Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Izumi Waki"'
Autor:
Takashi Baba, Izumi Waki, Hiroyuki Satake, Masuyuki Sugiyama, Yuichiro Hashimoto, Hideki Hasegawa
Publikováno v:
Journal of the Mass Spectrometry Society of Japan. 55:339-342
We performed collision-induced dissociation (CID) and electron capture dissociation (ECD) analyses using a new ion trap: an axially resonant excitation linear ion trap (AREX LIT). Unlike a conventional linear ion trap, the AREX LIT can trap and detec
Publikováno v:
Journal of the American Society for Mass Spectrometry. 17:685-690
We describe a new mass selective ejection method from a linear ion trap, which we call axial resonant excitation (AREX). A set of vane lenses are inserted between each quadrupole rod to produce electrostatic potential that is approximately harmonic a
Publikováno v:
International Journal of Mass Spectrometry. 244:65-71
We report a continuous monitoring system of polychlorinated biphenyls (PCBs) in air, which uses direct sampling atmospheric pressure chemical ionization (APCI)/ion trap mass spectrometry (ITMS). In APCI, humidity in the atmosphere, which fluctuates f
Publikováno v:
Rapid Communications in Mass Spectrometry. 19:1485-1491
A new hybrid mass spectrometer based on dual linear ion traps (LITs) and an orthogonal acceleration time-of-flight mass spectrometer (oaTOF), that can achieve MSn analysis and high-mass-accuracy detection with high sensitivity, has been developed. Du
Publikováno v:
Analytical Chemistry. 76:4263-4266
We report on the first evidence of electron capture dissociation (ECD) in a radio frequency (rf) ion trap. Peptide ions, [substance P]2+, trapped in a two-dimensional, linear rf ion trap were cleaved by electrons injected along the central axis of th
Publikováno v:
Chemosphere. 54:1475-1480
The decrease of trichlorophenol by injecting oxidation catalyst into a municipal solid waste incinerator was monitored in real time. Direct sampling atmospheric pressure chemical ionization (APCI)/ion trap mass spectrometry (ITMS) was used for the re
Publikováno v:
Analytical Chemistry. 75:420-425
We propose and demonstrate a new method for multiple-stage mass spectrometry (MSn), collision-activated infrared multiphoton dissociation (CA-IRMPD), which is very effective for the quadrupole ion trap mass spectrometer (QITMS). CA-IRMPD uses a combi
Autor:
Izumi Waki, Takashi Baba
Publikováno v:
Journal of Applied Physics. 92:4109-4116
We formulated a model to reproduce the spectral shape of in situ mass spectra of sympathetically cooled molecular ions trapped in a linear radio-frequency-quadrupole. The molecular ions are sympathetically cooled by laser cooled ions. The mass spectr
Autor:
Takashi Baba, Izumi Waki
Publikováno v:
Applied Physics B: Lasers and Optics. 74:375-382
We theoretically investigated the mass dependence of the sympathetic cooling rate of gas-phase ions trapped in a linear radio-frequency-quadrupole ion trap. Using an a priori molecular dynamical calculation, tracing numerically with Newtonian equatio
Autor:
Izumi Waki, Takashi Baba
Publikováno v:
The Journal of Chemical Physics. 116:1858-1861
We report an ion/neutral reaction of sympathetically laser-cooled molecular ions. Using laser-cooled fluorescence mass spectrometry, a reaction of about 100 sympathetically cooled H3O+ ions with NH3 were traced at 4 min interval as the reacting ions