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Garcia A, Serra C, Remaury QB, Garcia AD, Righezza M, Meinert C, Poinot P, Danger G. Gas chromatography coupled-to Fourier transform orbitrap mass spectrometer for enantioselective amino acid analyses: Application to pre-cometary organic analog. J Chromatogr A 2023; 1704:464118. [PMID: 37315448 DOI: 10.1016/j.chroma.2023.464118] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/17/2023] [Accepted: 05/31/2023] [Indexed: 06/16/2023]
Abstract
Gas chromatography (GC) is a separation technique commonly developed for targeted in situ analyses in planetary space missions. It is coupled with low-resolution mass spectrometry to obtain additional structural information and allow compound identification. However, ground-based analyses of extraterrestrial samples have shown the presence of large molecular diversities. For future targeted in situ analyses, it is therefore essential to develop new technologies. High resolution mass spectrometry (HRMS) is currently being spatialized using FT-orbitrap-MS technology. In this contribution, the coupling of gas chromatography with FT-orbitrap-MS is studied for targeted amino acid analyses. The method for enantioselective separation of amino acids was optimized on a standard mixture comprising 47 amino acid enantiomers. Different ionization modes were optimized, chemical ionization with three different reactive gasses (NH3, CH4 and NH3/CH4) and electron impact ionization at different electron energies. Single ion and full scan monitoring modes were compared, and detection and quantification limits were estimated by internal calibration under the optimized conditions. The GC-FT-orbitrap-MS demonstrated its ability to separate 47 amino acid enantiomers with minimal co-elution. Furthermore, due to the high mass resolution and accuracy of FT-orbitrap-MS, with mass extraction, the S/N is close to zero, allowing average LOD values of 10⁻7 M, orders of magnitude lower than conventional GC-MS techniques. Finally, these conditions were tested for enantioselective analysis of amino acids on an analog of a pre-cometary organic material showing similarities to that of extraterrestrial materials.
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Affiliation(s)
- A Garcia
- Aix-Marseille Université, CNRS, Institut Origines, Laboratoire PIIM, Marseille, France
| | - C Serra
- Aix-Marseille Université, CNRS, Institut Origines, Laboratoire PIIM, Marseille, France; UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), E.BiCoM Team, University of Poitiers, 4 rue Michel-Brunet, TSA 51106, 86073, Poitiers, Cedex 9, France
| | - Q Blancart Remaury
- UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), E.BiCoM Team, University of Poitiers, 4 rue Michel-Brunet, TSA 51106, 86073, Poitiers, Cedex 9, France
| | - A D Garcia
- Université Côte d'Azur, Institut de Chimie de Nice, UMR 7272 CNRS, F-06108 Nice, France
| | - M Righezza
- Aix-Marseille Université, CNRS, Institut Origines, Laboratoire PIIM, Marseille, France
| | - C Meinert
- Université Côte d'Azur, Institut de Chimie de Nice, UMR 7272 CNRS, F-06108 Nice, France
| | - P Poinot
- UMR CNRS 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), E.BiCoM Team, University of Poitiers, 4 rue Michel-Brunet, TSA 51106, 86073, Poitiers, Cedex 9, France
| | - G Danger
- Aix-Marseille Université, CNRS, Institut Origines, Laboratoire PIIM, Marseille, France; Institut Universitaire de France (IUF), France.
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Affiliation(s)
- S. Ounnar
- a Institut de Chimie Organique et Analytique, CNRS UPRES-A 6005, Université d’Orléans , B. P. 6759, Orléans , Cedex 2 , 45067 , France
| | - M. Righezza
- b Institut de Chimie Organique et Analytique, CNRS UPRES-A 6005, Université d’Orléans , B. P. 6759, Orléans , Cedex 2 , 45067 , France
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Ounnar S, Righezza M, Chrétien JR. Quantitative Structure Retention Relationships of Chloro-N-benzylideneanilines in Normal Phase Liquid Chromatography. J LIQ CHROMATOGR R T 2006. [DOI: 10.1080/10826079808001233] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- S. Ounnar
- a Institut de Chimie Organique et Analytique Université d'Orléans , B.P. 6759 45067, Orléans Cedex, 2, France
| | - M. Righezza
- a Institut de Chimie Organique et Analytique Université d'Orléans , B.P. 6759 45067, Orléans Cedex, 2, France
| | - J. R. Chrétien
- b Laboratoire de Chimiométrie Université d'Orléans , B.P. 6759 45067, Orléans Cedex, 2, France
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Affiliation(s)
- S. Ounnar
- a Institut de Chimie Organique et Analyhque , Universite d'Orleans , B.P. 6759 Cedex 2, Orleans, 45067, France
| | - M. Righezza
- a Institut de Chimie Organique et Analyhque , Universite d'Orleans , B.P. 6759 Cedex 2, Orleans, 45067, France
| | - J. R. Chrétien
- b Laboratoire de Chimiomdtrie , Universite d'Orleans , B.P. 6759 Cedex 2, Orleans, 45067, France
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Righezza M, Murello MH, Siouffi AM. Determination of nitrosamines by liquid chromatography with post-column photolysis and electrochemical detection. J Chromatogr A 1987; 410:145-55. [PMID: 3429545 DOI: 10.1016/s0021-9673(00)90042-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The liquid chromatographic detection of nitrosamines at the ppb (10(9)) and sub-ppb levels is still a difficult problem. A significant improvement was achieved when a nitrosamine eluted from the column was photolysed by a UV lamp, the charged nitrite species being detected amperometrically. N-Nitrosodimethylamine (NDMA) was selected as a model solute to test the applicability of the detection device. The calibration graphs were linear over a wide concentration range. Optimal detection depended on the nature of the buffer used and the UV spectrum of the nitrosamine to be detected. An interesting application of the detection of a high-molecular-weight nitrosamine is given as an example.
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Affiliation(s)
- M Righezza
- Laboratoire de Chimie Appliquée et Génie Chimique, Université Aix-Marseille III, France
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