Atmospheric Pressure Thermal Ionization Ion Source for Peptide Analysis
Evgenii KukaevEmanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, Russian FederationА. С. КононихинEmanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, Russian FederationNatalia StarodubtsevaInstitute for Energy Problems of Chemical Physics, Russian Academy of Sciences, 119334 Moscow, Russian FederationYury KostyukevichInstitute for Energy Problems of Chemical Physics, Russian Academy of Sciences, 119334 Moscow, Russian FederationIgor A. PopovInstitute for Energy Problems of Chemical Physics, Russian Academy of Sciences, 119334 Moscow, Russian FederationVitaliy ChagovetsV.I. Kulakov Research Center for Obstetrics, Gynecology and Perinatology, Ministry of Healthcare of the Russian Federation, Moscow, RussiaKonstantin O. NagornovInstitute for Energy Problems of Chemical Physics, Russian Academy of Sciences, 119334 Moscow, Russian FederationYury PopovЕ. Н. НиколаевInstitute for Energy Problems of Chemical Physics, Russian Academy of Sciences, 119334 Moscow, Russian Federation
2016en
ABI
Аннотация
A novel atmospheric pressure thermal ionization (APTI) ion source was developed for the analysis of liquid samples. The feasibility of the ion source was demonstrated on peptides using two configurations-assisted by hot wire or hot surface. Microalloyed molybdenum, used as a thermal ion- emitter, notably facilitated the formation of multiply-charged ions, but fragmentation products were still observed. Peptide fragmentation accompanying thermal ionization can be used for peptide identification. The described method is promising for studies of biological samples with minimal pre-treatment.
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