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Istenič S, Cvetko E, Zabret J, Stopar Pintarič T, Umek N. Determination of bupivacaine tissue concentration in human biopsy samples using high-performance liquid chromatography with mass spectrometry. Biomed Chromatogr 2021; 35:e5198. [PMID: 34121212 DOI: 10.1002/bmc.5198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 05/13/2021] [Accepted: 06/09/2021] [Indexed: 11/05/2022]
Abstract
In the present study, we developed a simple and rapid analytical method for the quantification of bupivacaine hydrochloride in human biopsy samples of adipose, muscle, neural, connective and cartilage tissue using liquid chromatography-mass spectrometry. Anesthetics were extracted from the tissue samples using 0.1% formic acid in acetonitrile for protein denaturation and hexane for removal of lipophilic impurities. Analytes were separated adequately on Phenomenex Luna Omega polar C18 column using a gradient mobile phase 0.1% formic acid in water and 0.1% formic acid in acetonitrile. The lower limits of quantification were ≤ 97 ng g-1 tissue for all studied tissues. Intra-day recoveries were between 48.2% and 82.1% with relative standard deviations (RSDs) between 1.47% and 14.28%, whereas inter-day recoveries were between 52.2% and 77.6% with RSDs between 2.98% and 14.79%. The calibration curve showed a linear fit with R2 higher than 0.99 in the concentration range from 0.16 to 100 μg g-1 . Lidocaine hydrochloride was tested as internal standard because its recoveries and matrix effects were comparable to bupivacaine hydrochloride. Post-analytical corrections of measured bupivacaine tissue concentrations can accordingly be made based on recovery of lidocaine as internal standard, with recoveries between 51.2% and 86.9% and RSDs between 1.99% and 16.88%. The developed method could be used to study time-dependent spread of bupivacaine locally or to more distant locations across tissue barriers.
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Affiliation(s)
- Simon Istenič
- Core Facility, Helios TBLUS, Domžale, Slovenia.,Institute of Anatomy, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Erika Cvetko
- Institute of Anatomy, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Joži Zabret
- Core Facility, Helios TBLUS, Domžale, Slovenia
| | - Tatjana Stopar Pintarič
- Institute of Anatomy, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.,Department of Anaesthesiology and Intensive Therapy, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Nejc Umek
- Institute of Anatomy, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
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DEMIR E, INAM O, INAM R. Determination of Ophthalmic Drug Proparacaine Using Multi-walled Carbon Nanotube Paste Electrode by Square Wave Stripping Voltammetry. ANAL SCI 2018; 34:771-776. [DOI: 10.2116/analsci.17p589] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Ersin DEMIR
- Department of Food Engineering, Faculty of Engineering, Okan University
| | - Onur INAM
- Department of Ophthalmology, Faculty of Medicine, Hacettepe University
| | - Recai INAM
- Department of Chemistry, Faculty of Science, Gazi University
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Quantification of bupivacaine hydrochloride and isoflupredone acetate residues in porcine muscle, beef, milk, egg, shrimp, flatfish, and eel using a simplified extraction method coupled with liquid chromatography-triple quadrupole tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1065-1066:29-34. [PMID: 28946122 DOI: 10.1016/j.jchromb.2017.09.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 09/11/2017] [Accepted: 09/17/2017] [Indexed: 11/22/2022]
Abstract
In this study, a simple analytical approach has been developed and validated for the determination of bupivacaine hydrochloride and isoflupredone acetate residues in porcine muscle, beef, milk, egg, shrimp, flatfish, and eel using liquid chromatography-tandem mass spectrometry (LC-MS/MS). A 0.1% solution of acetic acid in acetonitrile combined with n-hexane was used for deproteinization and defatting of all tested matrices and the target drugs were well separated on a Waters Xbridge™ C18 analytical column using a mobile phase consisting of 0.1% acetic acid (A) and 0.1% solution of acetic acid in methanol (B). The linearity estimated from six-point matrix-matched calibrations was good, with coefficients of determination ≥0.9873. The limits of quantification (LOQs) for bupivacaine hydrochloride and isoflupredone acetate were 1 and 2ngg-1, respectively. Recovery percentages in the ranges of 72.51-112.39% (bupivacaine hydrochloride) and 72.58-114.56% (isoflupredone acetate) were obtained from three different fortification concentrations with relative standard deviations (RSDs) of <15.14%. All samples for the experimental work and method application were collected from the local markets in Seoul, Republic of Korea, and none of them tested positive for the target drugs. In conclusion, a simple method using a 0.1% solution of acetic acid in acetonitrile and n-hexane followed by LC-MS/MS could effectively extract bupivacaine hydrochloride and isoflupredone acetate from porcine muscle, beef, milk, egg, shrimp, flatfish, and eel samples.
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Hassan AK, Ameen ST, Saad B. Tetracaine – selective electrodes with polymer membranes and their application in pharmaceutical formulation control. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2013.04.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Liu D, Peng J, Liu S, Zhou M, Zhang J, Li A. Resonance Rayleigh scattering technique as a detection method for the RP-HPLC determination of local anaesthetics in human urine. LUMINESCENCE 2017; 32:4-10. [PMID: 27145989 DOI: 10.1002/bio.3140] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 03/08/2016] [Accepted: 03/11/2016] [Indexed: 11/08/2022]
Abstract
A highly selective and sensitive method of reversed phase high-performance liquid chromatography (RP-HPLC) coupled with resonance Rayleigh scattering (RRS) was developed for the determination of procaine, bupivacaine and tetracaine. Separation of three local anaesthetics was achieved at 35 °C on a C18 column. The mobile phase was 30: 70 (v/v) acetonitrile/triethylamine-phosphoric acid buffer (pH 2.9) at flow rate of 0.3 mL/min. The RRS detection was conducted by taking advantage of the strong RRS enhancement of the local anaesthetics with erythrosine reaction in an acidic medium. Under optimum conditions, the limit of detection (S/N = 3) values were in the range of 2.4-11.2 ng/mL. Recoveries from spiked human urine samples were 95.8%-104.5%. The proposed method applied to the determination of local anaesthetics in human urine achieved satisfactory results. In addition, the mechanism of the reaction is fully discussed. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Dan Liu
- Education Ministry Key Laboratory on Luminescence and Real-Time Analysis, Chemistry and Chemical Engineering, Southwest University, Chongqing, People's Republic of China
| | - Jingdong Peng
- Education Ministry Key Laboratory on Luminescence and Real-Time Analysis, Chemistry and Chemical Engineering, Southwest University, Chongqing, People's Republic of China
| | - Shaopu Liu
- Education Ministry Key Laboratory on Luminescence and Real-Time Analysis, Chemistry and Chemical Engineering, Southwest University, Chongqing, People's Republic of China
| | - Mingqiong Zhou
- Education Ministry Key Laboratory on Luminescence and Real-Time Analysis, Chemistry and Chemical Engineering, Southwest University, Chongqing, People's Republic of China
| | - Jing Zhang
- Education Ministry Key Laboratory on Luminescence and Real-Time Analysis, Chemistry and Chemical Engineering, Southwest University, Chongqing, People's Republic of China
| | - Aiping Li
- Education Ministry Key Laboratory on Luminescence and Real-Time Analysis, Chemistry and Chemical Engineering, Southwest University, Chongqing, People's Republic of China
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Rahbar N, Ramezani Z, Ghanavati J. CuO-nanoparticles modified carbon paste electrode for square wave voltammetric determination of lidocaine: Comparing classical and Box–Behnken optimization methodologies. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.04.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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7
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Pérez-Guaita D, Sánchez-Illana Á, Garrigues S, de la Guardia M. Determination of lidocaine in urine at low ppm levels using dispersive microextraction and attenuated total reflectance–Fourier transform infrared measurements of dry films. Microchem J 2015. [DOI: 10.1016/j.microc.2015.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Rahbar N, Ramezani Z, Babapour A. Electro-Oxidation Mechanism and Direct Square-Wave Voltammetric Determination of Lidocaine With a Carbon-Paste Electrode. Jundishapur J Nat Pharm Prod 2015; 10:e19382. [PMID: 25866720 PMCID: PMC4379891 DOI: 10.17795/jjnpp-19382] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Revised: 08/07/2014] [Accepted: 10/11/2014] [Indexed: 11/25/2022] Open
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Szultka M, Pomastowski P, Railean-Plugaru V, Buszewski B. Microextraction sample preparation techniques in biomedical analysis. J Sep Sci 2014; 37:3094-105. [DOI: 10.1002/jssc.201400621] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Revised: 07/14/2014] [Accepted: 08/06/2014] [Indexed: 01/07/2023]
Affiliation(s)
- Malgorzata Szultka
- Department of Environmental Chemistry and Bioanalytics; Faculty of Chemistry; Nicolaus Copernicus University; Torun Poland
| | - Pawel Pomastowski
- Department of Environmental Chemistry and Bioanalytics; Faculty of Chemistry; Nicolaus Copernicus University; Torun Poland
| | - Viorica Railean-Plugaru
- Department of Environmental Chemistry and Bioanalytics; Faculty of Chemistry; Nicolaus Copernicus University; Torun Poland
- Faculty of Chemistry and Chemical Technology; Moldova State University; Chisinau Republic of Moldova
| | - Boguslaw Buszewski
- Department of Environmental Chemistry and Bioanalytics; Faculty of Chemistry; Nicolaus Copernicus University; Torun Poland
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Yamini Y, Seidi S, Feizbakhsh R, Baheri T, Rezazadeh M. Liquid-phase microextraction based on two immiscible organic solvents followed by gas chromatography with mass spectrometry as an efficient method for the preconcentration and determination of cocaine, ketamine, and lidocaine in human urine samples. J Sep Sci 2014; 37:2364-71. [DOI: 10.1002/jssc.201400268] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Revised: 05/21/2014] [Accepted: 06/05/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Yadollah Yamini
- Department of Chemistry; Tarbiat Modares University; Tehran Iran
| | - Shahram Seidi
- Department of Analytical Chemistry; Faculty of Chemistry; K.N. Toosi University of Technology; Tehran Iran
| | | | | | - Maryam Rezazadeh
- Department of Chemistry; Tarbiat Modares University; Tehran Iran
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Kocúrová L, Balogh IS, Andruch V. A glance at achievements in the coupling of headspace and direct immersion single-drop microextraction with chromatographic techniques. J Sep Sci 2013; 36:3758-68. [DOI: 10.1002/jssc.201300575] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 09/09/2013] [Accepted: 09/09/2013] [Indexed: 01/05/2023]
Affiliation(s)
- Lívia Kocúrová
- Department of Analytical Chemistry; Pavol Jozef Šafárik University in Košice; Slovak Republic
| | - Ioseph S. Balogh
- Department of Chemistry; College of Nyíregyháza; Nyíregyháza Hungary
| | - Vasil Andruch
- Department of Analytical Chemistry; Pavol Jozef Šafárik University in Košice; Slovak Republic
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12
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Es’haghi Z, Babazadeh F. Directly suspended droplet microextraction coupled with high performance liquid chromatography: A rapid and sensitive method for acetaldehyde assay in peritoneal dialysis fluids. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 891-892:52-6. [DOI: 10.1016/j.jchromb.2012.02.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Revised: 01/26/2012] [Accepted: 02/14/2012] [Indexed: 10/28/2022]
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13
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Caris JA, Silva BJG, Moisés ECD, Lanchote VL, Queiroz MEC. Automated analysis of lidocaine and its metabolite in plasma by in-tube solid-phase microextraction coupled with LC-UV for pharmacokinetic study. J Sep Sci 2012; 35:734-41. [DOI: 10.1002/jssc.201100872] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Revised: 11/16/2011] [Accepted: 12/14/2011] [Indexed: 11/09/2022]
Affiliation(s)
- Juciene Aparecida Caris
- Departamento de Química, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto; Universidade de São Paulo; São Paulo; Brazil
| | - Bruno José Gonçalves Silva
- Departamento de Química, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto; Universidade de São Paulo; São Paulo; Brazil
| | | | - Vera Lúcia Lanchote
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto; Universidade de São Paulo; São Paulo; Brazil
| | - Maria Eugênia Costa Queiroz
- Departamento de Química, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto; Universidade de São Paulo; São Paulo; Brazil
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14
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Jain A, Verma KK. Recent advances in applications of single-drop microextraction: A review. Anal Chim Acta 2011; 706:37-65. [DOI: 10.1016/j.aca.2011.08.022] [Citation(s) in RCA: 134] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Revised: 08/11/2011] [Accepted: 08/15/2011] [Indexed: 10/17/2022]
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15
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Chu B, Lou D, Yu P, Hu S, Shen S. Development of an on-column enrichment technique based on C18-functionalized magnetic silica nanoparticles for the determination of lidocaine in rat plasma by high performance liquid chromatography. J Chromatogr A 2011; 1218:7248-53. [DOI: 10.1016/j.chroma.2011.08.053] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Revised: 08/12/2011] [Accepted: 08/16/2011] [Indexed: 11/16/2022]
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16
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Gan X, Liu S, Liu Z, Hu X. Determination of Tetracaine Hydrochloride by Fluorescence Quenching Method with Some Aromatic Amino Acids as Probes. J Fluoresc 2011; 22:129-35. [DOI: 10.1007/s10895-011-0938-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Accepted: 07/28/2011] [Indexed: 11/25/2022]
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Abstract
Liquid-phase microextraction (LPME) emerged in the mid-to-late 1990s, facing up to the main shortcomings of the classical liquid-liquid extraction. Since its origin, this new technique has been in continuous development driven by its successful and widespread use in the analytical sciences. Its inherent properties, such as low sample volume requirement, high preconcentration factors achieved and excellent sample clean-up, make LPME a very useful technique for bioanalytical sample preparation. This review focuses on the main LPME-related techniques, predominantly single-drop microextraction and supported hollow-fiber LPME, paying particular attention to the bioanalytical applications. A general view of the essential trends, including the description of promising extraction modes and solvents, is also highlighted.
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Krylov VA, Krylov AV, Mosyagin PV, Matkivskaya YO. Liquid-phase microextraction preconcentration of impurities. JOURNAL OF ANALYTICAL CHEMISTRY 2011. [DOI: 10.1134/s1061934811040101] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Abstract
Bioanalysis usually requires a preparation procedure for sample cleanup or preconcentration. Conventional sample preparation techniques are often time consuming and labor intensive. Among recent progress in sample preparation, single drop microextraction (SDME) is one of the most efficient techniques providing both sample cleanup and preconcentration capabilities. In SDME, analytes are extracted from a sample solution into an acceptor drop and the drop is introduced to subsequent analysis. Since the volume of the acceptor drop is 1–10 µl or less, the consumption of solvents can be minimized and the preconcentration effect is enhanced. In this review, the basic principles of two-phase and three-phase SDME are described briefly and then recently developed modes of SDME, coupling with analytical instruments, and methods to enhance the drop stability are discussed. Recent applications of SDME to biological samples, including urine, blood and saliva, for the analysis of drugs, metal ions and biomarkers are reviewed.
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Sarafraz Yazdi A, Razavi N. Separation and Determination of Amitriptyline and Nortriptyline in Biological Samples Using Single-Drop Microextraction with GC. Chromatographia 2011. [DOI: 10.1007/s10337-010-1900-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Baniceru M, Manda CV, Popescu SM. Chromatographic analysis of local anesthetics in biological samples. J Pharm Biomed Anal 2011; 54:1-12. [DOI: 10.1016/j.jpba.2010.07.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2010] [Revised: 07/10/2010] [Accepted: 07/13/2010] [Indexed: 10/19/2022]
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22
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Sarafraz Yazdi A, Banihashemi S, Es’haghi Z. Determination of Hg(II) in Natural Waters by Diphenylation by Single-Drop Microextraction: GC. Chromatographia 2010. [DOI: 10.1365/s10337-010-1576-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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23
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Es'haghi Z, Mohtaji M, Hasanzade-Meidani M, Masrournia M. The measurement of ecstasy in human hair by triple phase directly suspended droplet microextraction prior to HPLC-DAD analysis. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:903-8. [PMID: 20207204 DOI: 10.1016/j.jchromb.2010.02.015] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2009] [Revised: 02/08/2010] [Accepted: 02/10/2010] [Indexed: 11/17/2022]
Abstract
New pre-concentration technique, triple phase suspended droplet microextraction (SD-LPME) and liquid chromatography-photodiode array detection was applied to determine ecstasy, MDMA (3,4-methylendioxy-N-methylamphetamine) in hair samples. In this research MDMA in hair was digested and after treatment extracted. The effective parameters were investigated and method was evaluated. Under the optimal conditions, the MDMA was enriched by factor 98.11. Linearity (r=0.9921), was obtained in the range of 10-15,000 ng mL(-1) and detection limit was 0.1 ng mL(-1).
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Affiliation(s)
- Zarrin Es'haghi
- Department of Chemistry, Payame Noor University, Mashhad, Iran. zarrin
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24
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de Freitas DF, Porto CED, Vieira EP, de Siqueira MEPB. Three-phase, liquid-phase microextraction combined with high performance liquid chromatography-fluorescence detection for the simultaneous determination of fluoxetine and norfluoxetine in human plasma. J Pharm Biomed Anal 2010; 51:170-7. [DOI: 10.1016/j.jpba.2009.07.017] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2009] [Revised: 06/24/2009] [Accepted: 07/14/2009] [Indexed: 11/16/2022]
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25
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Jeannot MA, Przyjazny A, Kokosa JM. Single drop microextraction--development, applications and future trends. J Chromatogr A 2009; 1217:2326-36. [PMID: 19932482 DOI: 10.1016/j.chroma.2009.10.089] [Citation(s) in RCA: 176] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2009] [Revised: 10/28/2009] [Accepted: 10/29/2009] [Indexed: 11/29/2022]
Abstract
Single drop microextraction (SDME) has emerged over the last 10-15 years as one of the simplest and most easily implemented forms of micro-scale sample cleanup and preconcentration. In the most common arrangement, an ordinary chromatography syringe is used to suspend microliter quantities of extracting solvent either directly immersed in the sample, or in the headspace above the sample. The same syringe is then used to introduce the solvent and extracted analytes into the chromatography system for identification and/or quantitation. This review article summarizes the historical development and various modes of the technique, some theoretical and practical aspects, recent trends and selected applications.
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Affiliation(s)
- Michael A Jeannot
- Department of Chemistry, St. Cloud State University, 366 Wick Science Building, 720 4th Ave. S., St. Cloud, MN 56301-4498, USA.
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Recent developments and applications of microextraction techniques in drug analysis. Anal Bioanal Chem 2009; 396:339-64. [DOI: 10.1007/s00216-009-3076-2] [Citation(s) in RCA: 139] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2009] [Revised: 08/12/2009] [Accepted: 08/17/2009] [Indexed: 10/20/2022]
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Qin M, Liu S, Liu Z, Hu X. Resonance Rayleigh scattering spectra, non-linear scattering spectra of tetracaine hydrochloride-erythrosin system and its analytical application. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 71:2063-2068. [PMID: 18976950 DOI: 10.1016/j.saa.2008.08.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2008] [Revised: 07/16/2008] [Accepted: 08/13/2008] [Indexed: 05/27/2023]
Abstract
The interaction between erythrosine (ET) and tetracaine hydrochloride (TA) was studied by resonance Rayleigh scattering (RRS), frequency doubling scattering (FDS) and second-order scattering (SOS) combining with absorption spectrum. In a weak acidic medium of Britton-Robinson (BR) buffer solution of pH 4.5, erythrosine reacted with tetracaine hydrochloride to form 1:1 ion-association complex. As a result, the new spectra of RRS, SOS and FDS appeared and their intensities enhanced greatly. The maximum peaks of RRS, SOS and FDS were at 342 nm, 680 nm and 380 nm, respectively. The intensities of the three scattering were directly proportional to the concentration of TA in the range of 0.008-4.2 microg mL(-1) for RRS, 0.027-4.2 microg mL(-1) for SOS and 0.041-4.2 microg mL(-1) for FDS. The methods had very high sensitivities and good selectivities, and the detection limits were 0.003 microg mL(-1) for RRS, 0.008 microg mL(-1) for SOS and 0.012 microg mL(-1) for FDS, respectively. Therefore, a new method was developed to determinate trace amounts of TA. The recovery for the determination of TA in blood serum and urine samples was between 97.0% and 103.8%. In this study, mean polarizability was calculated by AM1 quantum chemistry method. In addition, the reasons for the enhancement of scattering spectra and the energy transfer between absorption, fluorescence and RRS were discussed.
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Affiliation(s)
- Mingyou Qin
- School of Chemistry and Chemical Engineering, Southwest China University, Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, Chongqing 400715, PR China
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28
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Critical review on recent developments in solventless techniques for extraction of analytes. Anal Bioanal Chem 2008; 393:809-33. [DOI: 10.1007/s00216-008-2437-6] [Citation(s) in RCA: 189] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2008] [Accepted: 09/24/2008] [Indexed: 10/21/2022]
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29
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Dawidowicz AL, Kobielski M, Pieniadz J. Anomalous relationship between free drug fraction and its total concentration in drug–protein systems. Eur J Pharm Sci 2008; 35:136-41. [DOI: 10.1016/j.ejps.2008.06.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2008] [Revised: 06/17/2008] [Accepted: 06/25/2008] [Indexed: 10/21/2022]
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30
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Zhang Z, Zhang C, Su X, Ma M, Chen B, Yao S. Carrier-mediated liquid phase microextraction coupled with high performance liquid chromatography for determination of illicit drugs in human urine. Anal Chim Acta 2008; 621:185-92. [DOI: 10.1016/j.aca.2008.05.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2007] [Revised: 05/10/2008] [Accepted: 05/12/2008] [Indexed: 11/25/2022]
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Batlle R, López P, Nerín C, Crescenzi C. Active single-drop microextraction for the determination of gaseous diisocyanates. J Chromatogr A 2008; 1185:155-60. [DOI: 10.1016/j.chroma.2008.01.053] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2007] [Revised: 12/18/2007] [Accepted: 01/22/2008] [Indexed: 11/26/2022]
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Sarafraz-Yazdi A, Raouf-Yazdinejad S, Es’haghi Z. Directly Suspended Droplet Microextraction and Analysis of Amitriptyline and Nortriptyline by GC. Chromatographia 2007. [DOI: 10.1365/s10337-007-0373-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Yang C, Guo L, Liu X, Zhang H, Liu M. Determination of tetrandrine and fangchinoline in plasma samples using hollow fiber liquid-phase microextraction combined with high-performance liquid chromatography. J Chromatogr A 2007; 1164:56-64. [PMID: 17675049 DOI: 10.1016/j.chroma.2007.07.019] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2007] [Revised: 07/09/2007] [Accepted: 07/17/2007] [Indexed: 10/23/2022]
Abstract
Tetrandrine (TET) and fangchinoline (FAN) are basic and highly hydrophobic drugs with logP>5.7. In this work, a simple, inexpensive and efficient liquid-phase microextraction (LPME) technology combined with high-performance liquid chromatography (HPLC) was developed for the simultaneous analysis of tetrandrine and fangchinoline in plasma samples. Tetrahydropalmatine was used as internal standard. Several parameters influencing the efficiency of LPME were investigated and optimized including organic solvent, stirring rate, extraction time, salt concentration, organic modifier and pH. Under the optimal conditions, extraction recoveries from plasma samples were 46% for tetrandrine and 50% for fangchinoline, corresponding to the drugs enriched by a factor of 23 and 25 by LPME, respectively. Excellent sample clean-up was observed and good linearities with correlation coefficients (r) of 0.9979 (FAN) and 0.9995 (TET) were obtained in the range of 15-1000 ngmL(-1). The limits of detection (LOD, S/N=3) were 3.0 ngmL(-1) for FAN and 2.0 ngmL(-1) for TET.
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Affiliation(s)
- Cailing Yang
- Department of Chemistry, Lanzhou University, Lanzhou, China
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Xu L, Basheer C, Lee HK. Developments in single-drop microextraction. J Chromatogr A 2007; 1152:184-92. [PMID: 17097670 DOI: 10.1016/j.chroma.2006.10.073] [Citation(s) in RCA: 263] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2006] [Revised: 10/27/2006] [Accepted: 10/30/2006] [Indexed: 11/22/2022]
Abstract
Single-drop microextraction (SDME) has become a very popular liquid-phase microextraction technique because it is inexpensive, easy to operate and nearly solvent-free. Essentially, SDME combines extraction (and conceivably, cleanup) and concentration in a minimum number of steps, and thereafter, direct extract introduction into an analytical system. In this review, in order to encourage further development of SDME, we focus on its recent developments in its various guises. Its applications when used in combination with different analytical techniques, such as gas chromatography, high-performance liquid chromatography, inductively-coupled plasma mass spectrometry, capillary electrophoresis, mass spectrometry and electrothermal atomic absorption spectrometry, are summarized. SDME does have some limitations, and these are also discussed as well. Finally, an outlook on the future of the technique is given.
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Affiliation(s)
- Li Xu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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Hylton K, Mitra S. Automated, on-line membrane extraction. J Chromatogr A 2007; 1152:199-214. [PMID: 17275830 DOI: 10.1016/j.chroma.2006.12.047] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2006] [Revised: 11/30/2006] [Accepted: 12/01/2006] [Indexed: 11/29/2022]
Abstract
Over the last few years, membranes have been used to develop new approaches in analytical extraction, concentration and cleanup. An important advantage of membrane processes is that the sample and the extraction phase can be continuously brought into contact without physical mixing, and may be directly interfaced to an analytical instrument. This provides the basis for automated, real-time monitoring. Membrane extraction has been applied to a wide range of organic and inorganic analytes, and has been directly interfaced with chromatography, spectroscopy and mass spectrometry. Implementations of membrane extraction are diverse, encompassing different types of membranes, module designs and configurations. This review highlights some of these, and particularly the unique capabilities in automated, and on-line measurements.
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Affiliation(s)
- Kamilah Hylton
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, University Heights, Newark, NJ 07104, USA
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de Oliveira ARM, Cardoso CD, Bonato PS. Stereoselective determination of hydroxychloroquine and its metabolites in human urine by liquid-phase microextraction and CE. Electrophoresis 2007; 28:1081-91. [PMID: 17295421 DOI: 10.1002/elps.200600420] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Liquid-phase microextraction based on polypropylene hollow fibers and CE were applied for the chiral determination of hydroxychloroquine (HCQ) and its metabolites (desethylchloroquine, DCQ; desethylhydroxychloroquine, DHCQ; bisdesethylchloroquine, BDCQ) in human urine. The analytes were extracted from 3 mL of urine spiked with the internal standard (metoprolol) and alkalinized with 250 muL of 2 M NaOH. The analytes were extracted into 1-octanol impregnated in the pores of the hollow fiber, and into an acid acceptor solution inside the hollow fiber. The electrophoretic separations were carried out in 100 mmol/L Tris buffer (pH adjusted to 9.0 with phosphoric acid) containing 1% w/v S-beta-CD and 30 mg/mL HP-beta-CD with a constant voltage of +18 kV. The method was linear over the concentration range of 10-1000 ng/mL for each HCQ stereoisomer and 21-333 ng/mL for each metabolite stereoisomer. Within-day and between-day assay precision and accuracy for the analytes were studied at three concentration levels for each stereoisomer and were lower than 15%. The developed method was applied for the determination of the cumulative urinary excretion of HCQ, DCQ, and DHCQ after oral administration of rac-HCQ to a health volunteer. The results obtained are in agreement with previous literature data.
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Rapid Determination of Nicotine in Saliva by Liquid Phase Microextraction-High Performance Liquid Chromatography. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2007. [DOI: 10.1016/s1872-2040(07)60032-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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