26/2022]
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27
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Liu XY, Ji YS, Zhang HX, Liu MC. Highly sensitive analysis of substituted aniline compounds in water samples by using oxidized multiwalled carbon nanotubes as an in-tube solid-phase microextraction medium. J Chromatogr A 2008; 1212:10-5. [DOI: 10.1016/j.chroma.2008.10.034] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2008] [Revised: 09/11/2008] [Accepted: 10/10/2008] [Indexed: 10/21/2022]
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Recent developments in solid-phase microextraction. Anal Bioanal Chem 2008; 393:781-95. [DOI: 10.1007/s00216-008-2375-3] [Citation(s) in RCA: 251] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2008] [Revised: 08/25/2008] [Accepted: 08/26/2008] [Indexed: 10/21/2022]
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Wang X, Zhao X, Liu X, Li Y, Fu L, Hu J, Huang C. Homogeneous liquid–liquid extraction combined with gas chromatography–electron capture detector for the determination of three pesticide residues in soils. Anal Chim Acta 2008; 620:162-9. [DOI: 10.1016/j.aca.2008.05.021] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2008] [Revised: 05/12/2008] [Accepted: 05/13/2008] [Indexed: 11/27/2022]
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30
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Coupled in-tube and on-fibre solid-phase microextractions for cleanup and preconcentration of organic micropollutants from aqueous samples and analysis by gas chromatography–mass spectrometry. Anal Chim Acta 2008; 618:61-9. [DOI: 10.1016/j.aca.2008.04.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2008] [Revised: 04/14/2008] [Accepted: 04/17/2008] [Indexed: 11/20/2022]
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31
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Prieto-Blanco M, Cháfer-Pericás C, López-Mahía P, Campíns-Falcó P. Automated on-line in-tube solid-phase microextraction-assisted derivatization coupled to liquid chromatography for quantifying residual dimethylamine in cationic polymers. J Chromatogr A 2008; 1188:118-23. [DOI: 10.1016/j.chroma.2008.02.056] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Revised: 02/11/2008] [Accepted: 02/18/2008] [Indexed: 11/30/2022]
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