2017
Clusters of Monoisotopic Elements for Calibration in (TOF) Mass Spectrometry
KOLÁŘOVÁ, Lenka; Lubomír PROKEŠ; Lukáš KUČERA; Aleš HAMPL; Eladia Maria PEŇA MENDÉZ et al.Základní údaje
Originální název
Clusters of Monoisotopic Elements for Calibration in (TOF) Mass Spectrometry
Autoři
KOLÁŘOVÁ, Lenka; Lubomír PROKEŠ; Lukáš KUČERA; Aleš HAMPL; Eladia Maria PEŇA MENDÉZ; Petr VAŇHARA a Josef HAVEL
Vydání
Journal of The American Society for Mass Spectrometry, New York, Springer, 2017, 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: 2.869
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/17:00096268
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
Monoisotopic elements; Calibration; Gold clusters; Phosphorus clusters; TOF mass spectrometry
Změněno: 30. 3. 2018 08:54, Ing. Nicole Zrilić
Anotace
V originále
Precise calibration in TOF MS requires suitable and reliable standards, which are not always available for high masses. We evaluated inorganic clusters of the monoisotopic elements gold and phosphorus (Aun+/Aun- and Pn+/Pn-) as an alternative to peptides or proteins for the external and internal calibration of mass spectra in various experimental and instrumental scenarios. Monoisotopic gold or phosphorus clusters can be easily generated in situ from suitable precursors by laser desorption/ionization (LDI) or matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS). Their use offers numerous advantages, including simplicity of preparation, biological inertness, and exact mass determination even at lower mass resolution. We used citrate-stabilized gold nanoparticles to generate gold calibration clusters, and red phosphorus powder to generate phosphorus clusters. Both elements can be added to samples to perform internal calibration up to mass-to-charge (m/z) 10–15,000 without significantly interfering with the analyte. We demonstrated the use of the gold and phosphorous clusters in the MS analysis of complex biological samples, including microbial standards and total extracts of mouse embryonic fibroblasts. We believe that clusters of monoisotopic elements could be used as generally applicable calibrants for complex biological samples.
Návaznosti
| EE2.3.20.0185, projekt VaV |
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| MUNI/A/1352/2015, interní kód MU |
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