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@article{2379498,
author = {Koktavá, Monika and Prysiazhnyi, Vadym and Preisler, Jan and Bednařík, Antonín},
article_location = {New York},
article_number = {2},
doi = {http://dx.doi.org/10.1021/jasms.3c00370},
keywords = {mass spectrometry; volatile organic compounds; laser ionization; gas phase reactions},
language = {eng},
issn = {1044-0305},
journal = {Journal of the American Society for Mass Spectrometry},
title = {Comparison of Cu+, Ag+, and Au+ Ions as Ionization Agents of Volatile Organic Compounds at Subatmospheric Pressure},
url = {https://doi.org/10.1021/jasms.3c00370},
volume = {35},
year = {2024}
}
TY - JOUR
ID - 2379498
AU - Koktavá, Monika - Prysiazhnyi, Vadym - Preisler, Jan - Bednařík, Antonín
PY - 2024
TI - Comparison of Cu+, Ag+, and Au+ Ions as Ionization Agents of Volatile Organic Compounds at Subatmospheric Pressure
JF - Journal of the American Society for Mass Spectrometry
VL - 35
IS - 2
SP - 307-316
EP - 307-316
PB - Springer
SN - 10440305
KW - mass spectrometry
KW - volatile organic compounds
KW - laser ionization
KW - gas phase reactions
UR - https://doi.org/10.1021/jasms.3c00370
N2 - 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+.
ER -
KOKTAVÁ, Monika, Vadym PRYSIAZHNYI, Jan PREISLER a Antonín BEDNAŘÍK. Comparison of Cu+, Ag+, and Au+ Ions as Ionization Agents of Volatile Organic Compounds at Subatmospheric Pressure. \textit{Journal of the American Society for Mass Spectrometry}. New York: Springer, 2024, roč.~35, č.~2, s.~307-316. ISSN~1044-0305. Dostupné z: https://dx.doi.org/10.1021/jasms.3c00370.
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