Mass-spectrometric study of the formation of silver nanoclusters in polyethers: I. Laser desorption/ionization

Kosevich, M. V.; Chagovets, Vitalij V.; Severinovskaya, O. V.; Boryak, Oleg A.; Zobnina, V. G.; Shelkovsky, Vadim S.; Orlov, V. V.; Pokrovskiy, V. A.

doi:10.1134/s1061934812130060

Cited by 3 publications

(2 citation statements)

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“…(b), silver ions, aggregated silver ions and silver oxides are observed. This mass spectrum is in a good agreement with a previous study using laser desorption/ionization mass spectrometry . For organic compounds, the high laser power desorption mode will result in complex mass spectra which are difficult to interpret.…”

Section: Resultssupporting

confidence: 89%

“…This mass spectrum is in a good agreement with a previous study using laser desorption/ionization mass spectrometry. [32] For organic compounds, the high laser power desorption mode will result in complex mass spectra which are difficult to interpret. However, for inorganic compounds, the signals from elements are very helpful.…”

Section: Detection Of Inorganic Compoundsmentioning

confidence: 99%

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Laser desorption lamp ionization source for ion trap mass spectrometry

Zare

2015

J. Mass Spectrom.

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A two-step laser desorption lamp ionization source coupled to an ion trap mass spectrometer (LDLI-ITMS) has been constructed and characterized. The pulsed infrared (IR) output of an Nd:YAG laser (1064 nm) is directed to a target inside a chamber evacuated to ~15 Pa causing desorption of molecules from the target's surface. The desorbed molecules are ionized by a vacuum ultraviolet (VUV) lamp (filled with xenon, major wavelength at 148 nm). The resulting ions are stored and detected in a three-dimensional quadrupole ion trap modified from a Finnigan Mat LCQ mass spectrometer operated at a pressure of ≥ 0.004 Pa. The limit of detection for desorbed coronene molecules is 1.5 pmol, which is about two orders of magnitude more sensitive than laser desorption laser ionization mass spectrometry using a fluorine excimer laser (157 nm) as the ionization source. The mass spectrum of four standard aromatic compounds (pyrene, coronene, rubrene and 1,4,8,11,15,18,22,25-octabutoxy-29H,31H-phthalocyanine (OPC)) shows that parent ions dominate. By increasing the infrared laser power, this instrument is capable of detecting inorganic compounds.

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Section: Resultssupporting

confidence: 89%

Section: Detection Of Inorganic Compoundsmentioning

confidence: 99%