2024
Comparison of Cu+, Ag+, and Au+ Ions as Ionization Agents of Volatile Organic Compounds at Subatmospheric Pressure
KOKTAVÁ, Monika, Vadym PRYSIAZHNYI, Jan PREISLER a Antonín BEDNAŘÍKZákladní údaje
Originální název
Comparison of Cu+, Ag+, and Au+ Ions as Ionization Agents of Volatile Organic Compounds at Subatmospheric Pressure
Autoři
KOKTAVÁ, Monika (203 Česká republika, domácí), Vadym PRYSIAZHNYI (804 Ukrajina, domácí), Jan PREISLER (203 Česká republika, garant, domácí) a Antonín BEDNAŘÍK (203 Česká republika, domácí)
Vydání
Journal of the American Society for Mass Spectrometry, New York, Springer, 2024, 1044-0305
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10406 Analytical chemistry
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 3.200 v roce 2022
Organizační jednotka
Přírodovědecká fakulta
UT WoS
001158849900001
Klíčová slova anglicky
mass spectrometry; volatile organic compounds; laser ionization; gas phase reactions
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 5. 11. 2024 15:46, Mgr. Pavla Foltynová, Ph.D.
Anotace
V originále
Ionization of volatile organic compounds (VOCs) by coinage metal ions (Cu+, Ag+, and Au+) generated by laser desorption and ionization (LDI) of a metal nanolayer in subatmospheric conditions is explored. The study was performed in a commercial subatmospheric dual MALDI/ESI ion source. Five compounds representing different VOC classes were chosen for a detailed study of the metal ionization mechanism: ethanol, acetone, acetic acid, xylene, and cyclohexane. In the gas phase, ion molecular complexes of all three metal ions were formed, typically with two ligand molecules. The successful detection of the metal complexes with VOCs strongly depended on the applied voltages across the ion source, minimizing the in-source fragmentation. The employed orbital trap with ultrahigh resolving power and sub-parts-per-million mass accuracy allowed unambiguous identification of the formed complexes based on their molecular formulas. The detection limits of the studied compounds in the gas were in the range 0.1-1.4 nmol/L. Compared to Cu+ and Ag+ ions, Au+ ions exhibited the highest reactivity, often complicating spectra by side products of reactions. On the other hand, they also allowed detecting saturated hydrocarbons, which did not produce any signals with Ag+ and Cu+.
Návaznosti
GA21-12262S, projekt VaV |
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MUNI/A/1594/2023, interní kód MU |
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