J 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.

Basic information

Original name

Clusters of Monoisotopic Elements for Calibration in (TOF) Mass Spectrometry

Authors

KOLÁŘOVÁ, Lenka (203 Czech Republic, belonging to the institution), Lubomír PROKEŠ (203 Czech Republic, belonging to the institution), Lukáš KUČERA (203 Czech Republic, belonging to the institution), Aleš HAMPL (203 Czech Republic, belonging to the institution), Eladia Maria PEŇA MENDÉZ (724 Spain), Petr VAŇHARA (203 Czech Republic, belonging to the institution) and Josef HAVEL (203 Czech Republic, belonging to the institution)

Edition

Journal of The American Society for Mass Spectrometry, New York, Springer, 2017, 1044-0305

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10406 Analytical chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 2.869

RIV identification code

RIV/00216224:14310/17:00096268

Organization unit

Faculty of Science

UT WoS

000398111400003

Keywords in English

Monoisotopic elements; Calibration; Gold clusters; Phosphorus clusters; TOF mass spectrometry

Tags

Změněno: 30/3/2018 08:54, Ing. Nicole Zrilić

Abstract

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.

Links

EE2.3.20.0185, research and development project
Name: Centrum analýz a modelování tkání a orgánů
MUNI/A/1352/2015, interní kód MU
Name: Zdroje pro tkáňové inženýrství 6 (Acronym: TissueENG 6)
Investor: Masaryk University, Category A