Comparison of mass spectra characteristics using statistical analysis methods for the case of ionisation of organic molecules by electron impact with different electron energies
| Dublin Core | PKP Metadata Items | Metadata for this Document | |
| 1. | Title | Title of document | Comparison of mass spectra characteristics using statistical analysis methods for the case of ionisation of organic molecules by electron impact with different electron energies |
| 2. | Creator | Author's name, affiliation, country | S. V. Silkin; Moscow Institute of Physics and Technology; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | A. V. Sakharov; Moscow Institute of Physics and Technology; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | S. I. Pekov; Skolkovo Institute of Science and Technology; Siberian State Medical University; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | V. A. Eliferov; Moscow Institute of Physics and Technology; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | V. G. Tkachenko; Moscow Institute of Physics and Technology; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | D. V. Kolesnik; Moscow Institute of Physics and Technology; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | E. N. Nikolaev; Skolkovo Institute of Science and Technology; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | I. A. Popov; Moscow Institute of Physics and Technology; Siberian State Medical University; Russian Federation |
| 3. | Subject | Discipline(s) | |
| 3. | Subject | Keyword(s) | mass spectrometry; electron impact; ionisation; fragmentation; molecular ion |
| 4. | Description | Abstract | The sensitivity and accuracy of volatile organic compound (VOC) identification can be enhanced through the manipulation of ionisation energy in electron impact ionisation mass spectrometric gas analysers. This is achieved by modulating the number of ions formed in the ion source. This paper presents a comparison of data obtained by electron impact ionisation at electron energy (EE) values in the range of 25–105 eV for a number of organic substances belonging to different classes of organic compounds. In order to interpret the dynamics of changes in the peak intensities of fragment ions, an analysis was conducted using similarity matrices based on different similarity metrics. This analysis demonstrated the influence of electron energy (EE) on the probability of formation of the main fragment particles of the studied substances, and consequently, on the similarity of the recorded mass spectrum with the reference mass spectrum from the database. |
| 5. | Publisher | Organizing agency, location | The Russian Academy of Sciences |
| 6. | Contributor | Sponsor(s) |
Ministry of Education and Science of the Russian Federation (075-03-2023-106) |
| 7. | Date | (DD-MM-YYYY) | 18.12.2024 |
| 8. | Type | Status & genre | Peer-reviewed Article |
| 8. | Type | Type | Research Article |
| 9. | Format | File format | |
| 10. | Identifier | Uniform Resource Identifier | https://clinpractice.ru/0023-1193/article/view/681214 |
| 10. | Identifier | Digital Object Identifier (DOI) | 10.31857/S0023119324060071 |
| 10. | Identifier | eLIBRARY Document Number (EDN) | THOJOH |
| 11. | Source | Title; vol., no. (year) | Himiâ vysokih ènergij; Vol 58, No 6 (2024) |
| 12. | Language | English=en | ru |
| 13. | Relation | Supp. Files |
1. Mass spectra of isopropanol obtained by electron impact ionization. (a) at 70 eV in comparison with the spectrum from the NIST database; (b) at 25 eV in comparison with the spectrum obtained at 70 eV; (c) at 105 eV in comparison with the spectrum obtained at 70 eV. (224KB) Fig. 2. THF mass spectra obtained by electron impact ionization (a) at 70 eV in comparison with the spectrum from the NIST database; (b) at 25 eV in comparison with the spectrum obtained at 70 eV; (c) at 45 eV in comparison with the spectrum obtained at 70 eV; (d) at 105 eV in comparison with the spectrum obtained at 70 eV. (238KB) Fig. 3. Mass spectra of ethyl acetate obtained by electron impact ionization (a) at 70 eV in comparison with the spectrum from the NIST database; (b) at 90 eV in comparison with the spectrum obtained at 70 eV. (136KB) 4. Ionization efficiency curves for the main fragmentary ions (a) n-hexane, (b) 2,2,4-trimethylpentane. (154KB) 5. Ionization efficiency curves for the main fragmentary ions (a) ethylformate, (b) butyl acetate. (145KB) Fig. 6a. The matrix (647KB) Fig. 7. Matrix of cosine measures (502KB) |
| 14. | Coverage | Geo-spatial location, chronological period, research sample (gender, age, etc.) | |
| 15. | Rights | Copyright and permissions |
Copyright (c) 2024 Russian Academy of Sciences |