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Choi MH, Chung BC. Bringing GC-MS profiling of steroids into clinical applications. MASS SPECTROMETRY REVIEWS 2015; 34:219-236. [PMID: 24965919 DOI: 10.1002/mas.21436] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2012] [Revised: 12/05/2013] [Accepted: 03/26/2014] [Indexed: 06/03/2023]
Abstract
Abnormalities of steroid biosynthesis and excretion are responsible for the development and prevention of endocrine disorders, such as metabolic syndromes, cancers, and neurodegenerative diseases. Due to their biochemical roles in endocrine system, qualitative and quantitative analysis of steroid hormones in various biological specimens is needed to elucidate their altered expression. Mass spectrometry (MS)-based steroid profiling can reveal the states of metabolites in biological systems and provide comprehensive insights by allowing comparisons between metabolites present in cells, tissues, or organisms. In addition, the activities of many enzymes related to steroid metabolism often lead to hormonal imbalances that have serious consequences, and which are responsible for the progress of hormone-dependent diseases. In contrast to immunoaffinity-based enzyme assays, MS-based methods are more reproducible in quantification. In particular, high-resolution gas chromatographic (GC) separation of steroids with similar chemical structures can be achieved to provide rapid and reproducible results with excellent purification. GC-MS profiling therefore has been widely used for steroid analysis, and offers the basis for techniques that can be applied to large-scale clinical studies. Recent advances in analytical technologies combined with inter-disciplinary strategies, such as physiology and bioinformatics, will help in understanding the biochemical roles of steroid hormones. Therefore, comprehensive analytical protocols in steroid analysis for different research purposes may contribute to the elucidation of complex metabolic processes relevant to steroid function in many endocrine disorders, and in the identification of diagnostic biomarkers.
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Affiliation(s)
- Man Ho Choi
- Future Convergence Research Division, Korea Institute of Science and Technology, Seoul, 136-791, Korea
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52
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Alothman ZA, Yilmaz E, Habila M, Soylak M. Solid phase extraction of metal ions in environmental samples on 1-(2-pyridylazo)-2-naphthol impregnated activated carbon cloth. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 112:74-79. [PMID: 25463856 DOI: 10.1016/j.ecoenv.2014.10.032] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Revised: 10/22/2014] [Accepted: 10/24/2014] [Indexed: 06/04/2023]
Abstract
1-(2-Pyridylazo)-2-naphthol impregnated activated carbon cloth (PAN-imp-ACC) was prepared as a solid phase sorbent and, for the first time, was used for the simultaneous separation and preconcentration of trace amounts of lead, cadmium and nickel in water, soil and sewage sludge samples prior to determination by flame atomic absorption spectrometry (FAAS). The parameters governing the efficiency of the method were optimized, including the pH, the eluent type and volume, the sample and eluent flow rates, diverse ions effects and the sample volume. A preconcentration factor of 100 was achieved for all the metal ions, with detection limits of 0.1-2.8 µg L(-1) and relative standard deviations below 6.3%. The adsorption capacity of the PAN-imp-ACC for Pb(II), Cd(II) and Ni(II) ions was found to be 45.0 mg g(-1), 45.0 mg g(-1) and 43.2 mg g(-1), respectively. The method was validated by the analysis of the certified reference materials TMDA-64.2 fortified Lake Ontario water and BCR-146R Sewage Sludge Amended Soil (Industrial Origin). The procedure was applied to determine the analytes content in real samples.
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Affiliation(s)
- Zeid A Alothman
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Kingdom of Saudi Arabia
| | - Erkan Yilmaz
- Erciyes University, Fen Fakultesi, Department of Chemistry, 38039 Kayseri, Turkey
| | - Mohamed Habila
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Kingdom of Saudi Arabia
| | - Mustafa Soylak
- Erciyes University, Fen Fakultesi, Department of Chemistry, 38039 Kayseri, Turkey.
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53
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Montesinos I, Sfakianaki A, Gallego M, Stalikas CD. Graphene-coated cotton fibers as a sorbent for the extraction of multiclass pesticide residues from water and their determination by gas chromatography with mass spectrometry. J Sep Sci 2015; 38:836-43. [DOI: 10.1002/jssc.201400957] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 11/21/2014] [Accepted: 12/09/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Isabel Montesinos
- Department of Analytical Chemistry; University of Cordoba; Cordoba Spain
| | | | - Mercedes Gallego
- Department of Analytical Chemistry; University of Cordoba; Cordoba Spain
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54
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Bielicka-Daszkiewicz K. Different methods to select the best extraction system for solid-phase extraction. J Sep Sci 2015; 38:439-44. [DOI: 10.1002/jssc.201401083] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 11/12/2014] [Accepted: 11/12/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Katarzyna Bielicka-Daszkiewicz
- Institute of Technology and Chemical Engineering; Poznań University of Technology ul. Berdychowo 4; 60-965 Poznań Poland
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55
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Seidi S, Yamini Y, Rezazadeh M. Electrochemically assisted solid based extraction techniques: A review. Talanta 2015; 132:339-53. [DOI: 10.1016/j.talanta.2014.08.059] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 08/20/2014] [Accepted: 08/21/2014] [Indexed: 11/25/2022]
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56
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Sarafraz-Yazdi A, Rokhian T, Amiri A, Ghaemi F. Carbon nanofibers decorated with magnetic nanoparticles as a new sorbent for the magnetic solid phase extraction of selected polycyclic aromatic hydrocarbons from water samples. NEW J CHEM 2015. [DOI: 10.1039/c5nj00859j] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The proposed method offers advantages such as wide linearity, satisfactory relative recovery, good sensitivity and precision and short analysis time.
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Affiliation(s)
- Ali Sarafraz-Yazdi
- Department of Chemistry
- Faculty of Sciences
- Ferdowsi University of Mashhad
- Iran
| | - Talat Rokhian
- Department of Chemistry
- Faculty of Sciences
- Ferdowsi University of Mashhad
- Iran
| | - Amirhassan Amiri
- Department of Chemistry
- Faculty of Sciences
- Hakim Sabzevari University
- Sabzevar
- Iran
| | - Ferial Ghaemi
- Institute of Advanced Technology (ITMA)
- Universiti Putra Malaysia
- Serdang
- Malaysia
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57
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Behbahani M, Aliakbari A, Amini MM, Behbahani AS, Omidi F. Synthesis and characterization of diphenylcarbazide-siliceous mesocellular foam and its application as a novel mesoporous sorbent for preconcentration and trace detection of copper and cadmium ions. RSC Adv 2015. [DOI: 10.1039/c5ra10240e] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We are introducing diphenylcarbazide functionalized siliceous mesocellular foam as a novel mesoporous solid-phase for the extraction of heavy metal ions including copper(ii) and cadmium(ii).
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Affiliation(s)
| | - Azam Aliakbari
- Department of Chemistry
- Shahid Beheshti University
- Tehran
- Iran
| | | | - Ahmad S. Behbahani
- Department of Chemistry
- Applied Chemistry
- Shahid Beheshti University
- Tehran
- Iran
| | - Fariborz Omidi
- Department of Occupational Health Engineering
- School of Public Health
- Shahroud University of Medical Sciences
- Shahroud
- Iran
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58
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Boyacı E, Rodríguez-Lafuente Á, Gorynski K, Mirnaghi F, Souza-Silva ÉA, Hein D, Pawliszyn J. Sample preparation with solid phase microextraction and exhaustive extraction approaches: Comparison for challenging cases. Anal Chim Acta 2014; 873:14-30. [PMID: 25911426 DOI: 10.1016/j.aca.2014.12.051] [Citation(s) in RCA: 131] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 12/22/2014] [Accepted: 12/27/2014] [Indexed: 10/24/2022]
Abstract
In chemical analysis, sample preparation is frequently considered the bottleneck of the entire analytical method. The success of the final method strongly depends on understanding the entire process of analysis of a particular type of analyte in a sample, namely: the physicochemical properties of the analytes (solubility, volatility, polarity etc.), the environmental conditions, and the matrix components of the sample. Various sample preparation strategies have been developed based on exhaustive or non-exhaustive extraction of analytes from matrices. Undoubtedly, amongst all sample preparation approaches, liquid extraction, including liquid-liquid (LLE) and solid phase extraction (SPE), are the most well-known, widely used, and commonly accepted methods by many international organizations and accredited laboratories. Both methods are well documented and there are many well defined procedures, which make them, at first sight, the methods of choice. However, many challenging tasks, such as complex matrix applications, on-site and in vivo applications, and determination of matrix-bound and free concentrations of analytes, are not easily attainable with these classical approaches for sample preparation. In the last two decades, the introduction of solid phase microextraction (SPME) has brought significant progress in the sample preparation area by facilitating on-site and in vivo applications, time weighted average (TWA) and instantaneous concentration determinations. Recently introduced matrix compatible coatings for SPME facilitate direct extraction from complex matrices and fill the gap in direct sampling from challenging matrices. Following introduction of SPME, numerous other microextraction approaches evolved to address limitations of the above mentioned techniques. There is not a single method that can be considered as a universal solution for sample preparation. This review aims to show the main advantages and limitations of the above mentioned sample preparation approaches and the applicability and capability of each technique for challenging cases such as complex matrices, on-site applications and automation.
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Affiliation(s)
- Ezel Boyacı
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Ángel Rodríguez-Lafuente
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Krzysztof Gorynski
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada; Department of Pharmacodynamics and Molecular Pharmacology, Collegium Medicum in Bydgoszcz Nicolaus Copernicus University in Torun, Jurasza 2, 85-089 Bydgoszcz, Poland
| | - Fatemeh Mirnaghi
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada; Emergency Science and Technology Section, Environment Canada, 335 River Road, Ottawa, Ontario K1A 0H3, Canada
| | - Érica A Souza-Silva
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Dietmar Hein
- Professional Analytical System (PAS) Technology, Magdala, Germany
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada.
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Birjandi AP, Mirnaghi FS, Bojko B, Wąsowicz M, Pawliszyn J. Application of Solid Phase Microextraction for Quantitation of Polyunsaturated Fatty Acids in Biological Fluids. Anal Chem 2014; 86:12022-9. [PMID: 25403310 DOI: 10.1021/ac502627w] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Afsoon Pajand Birjandi
- Department
of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L3G1, Canada
| | - Fatemeh Sadat Mirnaghi
- Department
of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L3G1, Canada
| | - Barbara Bojko
- Department
of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L3G1, Canada
| | - Marcin Wąsowicz
- Department
of Anesthesia and Pain Management, Toronto General Hospital, Toronto, Ontario M5G 2C4, Canada
| | - Janusz Pawliszyn
- Department
of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L3G1, Canada
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60
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Raoov M, Mohamad S, bin Abas MR, Surikumaran H. New macroporous β-cyclodextrin functionalized ionic liquid polymer as an adsorbent for solid phase extraction with phenols. Talanta 2014; 130:155-63. [DOI: 10.1016/j.talanta.2014.06.067] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 06/26/2014] [Accepted: 06/28/2014] [Indexed: 10/25/2022]
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61
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Luo H, Liu H, Cao Y, Xu D, Mao Z, Mou Y, Meng J, Lai D, Liu Y, Zhou L. Enhanced production of botrallin and TMC-264 with in situ macroporous resin adsorption in mycelial liquid culture of the endophytic fungus Hyalodendriella sp. Ponipodef12. Molecules 2014; 19:14221-34. [PMID: 25211003 PMCID: PMC6271592 DOI: 10.3390/molecules190914221] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 09/01/2014] [Accepted: 09/03/2014] [Indexed: 01/16/2023] Open
Abstract
Hyalodendriella sp. Ponipodef12, an endophytic fungus from the hybrid "Neva" of Populus deltoides × P. nigra, is a high producer of the bioactive dibenzo-α-pyrones botrallin and TMC-264. However, both the botrallin and TMC-264 produced by Hyalodendriella sp. Ponipodef12 were retained as both intracellular and extracellular products. The aim of this study was to evaluate an in situ macroporous resin adsorption for enhancement of botrallin and TMC-264 production in mycelial liquid culture of Hyalodendriella sp. Ponipodef12. Production of botrallin and TMC-264 was most effectively enhanced by macroporous resin DM-301 among the thirteen nonionic macroporous resins tested. The highest botrallin yield (51.47 mg/L, which was 2.29-fold higher than the control at 22.49 mg/L) was obtained by adding resin DM-301 at 4.38% (g/mL) to the culture broth on day 24 and allowing a period of 4 days for adsorption. The highest TMC-264 yield reached 47.74 mg/L, which was 11.76-fold higher than that of the control (4.06 mg/L), and was achieved by adding DM-301 resin at 4.38% (w/v) in the culture broth on day 24 and allowing a period of 6 days for adsorption. The results show that in situ resin adsorption is an effective strategy for enhancing production of botrallin and TMC-264, and also for facilitating their recovery from mycelial liquid culture of Hyalodendriella sp. Ponipodef12.
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Affiliation(s)
- Haiyu Luo
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Hongwei Liu
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Yuheng Cao
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Dan Xu
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Ziling Mao
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Yan Mou
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Jiajia Meng
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Daowan Lai
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Yang Liu
- Institute of Agro-products Processing Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Ligang Zhou
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
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62
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Miskam M, Abu Bakar NK, Mohamad S. Determination of polar aromatic amines using newly synthesized sol-gel titanium (IV) butoxide cyanopropyltriethoxysilane as solid phase extraction sorbent. Talanta 2013; 120:450-5. [PMID: 24468395 DOI: 10.1016/j.talanta.2013.12.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 12/13/2013] [Accepted: 12/16/2013] [Indexed: 10/25/2022]
Abstract
A solid phase extraction (SPE) method has been developed using a newly synthesized titanium (IV) butoxide-cyanopropyltriethoxysilane (Ti-CNPrTEOS) sorbent for polar selective extraction of aromatic amines in river water sample. The effect of different parameters on the extraction recovery was studied using the SPE method. The applicability of the sorbents for the extraction of polar aromatic amines by the SPE was extensively studied and evaluated as a function of pH, conditioning solvent, sample loading volume, elution solvent and elution solvent volume. The optimum experimental conditions were sample at pH 7, dichloromethane as conditioning solvent, 10 mL sample loading volume and 5 mL of acetonitrile as the eluting solvent. Under the optimum conditions, the limit of detection (LOD) and limit of quantification (LOQ) for solid phase extraction using Ti-CNPrTEOS SPE sorbent (0.01-0.2; 0.03-0.61 µg L(-1)) were lower compared with those achieved using Si-CN SPE sorbent (0.25-1.50; 1.96-3.59 µg L(-1)) and C18 SPE sorbent (0.37-0.98; 1.87-2.87 µg L(-1)) with higher selectivity towards the extraction of polar aromatic amines. The optimized procedure was successfully applied for the solid phase extraction method of selected aromatic amines in river water, waste water and tap water samples prior to the gas chromatography-flame ionization detector separation.
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Affiliation(s)
- Mazidatulakmam Miskam
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia; Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia, Bandar Indera Mahkota, 25200 Kuantan, Pahang, Malaysia.
| | - Nor Kartini Abu Bakar
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Sharifah Mohamad
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
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63
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Mirnaghi FS, Goryński K, Rodriguez-Lafuente A, Boyacı E, Bojko B, Pawliszyn J. Microextraction versus exhaustive extraction approaches for simultaneous analysis of compounds in wide range of polarity. J Chromatogr A 2013; 1316:37-43. [DOI: 10.1016/j.chroma.2013.09.084] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 09/25/2013] [Accepted: 09/27/2013] [Indexed: 11/24/2022]
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64
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Fayad PB, Prévost M, Sauvé S. On-line solid-phase extraction coupled to liquid chromatography tandem mass spectrometry optimized for the analysis of steroid hormones in urban wastewaters. Talanta 2013; 115:349-60. [DOI: 10.1016/j.talanta.2013.05.038] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 05/13/2013] [Accepted: 05/14/2013] [Indexed: 11/17/2022]
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65
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Purification of ustiloxins A and B from rice false smut balls by macroporous resins. Molecules 2013; 18:8181-99. [PMID: 23852165 PMCID: PMC6269941 DOI: 10.3390/molecules18078181] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 06/26/2013] [Accepted: 07/08/2013] [Indexed: 11/17/2022] Open
Abstract
Ustiloxins are cyclopeptide mycotoxins produced by Villosiclava virens, the pathogenic fungus of rice false smut disease. Both resins SP207 and SP700 were screened to show the best adsorption and desorption properties for ustiloxins A and B among 20 commercial macroporous resins. Dynamic adsorption and desorption tests were carried out to optimize the process parameters. The optimal conditions for adsorption of resin SP207 were a processing volume as 32 bed volumes (BV), pH value of 4, and flow rate of 2 BV/h; and those for desorption of resin SP207 were a 40:60 (v/v) ratio of ethanol to water, an eluent volume of 4 BV, pH value of 4 and a flow rate of 3 BV/h. The optimal conditions for adsorption of resin SP700 were a processing volume of 26 BV, pH value as 4, flow rate of 2 BV/h; and those for desorption of resin SP700 were a 30:70 (v/v) ratio of ethanol to water solution as eluent, volume of 4 BV, pH value as 4 and flow rate of 2 BV/h. Under the optimal conditions; the purities of ustiloxins A and B obtained with resin SP207 increased 23.06-fold and 19.78-fold, respectively; and their recoveries were 96.67% and 81.25%; respectively. Similarly; the purities of ustiloxins A and B obtained with resin SP700 increased 14.75-fold and 15.33-fold and their recoveries were 93.65% and 88.64%; respectively. The results show that adsorption and desorption on SP207 and SP700 resins are effective strategies for purifying ustiloxins A and B. The developed methods are beneficial for large-scale preparation and purification of ustiloxins A and B from rice false smut balls.
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66
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Backe WJ, Day TC, Field JA. Zwitterionic, cationic, and anionic fluorinated chemicals in aqueous film forming foam formulations and groundwater from U.S. military bases by nonaqueous large-volume injection HPLC-MS/MS. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:5226-34. [PMID: 23590254 DOI: 10.1021/es3034999] [Citation(s) in RCA: 334] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
A new analytical method was developed to quantify 26 newly-identified and 21 legacy (e.g. perfluoroalkyl carboxylates, perfluoroalkyl sulfonates, and fluorotelomer sulfonates) per and polyfluorinated alkyl substances (PFAS) in groundwater and aqueous film forming foam (AFFF) formulations. Prior to analysis, AFFF formulations were diluted into methanol and PFAS in groundwater were micro liquid-liquid extracted. Methanolic dilutions of AFFF formulations and groundwater extracts were analyzed by large-volume injection (900 μL) high-performance liquid chromatography tandem mass spectrometry. Orthogonal chromatography was performed using cation exchange (silica) and anion exchange (propylamine) guard columns connected in series to a reverse-phase (C18) analytical column. Method detection limits for PFAS in groundwater ranged from 0.71 ng/L to 67 ng/L, and whole-method accuracy ranged from 96% to 106% for analytes for which matched authentic analytical standards were available. For analytes without authentic analytical standards, whole-method accuracy ranged from 78 % to 144 %, and whole-method precision was less than 15 % relative standard deviation for all analytes. A demonstration of the method on groundwater samples from five military bases revealed eight of the 26 newly-identified PFAS present at concentrations up to 6900 ng/L. The newly-identified PFAS represent a minor fraction of the fluorinated chemicals in groundwater relative to legacy PFAS. The profiles of PFAS in groundwater differ from those found in fluorotelomer- and electrofluorination-based AFFF formulations, which potentially indicates environmental transformation of PFAS.
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Affiliation(s)
- Will J Backe
- 153 Gilbert Hall, Department of Chemistry, Oregon State University, Corvallis, Oregon 97331-4003, United States
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67
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Determination of Triazoles in Tea Samples Using Dispersive Solid Phase Extraction Combined with Dispersive Liquid–Liquid Microextraction Followed by Liquid Chromatography–Tandem Mass Spectrometry. FOOD ANAL METHOD 2013. [DOI: 10.1007/s12161-013-9617-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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68
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Copaciu F, Coman V, Simedru D, Beldean-Galea S, Opriş O, Ristoiu D. DETERMINATION OF TWO TEXTILE DYES IN WASTEWATER BY SOLID PHASE EXTRACTION AND LIQUID CHROMATOGRAPHY/ELECTROSPRAY IONIZATION TANDEM MASS SPECTROMETRY ANALYSIS. J LIQ CHROMATOGR R T 2013. [DOI: 10.1080/10826076.2012.695312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Florina Copaciu
- a Faculty of Environmental Science and Engineering , Babeş-Bolyai University , Cluj-Napoca , Romania
| | - Virginia Coman
- b “Raluca Ripan” Institute for Research in Chemistry , Babeş-Bolyai University , Cluj-Napoca , Romania
| | - Dorina Simedru
- c INCDO-INOE 2000, Research Institute for Analytical Instrumentation ICIA , Cluj-Napoca , Romania
| | - Simion Beldean-Galea
- a Faculty of Environmental Science and Engineering , Babeş-Bolyai University , Cluj-Napoca , Romania
| | - Ocsana Opriş
- a Faculty of Environmental Science and Engineering , Babeş-Bolyai University , Cluj-Napoca , Romania
| | - Dumitru Ristoiu
- a Faculty of Environmental Science and Engineering , Babeş-Bolyai University , Cluj-Napoca , Romania
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69
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Bielicka-Daszkiewicz K, Voelkel A, Rusińska-Roszak D, Zarzycki PK. Estimation of the breakthrough volume of selected steroids for C-18 solid-phase extraction sorbent using retention data from micro-thin layer chromatography. J Sep Sci 2013; 36:1104-11. [DOI: 10.1002/jssc.201200917] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 12/18/2012] [Accepted: 12/19/2012] [Indexed: 11/06/2022]
Affiliation(s)
| | - Adam Voelkel
- Institute of Technology and Chemical Engineering; Poznań University of Technology; Poznań Poland
| | - Danuta Rusińska-Roszak
- Institute of Technology and Chemical Engineering; Poznań University of Technology; Poznań Poland
| | - Paweł K. Zarzycki
- Section of Toxicology and Bioanalysis; Koszalin University of Technology; Koszalin Poland
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70
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Karunasekara T, Poole CF. Compounds for expanding the descriptor space for characterizing separation systems. J Chromatogr A 2012; 1266:124-30. [DOI: 10.1016/j.chroma.2012.09.104] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Revised: 09/25/2012] [Accepted: 09/28/2012] [Indexed: 10/27/2022]
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71
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A magnetic copper(II)-imprinted polymer for the selective enrichment of trace copper(II) ions in environmental water. Mikrochim Acta 2012. [DOI: 10.1007/s00604-012-0890-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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72
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73
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Yang R, Meng D, Song Y, Li J, Zhang Y, Hu X, Ni Y, Li Q. Simultaneous decoloration and deproteinization of crude polysaccharide from pumpkin residues by cross-linked polystyrene macroporous resin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:8450-8456. [PMID: 22860708 DOI: 10.1021/jf3031315] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A novel method for the purification of crude polysaccharide from fermentation broth of pumpkin residues by macroporous resins was developed. Through static adsorption and desorption and adsorption kinetic tests, six resins (AB-8, S-8, HPH480, HPD100, X-5, and D101) with different polarity, diameter, and surface area were studied for simultaneous decoloration and deproteinization of crude polysaccharide, and S-8 was chosen as the best one. Dynamic breakthrough and desorption tests were performed in a glass column packed with S-8 resin, and the resulting adsorption ratios of pigment and protein were 84.3% and 75.9% (w/w), respectively, with a recovery ratio of polysaccharide 84.7% (w/w). S-8 resin also exhibited higher purification efficiency than the other tested traditional methods. Moreover, UV/vis spectroscopy (200-900 nm) analysis revealed most of the pigment and protein were absorbed by S-8 resin, and HPLC (containing a refractive index detector and a HPSEC column) results indicated that there was no degradation of the polysaccharide. This automated and efficient method via adsorption-desorption strategy could have potential in scale-up purification and preparation of polysaccharide in the future.
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Affiliation(s)
- Rui Yang
- College of Food Science and Nutritional Engineering, China Agricultural University , National Engineering Research Center for Fruits and Vegetables Processing, Key Laboratory of Fruits and Vegetables Processing, Ministry of Agriculture, Beijing 100083, China
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74
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75
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Backe WJ, Field JA. Is SPE necessary for environmental analysis? A quantitative comparison of matrix effects from large-volume injection and solid-phase extraction based methods. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2012; 46:6750-6758. [PMID: 22626028 DOI: 10.1021/es300235z] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Environmental analysis by large-volume injection (LVI) was compared to solid-phase extraction (SPE) based methods using matrix effects as a quantitative indicator of analytical signal quality. LVI was performed by the direct injection of 900 μL of wastewater onto a high-performance liquid chromatography (HPLC) column while SPE-based methods utilized octadecyl silane (C18) and hydrophobic-lypophilic balance (HLB) solid phases to preconcentrate wastewater prior to analysis. Model analytes from three classes of environmental contaminants were selected for study including four estrogens (estrone, estradiol, estriol, and ethinylestradiol), eight perfluoroalkyl carboxylates (C4-C11), and five perfluoroalkyl sulfonates (C4, C6-C8, and C10). The matrix effects on analytes were assessed by two approaches (quantitatively by calculating percent matrix effects and qualitatively with postcolumn infusions) and compared across LVI- and SPE-based methods at constant (high and low) analyte-to-matrix mass ratios. The results from this study demonstrated that the LVI-based method produced analytical signals of quality similar to the two SPE-based methods. Furthermore, LVI presented a clear advantage over SPE because it was performed at lower cost, required fewer materials, involved less labor and eliminated the analyte loss associated with SPE.
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Affiliation(s)
- Will J Backe
- Chemistry Department, 153 Gilbert Hall, Oregon State University, Corvallis, Oregon 97331-4003, United States
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76
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77
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Automated determination of total captopril in urine by liquid chromatography with post-column derivatization coupled to on-line solid phase extraction in a sequential injection manifold. Talanta 2011; 88:561-6. [PMID: 22265541 DOI: 10.1016/j.talanta.2011.11.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Revised: 11/04/2011] [Accepted: 11/13/2011] [Indexed: 11/22/2022]
Abstract
The present study reports a new liquid chromatographic (HPLC) method for the determination of the anti-hypertension drug captopril (CAP) in human urine. After its separation from the sample matrix in a reversed phase HPLC column, CAP reacts with the thiol-selective reagent ethyl-propiolate (EP) in a post-column configuration and the formed thioacrylate derivative is detected at 285 nm. Automated 4-fold preconcentration of the analyte prior to analysis was achieved by an on-line solid phase extraction (SPE) step using a sequential injection (SI) manifold. The Oasis HLB SPE cartridges offered quantitative recoveries and effective sample cleaning by applying a simple SPE protocol. The limits of detection and quantitation were 10 μg L(-1) and 35 μg L(-1) respectively. The percent recoveries for the analysis of human urine samples ranged between 90 and 96% and 95 and 104% using aqueous and matrix matched calibration curves respectively.
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78
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Carver SM, Münster U, Tuovinen OH. A SOLID PHASE EXTRACTION TECHNIQUE FOR HPLC ANALYSIS OF SHORT CHAIN FATTY ACID FLUXES DURING MICROBIAL DEGRADATION OF PLANT POLYMERS. J LIQ CHROMATOGR R T 2011. [DOI: 10.1080/10826076.2011.575978] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Sarah M. Carver
- a Department of Microbiology , Ohio State University , Columbus, Ohio, USA
- b Department of Chemistry and Bioengineering , Tampere University of Technology , Tampere, Finland
| | - Uwe Münster
- b Department of Chemistry and Bioengineering , Tampere University of Technology , Tampere, Finland
| | - Olli H. Tuovinen
- a Department of Microbiology , Ohio State University , Columbus, Ohio, USA
- b Department of Chemistry and Bioengineering , Tampere University of Technology , Tampere, Finland
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79
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Trace analysis of environmental matrices by large-volume injection and liquid chromatography–mass spectrometry. Anal Bioanal Chem 2011; 402:175-86. [DOI: 10.1007/s00216-011-5290-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2011] [Revised: 07/23/2011] [Accepted: 07/26/2011] [Indexed: 10/17/2022]
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80
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Murillo-Tovar MA, Amador-Muñoz O, Villalobos-Pietrini R, Marriott PJ. Selective Separation of Oxy-PAH from n-Alkanes and PAH in Complex Organic Mixtures Extracted from Airborne PM2.5. Chromatographia 2010. [DOI: 10.1365/s10337-010-1738-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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81
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Nema T, Chan E, Ho P. Application of silica-based monolith as solid phase extraction cartridge for extracting polar compounds from urine. Talanta 2010; 82:488-94. [DOI: 10.1016/j.talanta.2010.04.063] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2010] [Revised: 04/28/2010] [Accepted: 04/30/2010] [Indexed: 11/25/2022]
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82
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Culleré L, Bueno M, Cacho J, Ferreira V. Selectivity and efficiency of different reversed-phase and mixed-mode sorbents to preconcentrate and isolate aroma molecules. J Chromatogr A 2010; 1217:1557-66. [DOI: 10.1016/j.chroma.2010.01.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2009] [Revised: 12/21/2009] [Accepted: 01/04/2010] [Indexed: 10/20/2022]
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83
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Statkus MA, Kadomtseva EN, Tsizin GI. On-line adsorption—liquid-chromatographic determination of polycyclic aromatic hydrocarbons in aqueous solutions: Selection of preconcentration conditions. JOURNAL OF ANALYTICAL CHEMISTRY 2010. [DOI: 10.1134/s1061934810020048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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84
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ASAI S, MIYOSHI K, SAITO K. Modification of a Porous Sheet (MAPS) for the High-Performance Solid-Phase Extraction of Trace and Ultratrace Elements by Radiation-Induced Graft Polymerization. ANAL SCI 2010; 26:649-58. [DOI: 10.2116/analsci.26.649] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Shiho ASAI
- Division of Environment and Radiation Sciences, Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency
| | | | - Kyoichi SAITO
- Department of Applied Chemistry and Biotechnology, Chiba University
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85
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Mutavdžić Pavlović D, Babić S, Dolar D, Ašperger D, Košutić K, Horvat AJM, Kaštelan-Macan M. Development and optimization of the SPE procedure for determination of pharmaceuticals in water samples by HPLC-diode array detection. J Sep Sci 2009; 33:258-67. [DOI: 10.1002/jssc.200900571] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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86
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Post-derivatization procedure for determination of hippuric acid after extraction by an automated micro solid phase extraction system and monitoring by gas chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:2945-51. [DOI: 10.1016/j.jchromb.2009.06.036] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2009] [Revised: 06/24/2009] [Accepted: 06/24/2009] [Indexed: 11/20/2022]
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87
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Rofouei MK, Payehghadr M, Shamsipur M, Ahmadalinezhad A. Solid phase extraction of ultra traces silver(I) using octadecyl silica membrane disks modified by 1,3-bis(2-cyanobenzene) triazene (CBT) ligand prior to determination by flame atomic absorption. JOURNAL OF HAZARDOUS MATERIALS 2009; 168:1184-1187. [PMID: 19345015 DOI: 10.1016/j.jhazmat.2009.02.165] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2008] [Revised: 01/25/2009] [Accepted: 02/14/2009] [Indexed: 05/27/2023]
Abstract
A simple, reliable and rapid method for preconcentration and determination of the ultra trace amount of silver using octadecyl silica membrane disk modified by a recently synthesized triazene ligand, 1,3-bis(2-cyanobenzene)triazene (CBT), and flame atomic absorption spectrometry is presented. Various parameters including pH of aqueous solution, flow rates, the amount of ligand and the type of stripping solvents were optimized. The breakthrough volume was greater than 1800 ml with an enrichment factor of more than 360 and 6.0 ng l(-1) detection limit. The capacity of the membrane disks modified by 5mg of the ligand was found to be 1070 microg of silver. The effects of various cationic interferences on the percent recovery of silver ion were studied. The method was successfully applied to the determination of silver ion in different samples, especially determination of ultra trace amount of silver in the presence of large amount of lead.
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88
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Shen Y, Hu Y, Huang K, Yin S, Chen B, Yao S. Solid-phase extraction of carotenoids. J Chromatogr A 2009; 1216:5763-8. [DOI: 10.1016/j.chroma.2009.06.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Revised: 05/31/2009] [Accepted: 06/03/2009] [Indexed: 11/28/2022]
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89
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Pavli V, Kmetec V, Vehovec T. Isolation of Peptide Components of Bacitracin by Preparative HPLC and Solid Phase Extraction (SPE). J LIQ CHROMATOGR R T 2009. [DOI: 10.1081/jlc-200028153] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Viljem Pavli
- a Stability Testing Department , KRKA d.d. , 8000 , Novo mesto , Slovenia
| | - Vojko Kmetec
- b Faculty of Pharmacy , University of Ljubljana , Ljubljana , Slovenia
| | - Tanja Vehovec
- a Stability Testing Department , KRKA d.d. , 8000 , Novo mesto , Slovenia
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90
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Schneider M, Goss KU. Systematic Investigation of the Sorption Properties of Tenax TA, Chromosorb 106, Porapak N, and Carbopak F. Anal Chem 2009; 81:3017-21. [DOI: 10.1021/ac802686p] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Martina Schneider
- UFZ Helmholtz Centre for Environmental Research-UFZ, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Kai-Uwe Goss
- UFZ Helmholtz Centre for Environmental Research-UFZ, Permoserstrasse 15, 04318 Leipzig, Germany
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91
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Poli D, Caglieri A, Goldoni M, Castoldi AF, Coccini T, Roda E, Vitalone A, Ceccatelli S, Mutti A. Single step determination of PCB 126 and 153 in rat tissues by using solid phase microextraction/gas chromatography–mass spectrometry: Comparison with solid phase extraction and liquid/liquid extraction. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:773-83. [DOI: 10.1016/j.jchromb.2009.02.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2008] [Revised: 12/16/2008] [Accepted: 02/03/2009] [Indexed: 11/30/2022]
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92
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Hendriks G. Theoretical models in LC based bioanalytical method development. J Pharm Biomed Anal 2009; 49:1-10. [DOI: 10.1016/j.jpba.2008.09.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2008] [Accepted: 09/19/2008] [Indexed: 10/21/2022]
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93
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Determination of higher carboxylic acids in snow samples using solid-phase extraction and LC/MS-TOF. Anal Bioanal Chem 2008; 392:1459-70. [DOI: 10.1007/s00216-008-2440-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2008] [Revised: 09/18/2008] [Accepted: 09/25/2008] [Indexed: 10/21/2022]
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94
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Moon JY, Jung HJ, Moon MH, Chung BC, Choi MH. Inclusion complex-based solid-phase extraction of steroidal compounds with entrapped beta-cyclodextrin polymer. Steroids 2008; 73:1090-7. [PMID: 18547597 DOI: 10.1016/j.steroids.2008.04.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2007] [Revised: 04/14/2008] [Accepted: 04/15/2008] [Indexed: 11/19/2022]
Abstract
Although the hydrophobic interaction-based solid-phase extraction (SPE) has been widely used, the extraction yields of steroids including androgens, estrogens, and corticoids were slightly different along with the physical and chemical properties of each molecule. A new SPE technique based on the formation of an inclusion complex with beta-cyclodextrin (betaCD) has been achieved for comprehensive sample purification in mass spectrometric analysis of 45 endogenous or synthetic androgens, 11 endogenous estrogens, and 21 corticoids. A copolymer of betaCD with epichlorohydrin was prepared by a cross-linking reaction followed by entrapment with 0.3M CaCl(2) to yield an improved SPE sorbent and the hydrolyzed urine samples were applied for purification. Steroidal compounds tested on the entrapped betaCD polymer were extracted with tetrahydrofuran and the overall recoveries ranged from 82% to 112% for 77 steroids in urine. Especially, the hydroxylated estrogens showed an excellent binding capacity (96-116% recovery) to betaCD through hydrogen bonding between their phenolic hydroxyl and exterior hydroxyl groups. A comparison between SPE methods with betaCD and Oasis HLB as a conventional cartridge showed that the extraction efficiency of polar steroids was significantly increased in the betaCD experiment, which has no connection with different polarity of steroid molecules. Due to its multi-functional mechanism derived from molecular inclusion and chemical interactions, this new SPE sorbent resulted in better selectivity and extraction efficiency than that obtained using the conventionally used hydrophobicity-based SPE method.
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Affiliation(s)
- Ju-Yeon Moon
- Life Sciences Division, Korea Institute of Science and Technology, 39-1 Hawolkok-dong, Seoul 136-791, Korea; Deparment of Chemistry, Yonsei University, 134 Sinchon-dong, Seoul 120-749, Korea
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95
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New practical algorithm for modelling analyte recovery in bioanalytical reversed phase and mixed-mode solid phase extraction. J Pharm Biomed Anal 2008; 48:158-70. [DOI: 10.1016/j.jpba.2008.05.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2008] [Revised: 05/03/2008] [Accepted: 05/07/2008] [Indexed: 11/18/2022]
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96
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Kiridena W, Atapattu SN, Poole CF, Koziol WW. Comparison of the Separation Characteristics of the Organic–Inorganic Hybrid Stationary Phases XBridge C8 and Phenyl and XTerra Phenyl in RP-LC. Chromatographia 2008. [DOI: 10.1365/s10337-008-0778-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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97
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Marchiarullo DJ, Lim JY, Vaksman Z, Ferrance JP, Putcha L, Landers JP. Towards an integrated microfluidic device for spaceflight clinical diagnostics Microchip-based solid-phase extraction of hydroxyl radical markers. J Chromatogr A 2008; 1200:198-203. [PMID: 18555260 DOI: 10.1016/j.chroma.2008.05.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2008] [Revised: 05/14/2008] [Accepted: 05/19/2008] [Indexed: 11/26/2022]
Abstract
A microchip-based solid-phase extraction method for biological fluid small molecule analysis has been developed. Using a commercially available copolymer packed into a microchip channel, extraction and preconcentration of 2,3-dihydroxybenzoic acid (DHBA) and 2,5-DHBA from saliva was achieved. The metabolites, formed from salicylic acid by reactive oxygen species, can be used as markers of oxidative stress. The results show high recovery of both metabolites (>90+/-15% for spiked saliva) with an 80-fold concentration enhancement possible. The eluent is directly analyzed using capillary electrophoresis, with good resolution for the two metabolites. This study demonstrates the feasibility of future integrated microdevices for spaceflight small molecule biomarker analysis.
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98
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Jin Y, Xue XY, Zhang FF, Zhang J, Shi H, Xiao YS, Ke YX, Liang XM. Rapid prediction and optimization of concentration conditions for preparative fractions by solid-phase extraction. J Sep Sci 2008; 31:615-21. [DOI: 10.1002/jssc.200700477] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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99
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Analysis of nitrophenols in cloud water with a miniaturized light-phase rotary perforator and HPLC-MS. Anal Bioanal Chem 2008; 391:161-9. [DOI: 10.1007/s00216-008-1939-6] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2007] [Revised: 01/29/2008] [Accepted: 02/05/2008] [Indexed: 10/22/2022]
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100
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Tempels FWA, Underberg WJM, Somsen GW, de Jong GJ. Design and applications of coupled SPE-CE. Electrophoresis 2008; 29:108-28. [DOI: 10.1002/elps.200700149] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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