Lithium ion attachment mass spectrometry: Instrumentation and features

Abstract

Articles you may be interested inTransportable real-time single-particle ion trap mass spectrometer Rev. Sci. Instrum. 76, 064102 (2005); 10.1063/1.1938607 Corona discharge ion mobility spectrometry at reduced pressures Rev. Sci. Instrum. 75, 4656 (2004); 10.1063/1.1809301 Ion preparation systems for atomic isobar reduction in accelerator mass spectrometry AIP Conf. Development of an electrostatic ion guide in chemical ionization mass spectrometry Rev. Sci. Instrum. 69, 4002 (1998); 10.1063/1.1149223Fourier transform ion cyclotron resonance mass spectrometry AIP Conf.The design and construction of a lithium ion attachment mass spectrometer that is used to study the occurrence of free radical intermediates and molecular and atomic species ͑which are not found under ordinary conditions͒ on a real-time basis in the gas phase are described. The newly developed device exhibits several advantages over conventional mass spectrometers. The performance of this equipment was extensively tested and optimized, and experimental tests show that the efficiency and sensitivity of the instrument are moderately high. The main applications and possible future perspectives of this approach are briefly reviewed.

Development of lithium attachment mass spectrometry – knudsen effusion and chemical ionisation mass spectrometry (KEMS, CIMS)

“…Fujii et al, 4 Selvin and Fujii, 6 Nakamura et al, 7 and Edwards et al, 8 have made β-eucryptite from heating a crushed mix of Al 2 O 3 : SiO 2 : Li 2 O in a 1 : 1 : 1 molar ratio. In this work filaments were using Al 2 O 3 : SiO 2 : Li 2 O and Al 2 O 3 : SiO 2 : Li 2 CO 3 , both with 1 : 1 : 1 molar ratios.…”

“…Fujii and Ohta 5 investigated several lithium bearing materials (Li 2 O, Li 2 SiO 3 , Li 3 PO 4 , zeolite A and β-eucryptite) as potential sources for lithium ion production. β-eucryptite was shown to provide the highest emission current densities (2 × 10 −6 A cm −2 ) and is the material used by Fujii et al, 4 Selvin and Fujii, 6 Nakamura et al, 7 and Edwards et al 8 Presented here are initial results from the testing and construction of lithium-ion attachment sources for two different mass spectrometers. First, a Chemical Ionization Mass Spectrometer (CIMS) used for making trace gas phase measurements will be modified.…”

Development of a tabletop time‐of‐flight mass spectrometer with an ion attachment ionization technique

“…The IA ion source was developed based on that adapted to QMS systems by Fujii et al 4, 5. We used lithium (Li) as the alkali metal since the lithium ion has the highest affinity energy among the alkali metal ions.…”

Mass spectrometric investigation of high-mass neutral species in the downstream region of Ar/CH4 plasmas

“…There are two methods for attaching Li þ with the neutral species: one is carried out under a relatively high-pressure (typically 100 Pa) condition to thermalize the kinetic Li þ emitted from a Li þ source and stabilize the Li þ adducts by three-body collisions, 34 and another is carried out under a relatively low-pressure (a few Pa or less) condition. 35 The latter method significantly reduces the probability of adduct formation due to the lack of three-body collisions, but allows for measurements under such a low pressure.…”