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Lucci E, Antonelli L, Gherardi M, Fanali C, Fanali S, Scipioni A, Lupattelli P, Gentili A, Chankvetadze B. A liquid chromatography-mass spectrometry method for the enantioselective multiresidue determination of nine chiral agrochemicals in urine using an enrichment procedure based on graphitized carbon black. Anal Bioanal Chem 2024; 416:1127-1137. [PMID: 38108844 DOI: 10.1007/s00216-023-05098-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/02/2023] [Accepted: 12/06/2023] [Indexed: 12/19/2023]
Abstract
Many agrochemicals are chiral molecules, and most of them are marketed as racemates or diastereomeric mixtures. Stereoisomers that are not the active enantiomer have little or no pesticidal activity and can exert serious toxic effects towards non-target organisms. Thus, investigating the possible exposure to different isomers of chiral pesticides is an urgent need. The present work was aimed at developing a new enantioselective high-performance liquid chromatography-mass spectrometry method for the simultaneous determination of nine chiral pesticides in urine. Two solid-phase extraction (SPE) procedures, based on different carbon-based sorbents (graphitized carbon black (GCB) and buckypaper (BP)), were developed and compared. By using GCB, all analytes were recovered with yields ranging from 60 to 97%, while BP allowed recoveries greater than 54% for all pesticides except those with acid characteristics. Baseline separation was achieved for the enantiomers of all target agrochemicals on a Lux Cellulose-2 column within 24 min under reversed-phase mode. The developed method was then validated according to the FDA guidelines for bioanalytical methods. Besides recovery, the other evaluated parameters were precision (7-15%), limits of detection (0.26-2.21 µg/L), lower limits of quantitation (0.43-3.68 µg/L), linear dynamic range, and sensitivity. Finally, the validated method was applied to verify the occurrence of the pesticide enantiomers in urine samples from occupationally exposed workers.
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Affiliation(s)
- Elena Lucci
- Department of Chemistry, Sapienza University, Rome, Italy
| | | | - Monica Gherardi
- INAIL-DiMEILA, Chemical Risk Laboratory, Monte Porzio Catone Research Centre, Rome, Italy
| | - Chiara Fanali
- Department of Science and Technology for Humans and the Environment, University Campus Bio-Medico of Rome, Rome, Italy
| | - Salvatore Fanali
- School in Nanoscience and Advanced Technologies, University of Verona, Verona, Italy
| | - Anita Scipioni
- Department of Chemistry, Sapienza University, Rome, Italy
| | | | | | - Bezhan Chankvetadze
- Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences, Tbilisi State University, Tbilisi, Georgia
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Fanali C, Della Posta S, Gentili A, Chankvetadze B, Fanali S. Recent developments in electromigration techniques related to pharmaceutical and biomedical analysis - A review. J Pharm Biomed Anal 2023; 235:115647. [PMID: 37625282 DOI: 10.1016/j.jpba.2023.115647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 08/10/2023] [Accepted: 08/12/2023] [Indexed: 08/27/2023]
Abstract
The analysis of pharmaceutical compounds is an important research topic as the use of different drugs affects people's daily life for the treatment of diseases. In addition to the widespread use of the internet, counterfeit drugs have appeared in the market. The development of modern analytical techniques, reliable, precise, sensitive, and rapid methods, has provided powerful means of analysis used in various fields such as drug production, quality control, determination of impurities and/or metabolites, biochemistry, pharmacokinetics, etc. Analytical techniques so far used in the pharmaceutical analysis include high-performance liquid chromatography (HPLC), gas chromatography (GC), super/sub-critical fluid chromatography (SFC), and capillary electromigration techniques such as capillary electrophoresis (CE) and rather rarely capillary electrochromatography (CEC). CE has some advantages over other techniques, e.g., very high efficiency, reduced costs (use of minute volumes of solvents and samples), the possibility to use different separation mechanisms, etc. In this review paper, the main features and limitations of the capillary electromigration techniques (especially CE) are discussed. Some selected applications of CE to the analysis of pharmaceutical compounds published in the period 2021-2023 (May) are reported.
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Affiliation(s)
- Chiara Fanali
- Department of Science and Technology for Humans and the Environment, University Campus Bio-Medico of Rome, Rome, Italy.
| | - Susanna Della Posta
- Department of Science and Technology for Humans and the Environment, University Campus Bio-Medico of Rome, Rome, Italy
| | - Alessandra Gentili
- Department of Chemistry, Sapienza University, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Bezhan Chankvetadze
- Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences, Tbilisi State University, Tbilisi, Georgia
| | - Salvatore Fanali
- Scientific Board of the Ph.D. School in Nanosciences and Advanced Technologies, University of Verona, Verona, Italy
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Antonelli L, Lucci E, Fanali S, Fanali C, Gentili A, Chankvetadze B. An enantioselective high-performance liquid chromatography-mass spectrometry method to study the fate of quizalofop-P-ethyl in soil and selected agricultural products. J Chromatogr A 2023; 1707:464289. [PMID: 37573727 DOI: 10.1016/j.chroma.2023.464289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/05/2023] [Accepted: 08/07/2023] [Indexed: 08/15/2023]
Abstract
In this study, the attention was focused on quizalofop-ethyl, a chiral herbicide whose formulation has recently been marketed as quizalofop-P-ethyl, i.e. the (+)-enantiomer exhibiting herbicidal activity. To verify the real enantiomeric purity of this product as well as to study its environmental fate, the enantioselective separation of the P- and M- enantiomers of quizalofop-ethyl was achieved on Lux Cellulose-2 column (3‑chloro,4-methylphenilcarbamate cellulose) under isocratic conditions in polar organic mode. Once established that the commercial formulation contains ˜ 0.6% (enantiomeric fraction) of M as an impurity, an HPLC-MS/MS method was developed, validated and applied to the analysis of soil, carrots and turnips treated with the herbicide. A simple solid-liquid extraction allowed recoveries greater than 70%; limits of detections of P and M enantiomers were below 5 ng g-1. The analyses of the real samples showed a modification of the enantiomeric fraction of quizalofop-M-ethyl between the commercial formulation (EFM = 0.63 ± 0.03%) and the analysed matrices (EFM = 7.6 ± 0.1% for carrots; EFM = 0% for the other matrices). This outcome highlighted the occurrence of an enantioselective biotic dissipation, responsible for a greater persistency of the distomer in carrots. On the other hand, since screening analyses revealed the occurrence of residues of the metabolite quizalofop-acid with the same EFs as the ester precursor, it was concluded that the hydrolytic conversion was an abiotic process.
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Affiliation(s)
- Lorenzo Antonelli
- Department of Chemistry, Sapienza University, P.le Aldo Moro 5, Rome 00185, Italy
| | - Elena Lucci
- Department of Chemistry, Sapienza University, P.le Aldo Moro 5, Rome 00185, Italy
| | - Salvatore Fanali
- Teaching Committee of PhD. School in Nanoscience and Advanced Technologies, University of Verona, Verona, Italy
| | - Chiara Fanali
- Department of Science and Technology for Humans and the Environment, University Campus Bio-Medico of Rome, Rome, Italy
| | - Alessandra Gentili
- Department of Chemistry, Sapienza University, P.le Aldo Moro 5, Rome 00185, Italy.
| | - Bezhan Chankvetadze
- Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences, Iv. Javakhishvili Tbilisi State University, Chavchavadze Ave 3, Tbilisi 0179, Georgia
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Salido-Fortuna S, Bosco CD, Gentili A, Castro-Puyana M, Marina ML, D'Orazio G, Fanali S. Enantiomeric analysis of drugs in water samples by using liquid-liquid microextraction and nano-liquid chromatography. Electrophoresis 2023; 44:1177-1186. [PMID: 37276371 DOI: 10.1002/elps.202300025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 05/09/2023] [Accepted: 05/17/2023] [Indexed: 06/07/2023]
Abstract
The nano-LC technique is increasingly used for both fast studies on enantiomeric analysis and test beds of novel stationary phases due to the small volumes involved and the short conditioning and analysis times. In this study, the enantioseparation of 10 drugs from different families was carried out by nano-LC, utilizing silica with immobilized amylose tris(3-chloro-5-methylphenylcarbamate) column. The effect on chiral separation caused by the addition of different salts to the mobile phase was evaluated. To simultaneously separate as many enantiomers as possible, the effect of buffer concentration in the mobile phase was studied, and, to increase the sensitivity, a liquid-liquid microextraction based on the use of isoamyl acetate as sustainable extraction solvent was applied to pre-concentrate four chiral drugs from tap and environmental waters, achieving satisfactory recoveries (>70%).
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Affiliation(s)
- Sandra Salido-Fortuna
- Department of Chemistry, University of "La Sapienza", Rome, Italy
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain
| | - Chiara Dal Bosco
- Department of Chemistry, University of "La Sapienza", Rome, Italy
| | | | - María Castro-Puyana
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain
| | - María Luisa Marina
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain
| | - Giovanni D'Orazio
- Istituto per i Sistemi Biologici (ISB), CNR - Consiglio Nazionale delle Ricerche, Montelibretti, Rome, Italy
| | - Salvatore Fanali
- School in Nanoscience and Advanced Technologies, University of Verona, Verona, Italy
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Bosco CD, De Cesaris MG, Felli N, Lucci E, Fanali S, Gentili A. Carbon nanomaterial-based membranes in solid-phase extraction. Mikrochim Acta 2023; 190:175. [PMID: 37022492 PMCID: PMC10079727 DOI: 10.1007/s00604-023-05741-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 03/09/2023] [Indexed: 04/07/2023]
Abstract
Carbon nanomaterials (CNMs) have some excellent properties that make them ideal candidates as sorbents for solid-phase extraction (SPE). However, practical difficulties related to their handling (dispersion in the atmosphere, bundling phenomena, reduced adsorption capability, sorbent loss in cartridge/column format, etc.) have hindered their direct use for conventional SPE modes. Therefore, researchers working in the field of extraction science have looked for new solutions to avoid the above-mentioned problems. One of these is the design of CNM-based membranes. These devices can be of two different types: membranes that are exclusively composed of CNMs (i.e. buckypaper and graphene oxide paper) and polysaccharide membranes containing dispersed CNMs. A membrane can be used either as a filter, operating under flow-through mode, or as a rotating device, operating under the action of magnetic stirring. In both cases, the main advantages arising from the use of membranes are excellent results in terms of transport rates, adsorption capability, high throughput, and ease of employment. This review covers the preparation/synthesis procedures of such membranes and their potential in SPE applications, highlighting benefits and shortcomings in comparison with conventional SPE materials (especially, microparticles carbonaceous sorbents) and devices. Further challenges and expected improvements are addressed too.
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Affiliation(s)
- Chiara Dal Bosco
- Department of Chemistry, Sapienza University, P.le Aldo Moro 5, 00185, Rome, Italy
| | | | - Nina Felli
- Department of Chemistry, Sapienza University, P.le Aldo Moro 5, 00185, Rome, Italy
| | - Elena Lucci
- Department of Chemistry, Sapienza University, P.le Aldo Moro 5, 00185, Rome, Italy
| | - Salvatore Fanali
- Teaching Committee of Ph.D. School in Nanoscience and Advanced Technologies, University of Verona, Strada Le Grazie, 15 37129, Verona, Italy
| | - Alessandra Gentili
- Department of Chemistry, Sapienza University, P.le Aldo Moro 5, 00185, Rome, Italy.
- Hydro-Eco Research Centre, Sapienza University, Rome, Italy.
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Lucci E, Dal Bosco C, Antonelli L, Fanali C, Fanali S, Gentili A, Chankvetadze B. Enantioselective high-performance liquid chromatographic separations to study occurrence and fate of chiral pesticides in soil, water, and agricultural products. J Chromatogr A 2022; 1685:463595. [DOI: 10.1016/j.chroma.2022.463595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/17/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022]
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Abstract
Background:
The extraction of vitamins from complex matrices, such as pharmaceutical
and biological samples, is a demanding task. Progress in material science is revolutionizing sample
preparation, leading to the development of more efficient, sensitive, and selective analytical methods.
In particular, the evolution of solid-phase extraction towards miniaturized techniques is closely related
to the introduction of nanomaterials as new sorbents. Microextraction techniques, both solid-based
and liquid-based, allow for the reduction of solvent and sample volumes, as well as the sample processing
times. In many cases, these procedures are also environmentally friendly. Moreover, the substitution
of traditional organic solvents with the neoteric ones is another current trend in analytical
chemistry.
Aims:
The aim of this review is to introduce readers to the innovative solutions available for the
extraction of vitamins from matrices of different complexity.
Methods:
Research papers in the literature of the last five years are reviewed, providing a critical
description of the most original and interesting sample preparation approaches devoted to vitamin
extraction.
Results:
Among the last five years of literature concerning the analysis of vitamins in the clinical and
pharmaceutical sectors, only 40% of works applied some innovative or green approaches to sample
preparation. However, a general trend is the reduction of solvent volumes and sample processing
times.
Conclusion:
The great potential of microextraction techniques based on nanomaterials and neoteric
solvents has not been fully exploited yet in the clinical and pharmaceutical fields. Considering the
high cost of carbon-based nanomaterials, it can be expected that in the near future, liquid microextraction
techniques based on neoteric solvents will be more effective for sample preparation. Thanks
to their low cost, environmental compatibility, simplicity, speediness and high enrichment factor,
these extractive techniques are particularly significant for vitamin analysis.
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Affiliation(s)
- Giovanni D’Orazio
- Istituto per i Sistemi Biologici (ISB), CNR-Consiglio Nazionale delle Ricerche-Monterotondo Rome, Italy
| | | | - Salvatore Fanali
- Ph.D. School in Natural Science and Engineering, University of Verona, Strada Le Grazie, 15, 37129, Verona, Italy
| | - Chiara Fanali
- Unit of Food Science and Nutrition, Department of Medicine, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo 21, 00128, Rome, Italy
| | - Chiara Dal Bosco
- Chemistry Department, University of Rome La Sapienza, 00185 Rome, Italy
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Fanali C, D'Orazio G, Gentili A, Fanali S. Potentiality of miniaturized techniques for the analysis of drugs of abuse. Electrophoresis 2021; 43:190-200. [PMID: 34148240 DOI: 10.1002/elps.202100150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/13/2021] [Accepted: 06/17/2021] [Indexed: 11/11/2022]
Abstract
Capillary electromigration (CE) and liquid chromatographic techniques (CLC/nano-LC) are miniaturized techniques offering distinct advantages over conventional ones in the field of separation science. Among these, high efficiency, high chromatographic resolution, and use of minute volumes of both mobile phase and sample volumes are the most important. CE and CLC/nano-LC have been applied to the analysis of many compounds including peptides, proteins, drugs, enantiomers, ions, etc. Over the years, the methods described here have also been used for the analysis of compounds of clinical, forensic, and toxicological interest. In this review article, the main features of the mentioned techniques are summarized. Their potentiality for the analysis of drugs of abuse are discussed. Some selected applications in this field in the period of 2015-present are also reported.
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Affiliation(s)
- Chiara Fanali
- Faculty of Science, University Campus Bio-Medico of Rome, Rome, Italy
| | - Giovanni D'Orazio
- Institute for the Biological Systems, National Research Council, Monterotondo, Italy
| | | | - Salvatore Fanali
- Teaching Committee of Ph.D. School in Natural Science and Engineering, University of Verona, Verona, Italy
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Abstract
In this review paper, miniaturized techniques, including both electromigration and liquid
chromatographic techniques, have been discussed considering their main features in the analytical field
for the separation and analysis of Nonsteroidal Anti-inflammatory Drugs (NSAIDs). In Capillary Electrophoresis
(CE) and nano-liquid chromatography (nano-LC), separation is performed in capillaries
with Internal Diameter (I.D.) lower than 100 μm and therefore flow rates in the range 100-1000 nL/min
are applied. Therefore, due to the low flow rate, high mass sensitivity can be obtained. Usually, conventional
UV detectors are used on-line; however, these techniques can be coupled with Mass Spectrometry
(MS). CE and nano-LC have also been applied to the separation of NSAIDs using silica stationary
phases (SP) modified with C<sub>18</sub> promoting interaction with analytes mainly based on hydrophobic
interaction. Besides, the use of chiral SP was found to be effective for the chiral resolution of these
compounds. In addition to silica phases, monolithic (both organic and inorganic) material has also been
used. Although most of the presented studies aimed to demonstrate the usefulness of the considered
microfluidic techniques, some applications to real samples have also been reported.
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Affiliation(s)
- Chiara Fanali
- Faculty of Science, University Campus Bio-Medico of Rome, Via Alvaro del Portillo 21, 00128 Rome,Italy
| | - Giovanni D’Orazio
- Istituto per i Sistemi Biologici, Consiglio Nazionale delle Ricerche, Via Salaria km 29,300 - 00015 Monterotondo,Italy
| | - Alessandra Gentili
- Department of Chemistry, University of Rome “La Sapienza“, Piazzale Aldo Moro 5, P.O. Box 34, Posta 62, 00185 Roma,Italy
| | - Salvatore Fanali
- Teaching Committee of Ph.D. School in Natural Science and Engineering, University of Verona, Verona,Italy
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Fanali S, Chankvetadze B. History, advancement, bottlenecks, and future of chiral capillary electrochromatography. J Chromatogr A 2020; 1637:461832. [PMID: 33383238 DOI: 10.1016/j.chroma.2020.461832] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/16/2020] [Accepted: 12/17/2020] [Indexed: 02/06/2023]
Abstract
Capillary electrochromatography (CEC) represents a technique with less than 30 years of intense development and in this period this technique has seen huge promise, fast development, stagnation, and significant decline of innovative activity. The major goal of the present overview is not to present an extensive review of the literature on chiral CEC but to analyze the reasons for this dramatic development and attempting to answer questions such as: 1) Was the potential of CEC reasonably evaluated in 1990s before starting the explosive development in this field? 2) Did the development of this technique take the right track? 3) What other developments and competitive trends led to stagnation in the advancement of CEC? 4) Why is the activity in this field currently decreasing? 5) What are the current challenges and promises and what is the future of chiral CEC?
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Affiliation(s)
- Salvatore Fanali
- Teaching Committee of Ph.D. School in Natural Science and Engineering, University of Verona, Strada Le Grazie, 15, 37129 Verona, Italy
| | - Bezhan Chankvetadze
- Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences, Tbilisi State University, Chavchavadze Ave 3, 0179 Tbilisi, Georgia.
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Tomai P, Gentili A, Curini R, Gottardo R, Franco Tagliaro, Fanali S. Dispersive liquid-liquid microextraction, an effective tool for the determination of synthetic cannabinoids in oral fluid by liquid chromatography-tandem mass spectrometry. J Pharm Anal 2020; 11:292-298. [PMID: 34277117 PMCID: PMC8264461 DOI: 10.1016/j.jpha.2020.11.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 11/12/2020] [Accepted: 11/16/2020] [Indexed: 11/16/2022] Open
Abstract
In the present work, dispersive liquid-liquid microextraction (DLLME) was used to extract six synthetic cannabinoids (JWH-018, JWH-019, JWH-073, JWH-200, or WIN 55,225, JWH-250, and AM-694) from oral fluids. A rapid baseline separation of the analytes was achieved on a bidentate octadecyl silica hydride phase (Cogent Bidentate C18; 4.6 mm × 250 mm, 4 μm) maintained at 37 °C, by eluting in isocratic conditions (water:acetonitrile (25:75, V/V)). Detection was performed using positive electrospray ionization-tandem mass spectrometry. The parameters affecting DLLME (pH and ionic strength of the aqueous phase, type and volume of the extractant and dispersive solvent, vortex and centrifugation time) were optimized for maximizing yields. In particular, using 0.5 mL of oral fluid, acetonitrile (1 mL), was identified as the best option, both as a solvent to precipitate proteins and as a dispersing solvent in the DLLME procedure. To select an extraction solvent, a low transition temperature mixture (LTTM; composed of sesamol and chlorine chloride with a molar ratio of 1:3) and dichloromethane were compared; the latter (100 μL) was proved to be a better extractant, with recoveries ranging from 73% to 101 % by vortexing for 2 min. The method was validated according to the guidelines of Food and Drug Administration bioanalytical methods: intra-day and inter-day precisions ranged between 4 % and 18 % depending on the spike level and analyte; limits of detection spanned from 2 to 18 ng/mL; matrix-matched calibration curves were characterized by determination coefficients greater than 0.9914. Finally, the extraction procedure was compared with previous methods and with innovative techniques, presenting superior reliability, rapidity, simplicity, inexpensiveness, and efficiency.
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Affiliation(s)
- Pierpaolo Tomai
- Department of Chemistry, Sapienza University, P.le Aldo Moro 5, 00185, Rome, Italy
| | - Alessandra Gentili
- Department of Chemistry, Sapienza University, P.le Aldo Moro 5, 00185, Rome, Italy
| | - Roberta Curini
- Department of Chemistry, Sapienza University, P.le Aldo Moro 5, 00185, Rome, Italy
| | - Rossella Gottardo
- Department of Diagnostics and Public Health, University of Verona, Verona, Italy and Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Franco Tagliaro
- Department of Diagnostics and Public Health, University of Verona, Verona, Italy and Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Salvatore Fanali
- Teaching Committee of Ph.D. School in Natural Science and Engineering University of Verona, Verona, Italy
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Chankvetadze B, Fanali S. Editorial. J Chromatogr A 2020; 1627:461441. [DOI: 10.1016/j.chroma.2020.461441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Tomai P, Gentili A, Fanali S, Picó Y. Multi-residue determination of organic micro-pollutants in river sediment by stir-disc solid phase extraction based on oxidized buckypaper. J Chromatogr A 2020; 1621:461080. [DOI: 10.1016/j.chroma.2020.461080] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/23/2020] [Accepted: 03/25/2020] [Indexed: 01/23/2023]
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14
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D'Orazio G, Fanali C, Fanali S, Gentili A, Karchkhadze M, Chankvetadze B. Further study on enantiomer resolving ability of amylose tris(3-chloro-5-methylphenylcarbamate) covalently immobilized onto silica in nano-liquid chromatography and capillary electrochromatography. J Chromatogr A 2020; 1623:461213. [PMID: 32505297 DOI: 10.1016/j.chroma.2020.461213] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/02/2020] [Accepted: 05/05/2020] [Indexed: 10/24/2022]
Abstract
In the present study separation of enantiomers of some chiral neutral, basic and weakly acidic analytes was investigated on the chiral stationary phase (CSP) made by covalent immobilization of amylose tris(3-chloro-5-methylphenylcarbamate) onto aminopropylsilanized (APS) silica in nano-liquid chromatography (nano-LC) in aqueous methanol or acetonitrile mixtures. It has been shown that similar to high-performance liquid chromatography (HPLC) and supercritical fluid chromatography (SFC) this chiral selector is useful for separation of enantiomers of neutral, basic and acidic analytes also in nano-LC. In comparison to our previous research, in which the chiral selector (CS) was bonded on native silica, in this study, the CS was immobilized on APS silica in order to improve chromatographic performance towards basic analytes. In fact, some improvement was observed and surprisingly not only for basic but also for neutral and acidic analytes. Again, quite unexpectedly almost no electroosmotic flow (EOF) was observed in capillaries packed with ca. 20% (w/w) amylose tris(3-chloro-5-methylphenylcarbamate) immobilized onto APS silica although the same APS silica before attachment of chiral selector exhibited significant EOF. In order to generate EOF in the capillaries with the CSP and enable capillary electrochromatographic (CEC) experiment on it, the short segment of the capillary column was packed with APS silica without chiral selector. The EOF in such capillary enabled CEC experiment and some preliminary results are reported here.
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Affiliation(s)
- Giovanni D'Orazio
- Istituto per i Sistemi Biologici (ISB), CNR- Consiglio Nazionale delle Ricerche, Via Salaria Km 29,300 - 00015 Monterotondo (Rome), Italy
| | - Chiara Fanali
- Department of Science and Technology for Humans and the Environment, University Campus Bio-Medico of Rome, Via Alvaro del Portillo 21, 00128 Rome, Italy
| | - Salvatore Fanali
- Teaching Committee of Ph.D. School in Natural Science and Engineering, University of Verona, Strada Le Grazie, 15 - 37129 Verona, Italy.
| | - Alessandra Gentili
- Department of Chemistry "Sapienza" University of Rome, P.le Aldo Moro 5, 00185, Rome, Italy
| | - Marina Karchkhadze
- Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences, Iv. Javakhishvili Tbilisi State University, Chavchavadze Ave 3, 0179 Tbilisi, Georgia
| | - Bezhan Chankvetadze
- Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences, Iv. Javakhishvili Tbilisi State University, Chavchavadze Ave 3, 0179 Tbilisi, Georgia
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Luo R, Han H, Liu J, Xu D, Wang Q, Fanali S, Jiang Z. Preparation and application of teicoplanin functionalized polymeric monolith for enantioseparation of chiral drugs. J Pharm Biomed Anal 2020; 182:113129. [PMID: 32036299 DOI: 10.1016/j.jpba.2020.113129] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 01/23/2020] [Accepted: 01/24/2020] [Indexed: 10/25/2022]
Abstract
A novel chiral stationary phase (CSP), based on a monolithic organic polymer chemically modified with teicoplanin, was fabricated within a 100 μm I.D. fused silica capillary. The teicoplanin was firstly derivatized with 2-isocyanatoethyl methacrylate (ICNEML) and then thermally co-polymerized with the crosslinker ethylene dimethacrylate (EDMA) in presence of porogens (methanol and dimethylsulfoxide). The optimal experimental conditions (e.g., concentration and ratio of the reagents), considering enantioresolution and permeability, were systematically investigated. The prepared monolith was evaluated using scanning electron microscopy, and the column exhibited quite good morphology. In order to further evaluate the enantioresolving power of the poly(ICNEML-teicoplanin-co-EDMA) monolith, a series of basic and acidic chiral compounds were analyzed using an isocratic mode of polar organic solvents (methanol and acetonitrile) or the same solvents in combination with water (reversed-phase) by nano-liquid chromatography. Five mandelic acids and six derivatized amino acids were enantioresolved under reversed-phase mode (Rs = 1.22-3.47 and α = 1.43-6.33). This monolithic teicoplanin-CSP was also effective in the enantioseparations of 17 amino alcohol drugs employing polar-organic phase mode (MeOH/ACN/TEA/HOAc (80/20/0.03/0.055, v/v/v/v)). Ten of them were baseline enantioresolved (alprenolol, betaxolol, clenbuterol, isoproterenol, metoprolol, pindolol, propranolol, salbutamol, sotalol, tertatolol) (Rs = 1.55-2.48 and α = 1.21-1.55), while the others were partially enantioseparated (Rs = 1.14-1.48).
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Affiliation(s)
- Rongying Luo
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou, 510632, China
| | - Hai Han
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou, 510632, China; International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, Guangzhou, 510632, China
| | - Jia Liu
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou, 510632, China
| | - Dongsheng Xu
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou, 510632, China; Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Ctra. Madrid-Barcelona Km. 33.600, 28871, Alcalá de Henares (Madrid), Spain
| | - Qiqin Wang
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou, 510632, China; International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, Guangzhou, 510632, China
| | - Salvatore Fanali
- Ph.D. School in Natural Science and Engineering, University of Verona, Strada Le Grazie, 15-37129, Verona, Italy
| | - Zhengjin Jiang
- Institute of Pharmaceutical Analysis, College of Pharmacy, Jinan University, Guangzhou, 510632, China; International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, Guangzhou, 510632, China.
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16
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Fanali S. Editorial on “Cyclodextrin-based sorbents for solid phase extraction” by Alessandra Gentili. J Chromatogr A 2020; 1609:460756. [DOI: 10.1016/j.chroma.2019.460756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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17
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18
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D'Orazio G, Fanali C, Gentili A, Tagliaro F, Fanali S. Nano-liquid chromatography for enantiomers separation of baclofen by using vancomycin silica stationary phase. J Chromatogr A 2019; 1605:360358. [PMID: 31337499 DOI: 10.1016/j.chroma.2019.07.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 07/03/2019] [Accepted: 07/06/2019] [Indexed: 01/06/2023]
Abstract
The chiral separation of baclofen (Bac) was obtained by nano-liquid chromatography tandem mass spectrometry (nano-LC-MS/MS) using a 100 μm I.D. fused silica capillary column packed with silica particles chemically modified with vancomycin. Various experimental parameters, such as composition (buffer concentration, water content, organic modifier) and pH of the mobile phase and sample solvent were investigated for method optimization. In order to increase the sensitivity an on-column focusing procedure was applied. Acceptable separation of Bac enantiomers was obtained in less than 11 min eluting in isocratic mode, with 90:10 MeOH/water (v/v) containing 10 mM ammonium acetate at pH 4.5. These optimized experimental conditions were applied to the analysis of human plasma samples spiked with racemic mixture of Bac. The use of a Buckypaper disc as sorbent membrane allows one to recover both enantiomers with yields ≥ 65%. The method was fully validated, following the identification criteria of the European Commission Decision 2002/657/EC.
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Affiliation(s)
- Giovanni D'Orazio
- Istituto per i Sistemi Biologici (ISB), CNR-Consiglio Nazionale delle Ricerche, Monterotondo, Rome, Italy
| | - Chiara Fanali
- Department of Medicine, University Campus Bio-Medico of Rome, Rome, Italy
| | | | - Franco Tagliaro
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, Verona, Italy; Pharmacokinetics and Metabolomics Laboratory of the I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Salvatore Fanali
- Teaching Committee of Ph.D. School in Natural Science and Engineering, University of Verona, Verona, Italy.
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Fanali S, Chankvetadze B. Some thoughts about enantioseparations in capillary electrophoresis. Electrophoresis 2019; 40:2420-2437. [PMID: 31081552 DOI: 10.1002/elps.201900144] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/22/2019] [Accepted: 04/23/2019] [Indexed: 12/20/2022]
Abstract
In this overview the goal of the authors was to analyze from the historical perspective the reasons of success and failure of chiral capillary electrophoresis. In addition, the current trends are analyzed, unique advantages of capillary electrophoresis are highlighted and some future directions are discussed.
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Affiliation(s)
- Salvatore Fanali
- School in Natural Science and Engineering, University of Verona, Verona, Italy
| | - Bezhan Chankvetadze
- Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences, Tbilisi State University, Tbilisi, Georgia
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20
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Fanali C, D'Orazio G, Gentili A, Fanali S. Analysis of Enantiomers in Products of Food Interest. Molecules 2019; 24:molecules24061119. [PMID: 30901832 PMCID: PMC6472275 DOI: 10.3390/molecules24061119] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/11/2019] [Accepted: 03/20/2019] [Indexed: 12/23/2022] Open
Abstract
The separation of enantiomers has been started in the past and continues to be a topic of great interest in various fields of research, mainly because these compounds could be involved in biological processes such as, for example, those related to human health. Great attention has been devoted to studies for the analysis of enantiomers present in food products in order to assess authenticity and safety. The separation of these compounds can be carried out utilizing analytical techniques such as gas chromatography, high-performance liquid chromatography, supercritical fluid chromatography, and other methods. The separation is performed mainly employing chromatographic columns containing particles modified with chiral selectors (CS). Among the CS used, modified polysaccharides, glycopeptide antibiotics, and cyclodextrins are currently applied.
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Affiliation(s)
- Chiara Fanali
- Department of Medicine, University Campus Bio-Medico of Rome, Via Alvaro del Portillo 21, 00128 Rome, Italy.
| | - Giovanni D'Orazio
- Istituto per I Sistemi Biologici, Consiglio Nazionale delle Ricerche, Via Salaria km 29, 300-00015 Monterotondo, Italy.
| | - Alessandra Gentili
- Department of Chemistry, University of Rome "La Sapienza", Piazzale Aldo Moro 5, P.O. Box 34, Posta 62, 00185 Roma, Italy.
| | - Salvatore Fanali
- Teaching Committee of Ph.D. School in Natural Science and Engineering, University of Verona, 37134 Verona, Italy.
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21
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D'Orazio G, Fanali C, Gentili A, Fanali S. Enantioseparation of tryptophan and its unnatural derivatives by nano‐LC on CSP‐teicoplanin silica based. Electrophoresis 2019; 40:1966-1971. [DOI: 10.1002/elps.201800508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 02/01/2019] [Accepted: 02/01/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Giovanni D'Orazio
- Institute of Chemical MethodologiesItalian National Research Council Monterotondo Italy
| | - Chiara Fanali
- Unit of Food Science and NutritionDepartment of MedicineUniversità Campus Bio‐Medico di Roma Rome Italy
| | - Alessandra Gentili
- Department of ChemistryFaculty of MathematicalPhysical and Natural SciencesUniversity of Rome “La Sapienza” Rome Italy
| | - Salvatore Fanali
- Ph.D. School in Natural Science and EngineeringUniversity of Verona Verona Italy
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22
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Gentili A, Dal Bosco C, Fanali S, Fanali C. Large-scale profiling of carotenoids by using non aqueous reversed phase liquid chromatography - photodiode array detection - triple quadrupole linear ion trap mass spectrometry: Application to some varieties of sweet pepper (Capsicum annuum L.). J Pharm Biomed Anal 2019; 164:759-767. [PMID: 30481639 DOI: 10.1016/j.jpba.2018.11.042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 11/17/2018] [Accepted: 11/17/2018] [Indexed: 11/30/2022]
Abstract
Analysis of carotenoids is very complex and demanding in terms of both separation and detection. In this article, an analytical strategy relying on high-performance liquid chromatography-photodiode array detection-tandem mass spectrometry (HPLC-PAD-MS/MS) is presented for the large-scale screening of these phytochemicals. Separation was realized by means of Non-Aqueous Reversed Phase (NARP) chromatography on a triacontyl stationary phase kept at subambient temperature, using a mobile phase compatible with atmospheric pressure chemical ionization (APCI). The standards of 14 analytes were used to optimize the method and to predict the chromatographic behaviour of untargeted carotenoids. MS and MS/MS data, obtained during Information Dependent Acquisition (IDA) experiments, were utilized to set up a sensitive HPLC- selected reaction monitoring (SRM) method. Relative abundance between SRM ion currents (ion ratio) allowed the MS distinction of structural isomers (for example, bicyclic, monocyclic and acyclic isomers), while the identification of geometrical isomers was based on Qratio and fine structure, as calculated from UV-vis spectra. The comparison of LC-PAD- SRM chromatograms, acquired after applying two different extraction procedures (matrix solid-phase dispersion and overnight cold saponification), allowed verifying that sweet peppers are a good source of xanthophylls, prevalently occurring as esterified forms. The overall strategy could identify more than 40 carotenoids in some sweet pepper varieties (Jolly, horn and sweet chili pepper) available on the Italian and European food market.
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Affiliation(s)
- Alessandra Gentili
- Department of Chemistry, Faculty of Mathematical, Physical and Natural Sciences, University of Rome "La Sapienza", P.le Aldo Moro 5, 00185, Rome, Italy
| | - Chiara Dal Bosco
- Department of Chemistry, Faculty of Mathematical, Physical and Natural Sciences, University of Rome "La Sapienza", P.le Aldo Moro 5, 00185, Rome, Italy
| | - Salvatore Fanali
- Ph.D. School in Natural Science and Engineering, University of Verona, Strada Le Grazie, 15, 37129, Verona, Italy.
| | - Chiara Fanali
- Unit of Food Science and Nutrition, Department of Medicine, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo 21, 00128, Rome, Italy
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Fanali C, Fanali S. Application of Sub-2 Micron Particle Silica Hydride Derivatized with Vancomycin for Chiral Separations by Nano-Liquid Chromatography. Methods Mol Biol 2019; 1985:239-250. [PMID: 31069738 DOI: 10.1007/978-1-4939-9438-0_13] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
1.8 μm Silica hydride particles have been derivatized with vancomycin and applied to the enantioseparation of some racemic herbicides and nonsteroidal anti-inflammatory drugs (NSAIDs) by nano-liquid chromatography. The chiral stationary phase (CSP) was packed for only 11 cm and the enantiomers were separated utilizing a laboratory-assembled instrumentation. The new CSP was very effective for the separation of the above mentioned acidic compounds, while poor resolutions were obtained for basic compounds. Mixtures of acetate buffer with methanol or acetonitrile allowed the chiral resolution of all compounds. Fast chiral separation of a NSAIDs-related compound can be achieved in less than 60 s.
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Affiliation(s)
- Chiara Fanali
- Department of Medicine, University Campus Bio-Medico of Rome, Rome, Italy.
| | - Salvatore Fanali
- PhD School in Natural Science and Engineering, University of Verona, Verona, Italy
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24
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Tomai P, Martinelli A, Gasperi T, Bianchi M, Purcaro V, Teofili L, Papacci P, Cori MS, Vento G, Curini R, Fanali S, Gentili A. Rotating-disc micro-solid phase extraction of F2-isoprostanes from maternal and cord plasma by using oxidized buckypaper as sorbent membrane. J Chromatogr A 2018; 1586:30-39. [PMID: 30563692 DOI: 10.1016/j.chroma.2018.12.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 12/03/2018] [Accepted: 12/09/2018] [Indexed: 01/08/2023]
Abstract
This paper describes the development of an original micro-solid phase extraction device and its evaluation for the isolation of F2-isoprostanes (F2-IsoPs) from cord and maternal plasma samples. The unit is very simple and consists in a rotating disc (1.8 cm diameter) of oxidized buckypaper (BP), enwrapped in a polypropylene mesh pouch. Even if the selected F2-IsoPs have logP and pKa values that make them suitable candidates for their sorption on BP, several parameters were optimized to maximize recoveries: time of adsorption and desorption; stirring speed; volume, pH and ionic strength of the sample; type, volume, and fractions of the elution solvent; oxidation grade of BP. Among all, the last one was crucial in affecting extraction yields because of the analyte interactions with polar functionalities, introduced by a preliminary oxidative acid treatment. The investigation established the optimal oxidation time and highlighted the pros and cons of the acid activation step. All extracts were analyzed by means of liquid chromatography-tandem mass spectrometry (LC-MS/MS). Validation was performed according to the main FDA guidelines for bioanalytical methods. Depending on the spike level and analyte, recoveries ranged between 30 and 120% with precision and accuracy values lower than 20%. Quantitative analysis was accomplished by matrix-matched calibration curves whose determination coefficients were higher than 0.95. Lower limit of quantitation (LLOQ) spanned the range 2.45-6.77 μg L-1. The validated method was applied to the analysis of eight pairs of mother/child plasma samples, revealing the presence of 8-iso-15-keto-PGF2α and 8-iso-PGE2 at a concentration of about 10 μg L-1 in most cord plasma samples of preterm newborns.
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Affiliation(s)
- Pierpaolo Tomai
- Department of Chemistry, University of Rome "La Sapienza", Piazzale Aldo Moro n°5, P.O. Box 34, Posta 62, 00185, Roma, Italy
| | - Andrea Martinelli
- Department of Chemistry, University of Rome "La Sapienza", Piazzale Aldo Moro n°5, P.O. Box 34, Posta 62, 00185, Roma, Italy
| | - Tecla Gasperi
- Department of Science, Roma Tre University, Via della Vasca Navale 79, 00146, Rome, Italy
| | - Maria Bianchi
- Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica del Sacro Cuore, Italy
| | - Velia Purcaro
- Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica del Sacro Cuore, Italy
| | - Luciana Teofili
- Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica del Sacro Cuore, Italy
| | - Patrizia Papacci
- Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica del Sacro Cuore, Italy
| | - Maria Sofia Cori
- Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica del Sacro Cuore, Italy
| | - Giovanni Vento
- Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica del Sacro Cuore, Italy
| | - Roberta Curini
- Department of Chemistry, University of Rome "La Sapienza", Piazzale Aldo Moro n°5, P.O. Box 34, Posta 62, 00185, Roma, Italy
| | - Salvatore Fanali
- PhD School in Natural Science and Engineering, University of Verona, 37129 Verona, Italy
| | - Alessandra Gentili
- Department of Chemistry, University of Rome "La Sapienza", Piazzale Aldo Moro n°5, P.O. Box 34, Posta 62, 00185, Roma, Italy.
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25
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Chankvetadze B, Fanali S. Thematic virtual special issue on "Enantioseparations-2018. J Chromatogr A 2018; 1580:1. [PMID: 30361034 DOI: 10.1016/j.chroma.2018.10.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Fanali S. Editorial on “Contemporary theory of enantioseparations in capillary electrophoresis” by Bezhan Chankvetadze. J Chromatogr A 2018; 1567:1. [DOI: 10.1016/j.chroma.2018.07.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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27
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Tomai P, Martinelli A, Morosetti S, Curini R, Fanali S, Gentili A. Oxidized Buckypaper for Stir-Disc Solid Phase Extraction: Evaluation of Several Classes of Environmental Pollutants Recovered from Surface Water Samples. Anal Chem 2018; 90:6827-6834. [DOI: 10.1021/acs.analchem.8b00927] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Pierpaolo Tomai
- Department of Chemistry, University of Rome “La Sapienza“, Piazzale Aldo Moro no 5, P.O. Box 34, Posta 62, 00185 Roma, Italy
| | - Andrea Martinelli
- Department of Chemistry, University of Rome “La Sapienza“, Piazzale Aldo Moro no 5, P.O. Box 34, Posta 62, 00185 Roma, Italy
| | - Stefano Morosetti
- Department of Chemistry, University of Rome “La Sapienza“, Piazzale Aldo Moro no 5, P.O. Box 34, Posta 62, 00185 Roma, Italy
| | - Roberta Curini
- Department of Chemistry, University of Rome “La Sapienza“, Piazzale Aldo Moro no 5, P.O. Box 34, Posta 62, 00185 Roma, Italy
| | - Salvatore Fanali
- PhD School in Natural Science and Engineering, University of Verona, 37129 Verona, Italy
| | - Alessandra Gentili
- Department of Chemistry, University of Rome “La Sapienza“, Piazzale Aldo Moro no 5, P.O. Box 34, Posta 62, 00185 Roma, Italy
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D’Orazio G, Fanali C, Karchkhadze M, Chankvetadze B, Fanali S. Enantiomeric separation of some chiral analytes using amylose 3,5-dimethylphenylcarbamate covalently immobilized on silica by nano-liquid chromatography and capillary electrochromatography. J Chromatogr A 2017; 1520:127-134. [DOI: 10.1016/j.chroma.2017.09.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 09/04/2017] [Accepted: 09/06/2017] [Indexed: 10/18/2022]
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30
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Celletti R, Fanali S, Laici CU, Santori C, Pignatelli P, Sinjari B. Instant loading with intraoral welding technique and PRAMA implants: a new prosthetic approach. J BIOL REG HOMEOS AG 2017; 31:1127-1131. [PMID: 29254325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
When splinting multiple implants passive fit of the framework should be achieved to avoid excessive force distribution on the implants. Recently, a protocol was suggested for immediate loading of multiple implants by welding a titanium bar to implant abutments directly in the oral cavity so as to create a customized, precise and passive metal-reinforced provisional restoration. The intraoral welding technique subsequently proves to be a successful option in the full-arch immediate restorations of the mandible and maxilla. The aim of this article is to present a case report in which a new prosthetic approach, using trans-mucosal implants, is described. Dental implants are instantly loaded with a provisional prosthesis supported by an intraoral welded titanium framework to obtain a precise passive fit of the immediate loaded prosthesis.
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Affiliation(s)
- R Celletti
- Department of Medical, Oral and Biotechnological Sciences, University G. dAnnunzio Chieti-Pescara, Chieti, Italy
| | - S Fanali
- Department of Medical, Oral and Biotechnological Sciences, University G. dAnnunzio Chieti-Pescara, Chieti, Italy
| | - C U Laici
- Private Practice Ripe San Ginesio, Italy
| | | | - P Pignatelli
- Department of Medical, Oral and Biotechnological Sciences, University G. dAnnunzio Chieti-Pescara, Chieti, Italy
| | - B Sinjari
- Department of Medical, Oral and Biotechnological Sciences, University G. dAnnunzio Chieti-Pescara, Chieti, Italy
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Pérez-Fernández V, Mainero Rocca L, Tomai P, Fanali S, Gentili A. Recent advancements and future trends in environmental analysis: Sample preparation, liquid chromatography and mass spectrometry. Anal Chim Acta 2017; 983:9-41. [DOI: 10.1016/j.aca.2017.06.029] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 05/30/2017] [Accepted: 06/01/2017] [Indexed: 02/06/2023]
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D'Orazio G, Kakava R, Volonterio A, Fanali S, Chankvetadze B. An attempt for fast separation of enantiomers in nano-liquid chromatography and capillary electrochromatography. Electrophoresis 2017; 38:1932-1938. [DOI: 10.1002/elps.201700126] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 04/04/2017] [Accepted: 04/05/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Giovanni D'Orazio
- Institute of Chemical Methodologies; Italian National Research Council (CNR); Monterotondo Italy
| | - Rusudan Kakava
- Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences; Tbilisi State University; Tbilisi Georgia
| | - Alessandro Volonterio
- Department of Chemistry; Materials and Chemical Engineering “G. Natta” Politecnico di Milano; Milano Italy
- C.N.R. Istituto di Chimica del Riconoscimento Molecolare (ICRM); Milano Italy
| | - Salvatore Fanali
- Institute of Chemical Methodologies; Italian National Research Council (CNR); Monterotondo Italy
| | - Bezhan Chankvetadze
- Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences; Tbilisi State University; Tbilisi Georgia
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Fanali S, Celletti R. Biomechanical considerations on macromorphology of endosseous dental implants. J BIOL REG HOMEOS AG 2017; 31:517-521. [PMID: 28685561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The aim of the present study is to define the optimal thread form and why the macroscopic shape of the dental intra-osseous implant interacts with the biological environment thus conditioning its lifespan and long-term success.
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Affiliation(s)
- S Fanali
- Department of Medical Oral and Biotechnological Sciences, University G. dAnnunzio, Chieti-Pescara, Chieti, Italy
| | - R Celletti
- Department of Medical Oral and Biotechnological Sciences, University G. dAnnunzio, Chieti-Pescara, Chieti, Italy
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34
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Fanali S, Villa T, Lico S, Celletti R. Static and fatigue resistance of two types of implant/abutment connectors. J BIOL REG HOMEOS AG 2017; 31:523-528. [PMID: 28685562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The aim of this study is to determine in an experimental way through mechanical tests the static, fatigue and torque resistance of two types of implant/abutment connectors with diameters of 3.45.2 mm.
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Affiliation(s)
- S Fanali
- University G. dAnnunzio Chieti-Pescara, Department of Medical Oral and Biotechnological Sciences, Chieti, Italy
| | - T Villa
- Politecnico di Milano, Department of Chemistry, Material and Chemical Engineering Giulio Natta Laboratory of Biological Structure Mechanics, Milano, Italy
| | - S Lico
- Private Practice, Rome, Italy
| | - R Celletti
- University G. dAnnunzio Chieti-Pescara, Department of Medical Oral and Biotechnological Sciences, Chieti, Italy
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35
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Fanali S. An overview to nano-scale analytical techniques: Nano-liquid chromatography and capillary electrochromatography. Electrophoresis 2017; 38:1822-1829. [PMID: 28256745 DOI: 10.1002/elps.201600573] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 02/17/2017] [Accepted: 02/21/2017] [Indexed: 01/04/2023]
Abstract
Nano-liquid chromatography (nano-LC) and CEC are microfluidic techniques mainly used for analytical purposes. They have been applied to the separation and analysis of a large number of compounds, e.g., peptides, proteins, drugs, enantiomers, antibiotics, pesticides, nutraceutical, etc. Analytes separation is carried out into capillaries containing selected stationary phase. The mobile phase is moved either by a pump (nano-LC) or by an EOF, respectively. The two tools can offer some advantages over conventional techniques, e.g., high selectivity, separation efficiency, resolution, short analysis time and consumption of low volumes of mobile phase. Flow rates in the range 50-800 nL/min are usually applied. The low flow rate reduces the chromatographic dilution increasing the mass sensitivity. Special attention must be paid in avoiding peak dispersion selecting the appropriate detector, injector and tube connection. Finally due to the low flow rate these microfluidic techniques can be easily coupled with mass spectrometry.
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Affiliation(s)
- Salvatore Fanali
- Institute of Chemical Methodologies, Italian National Research Council, Monterotondo, Italy
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36
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Silva M, Pérez-Quintanilla D, Morante-Zarcero S, Sierra I, Marina ML, Aturki Z, Fanali S. Ordered mesoporous silica functionalized with β-cyclodextrin derivative for stereoisomer separation of flavanones and flavanone glycosides by nano-liquid chromatography and capillary electrochromatography. J Chromatogr A 2017; 1490:166-176. [DOI: 10.1016/j.chroma.2017.02.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 02/06/2017] [Accepted: 02/07/2017] [Indexed: 02/06/2023]
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Fanali S. Nano-liquid chromatography applied to enantiomers separation. J Chromatogr A 2017; 1486:20-34. [DOI: 10.1016/j.chroma.2016.10.028] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 10/01/2016] [Accepted: 10/11/2016] [Indexed: 10/20/2022]
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Dorsey J, Fanali S, Giese R, Haddad P, Lee HK, Poole C, Riekkola ML, Schoenmakers P, Breadmore M, Dugo P, Sun Y. Editors’ Tribute to Professor Hanfa Zou. J Chromatogr A 2017; 1486:1. [DOI: 10.1016/j.chroma.2017.01.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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39
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40
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Aturki Z, Fanali S, Rocco A. Online sample concentration and analysis of drugs of abuse in human urine by micelle to solvent stacking in capillary zone electrophoresis. Electrophoresis 2016; 37:2875-2881. [DOI: 10.1002/elps.201600312] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 08/16/2016] [Accepted: 08/17/2016] [Indexed: 01/19/2023]
Affiliation(s)
- Zeineb Aturki
- Istituto di Metodologie Chimiche; Consiglio Nazionale delle Ricerche; Monterotondo Italy
| | - Salvatore Fanali
- Istituto di Metodologie Chimiche; Consiglio Nazionale delle Ricerche; Monterotondo Italy
| | - Anna Rocco
- Istituto di Metodologie Chimiche; Consiglio Nazionale delle Ricerche; Monterotondo Italy
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42
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Affiliation(s)
- Chiara Fanali
- Centro Integrato di Ricerca; Campus Bio-Medico University; Rome (Italy)
| | - Salvatore Fanali
- Institute of Chemical Methodologies; Italian National Research Council (CNR); Area della Ricerca di Roma I; Via Salaria km. 29.300-00015 Monterotondo, Rome (Italy)
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Mateos-Vivas M, Fanali S, Rodríguez-Gonzalo E, Carabias-Martínez R, Aturki Z. Rapid determination of nucleotides in infant formula by means of nano-liquid chromatography. Electrophoresis 2016; 37:1873-80. [PMID: 26791135 DOI: 10.1002/elps.201500526] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 12/23/2015] [Accepted: 01/11/2016] [Indexed: 01/11/2023]
Abstract
A rapid method for the quantification of five ribonucleotides 5'- monophophates (adenosine, cytidine, guanosine, inosine, uridine, 5'-monophosphate), in infant formula, has been proposed using nano-LC. To separate the studied compounds, capillary columns packed with different C18-based stationary phases were investigated. All the columns tested were laboratory prepared. The experiments were performed in ion-pairing RP chromatographic mode using tetrabutylammonium hydroxide as ion-pairing reagent. The method was developed using a core-shell XB-C18 capillary column with a mobile phase consisting of 5% v/v methanol and 95% v/v 100 mM ammonium formate, pH 8, containing 20 mM tetrabutylammonium hydroxide. All compounds were baseline resolved in less than 5 min with a flow rate of 500 nL/min in isocratic elution mode. Nucleotides were detected at 260 nm. Analytical validation parameters were evaluated. The RSD values for intraday and interday repeatability for retention time and peak area were <2.4 and 4.2%, respectively. The method linearity was good (R(2) < 0.9995) for the studied compounds. LOD and limit of quantitation were 0.25 and 0.50 μg/mL, respectively. The method was applied to the determination of nucleotides in infant formula, subjected to a centrifugal ultrafiltration process, prior their analysis. The amounts found were in agreement to the labeled contents.
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Affiliation(s)
- María Mateos-Vivas
- Istituto di Metodologie Chimiche, Consiglio Nazionale delle Ricerche, Monterotondo, Italy.,Departamento de Química Analítica, Nutrición y Bromatología, Facultad de Ciencias Químicas, University of Salamanca, Salamanca, Spain
| | - Salvatore Fanali
- Istituto di Metodologie Chimiche, Consiglio Nazionale delle Ricerche, Monterotondo, Italy
| | - Encarnacíon Rodríguez-Gonzalo
- Departamento de Química Analítica, Nutrición y Bromatología, Facultad de Ciencias Químicas, University of Salamanca, Salamanca, Spain
| | - Rita Carabias-Martínez
- Departamento de Química Analítica, Nutrición y Bromatología, Facultad de Ciencias Químicas, University of Salamanca, Salamanca, Spain
| | - Zeineb Aturki
- Istituto di Metodologie Chimiche, Consiglio Nazionale delle Ricerche, Monterotondo, Italy
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Fanali S. Editorial on "Evaluation of steroidomics by liquid chromatography hyphenated to mass spectrometry as a powerful analytical strategy for measuring human steroid perturbations" by Fabienne Jeanneret, David Tonoli, Michel F. Rossier, Martial Saugy, Julien Boccard and S. Rudaz. J Chromatogr A 2016; 1430:96. [PMID: 26627585 DOI: 10.1016/j.chroma.2015.11.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Salvatore Fanali
- Institute of Chemical Methodologies, Italian National Research Council (C.N.R.), Via Salaria km 29, 300-00015 Monterotondo (Rome), Italy.
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D'Orazio G, Hernández-Borges J, Asensio-Ramos M, Rodríguez-Delgado MÁ, Fanali S. Capillary electrochromatography and nano-liquid chromatography coupled to nano-electrospray ionization interface for the separation and identification of estrogenic compounds. Electrophoresis 2015; 37:356-62. [DOI: 10.1002/elps.201500327] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 09/27/2015] [Accepted: 10/05/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Giovanni D'Orazio
- Instituto di Metodologie Chimiche; Consiglio Nazionale delle Ricerche (C.N.R.); Monterotondo Roma Italia
- Departamento de Química, Unidad Departamental de Química Analítica, Facultad de Ciencias; Universidad de La Laguna (ULL); La Laguna Tenerife España
| | - Javier Hernández-Borges
- Departamento de Química, Unidad Departamental de Química Analítica, Facultad de Ciencias; Universidad de La Laguna (ULL); La Laguna Tenerife España
| | - María Asensio-Ramos
- Instituto Volcanológico de Canarias (INVOLCAN); Parque Taoro Puerto de la Cruz Tenerife España
| | - Miguel Ángel Rodríguez-Delgado
- Departamento de Química, Unidad Departamental de Química Analítica, Facultad de Ciencias; Universidad de La Laguna (ULL); La Laguna Tenerife España
| | - Salvatore Fanali
- Instituto di Metodologie Chimiche; Consiglio Nazionale delle Ricerche (C.N.R.); Monterotondo Roma Italia
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Hernández-Mesa M, D'Orazio G, Rocco A, García-Campaña AM, Blanco CC, Fanali S. Capillary electrochromatography-mass spectrometry for the determination of 5-nitroimidazole antibiotics in urine samples. Electrophoresis 2015. [PMID: 26200811 DOI: 10.1002/elps.201500126] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The separation of eight antibiotics belonging to 5-nitroimidazole family was carried out by means of CEC coupled with MS. Preliminary experiments were carried out with ultraviolet detection in order to select the proper stationary and mobile phase. Among the different stationary phases studied (namely Lichrospher C18, 5 μm particle size; Cogent(TM) Bidentate C18, 4.2 μm; Pinnacle II™ Phenyl, 3 μm; Pinnacle II™ Cyano, 3 μm), Cogent™ Bidentate C18 (4.2 μm) gave the best performance. For CEC-MS coupling, a laboratory assembled liquid-junction-nano-spray interface was used. In order to achieve a good sensitivity, special attention was paid to both optimization of the sheath liquid composition as well as selection of the injection mode. Under optimized CEC-ESI-MS conditions, the separation was accomplished within 22 min by using a column packed with a mixture of Bidentate C18:Lichrospher Silica-60 (5 μm) 3:1 w/w, an inlet pressure of 11 bar, a voltage of 15 kV, and a mobile phase composed by 45:10:45 v/v/v ACN/MeOH/water containing ammonium acetate (5 mM pH 5). A combined hydrodynamic and electrokinetic injection of 8 bar, 15 kV, and 96 s was adopted. The method was validated in terms of repeatability and intermediate precision of retention times and peak areas, linearity, and LODs and LOQs. RSDs values were <2.9% for retention times and <16.1% for peak areas in both intraday and interday experiments. LOQ values were between 0.09 and 0.42 μg/mL for all compounds. Finally, the method was applied to the determination of three most employed 5-nitroimidazole antibiotics (metronidazole, secnidazole, and ternidazole) in spiked urine samples, subjected to a SPE procedure. Recovery values in the 67-103% range were obtained. Furthermore, for the selected antibiotics, CEC-MS(2) spectra were obtained providing the unambiguous confirmation of these drugs in urine samples.
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Affiliation(s)
- Maykel Hernández-Mesa
- Istituto di Metodologie Chimiche, Consiglio Nazionale delle Ricerche, Monterotondo, Italy.,Department of Analytical Chemistry, Faculty of Sciences, University of Granada, Granada, Spain
| | - Giovanni D'Orazio
- Istituto di Metodologie Chimiche, Consiglio Nazionale delle Ricerche, Monterotondo, Italy
| | - Anna Rocco
- Istituto di Metodologie Chimiche, Consiglio Nazionale delle Ricerche, Monterotondo, Italy
| | - Ana M García-Campaña
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, Granada, Spain
| | - Carmen Cruces Blanco
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, Granada, Spain
| | - Salvatore Fanali
- Istituto di Metodologie Chimiche, Consiglio Nazionale delle Ricerche, Monterotondo, Italy
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49
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Rocchi S, Fanali C, Fanali S. Use of a Novel Sub-2 µm Silica Hydride Vancomycin Stationary Phase in Nano-Liquid Chromatography. II. Separation of Derivatized Amino Acid Enantiomers. Chirality 2015; 27:767-72. [DOI: 10.1002/chir.22495] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 07/03/2015] [Accepted: 07/19/2015] [Indexed: 01/04/2023]
Affiliation(s)
- Silvia Rocchi
- Institute of Chemical Methodologies; Italian National Research Council (C.N.R.); Rome Italy
- Department of Physical and Chemical Sciences; University of L'Aquila; L'Aquila Italy
| | - Chiara Fanali
- Centro Integrato di Ricerca; Campus Bio-Medico University; Monterotondo Italy
| | - Salvatore Fanali
- Institute of Chemical Methodologies; Italian National Research Council (C.N.R.); Rome Italy
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Fanali S. Editorial on "Current approaches and challenges for the metabolite profiling of complex natural extracts" by Jean-Luc Wolfender, Guillaume Marti, Aurélien Thomas and Samuel Bertrand. J Chromatogr A 2015; 1382:135. [PMID: 25465368 DOI: 10.1016/j.chroma.2014.11.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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