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Volume 32 (1984)
- Issue 5 Pages 365-
- Issue 4 Pages 319-
- Issue 3 Pages 277-
- Issue 2 Pages 221-
- Issue 1 Pages 3-
Volume 32, Issue 3
Displaying 1-4 of 4 articles from this issue
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REGULAR PAPERS
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Yoshinori Uwamino, Toshio Ishizuka, Akira Tsuge, Hideo Yamatera1984 Volume 32 Issue 3 Pages 277-283
Published: 1984
Released on J-STAGE: May 01, 2007
JOURNAL FREE ACCESSRare earth elements in the fluoride were determined by secondary ion mass spectrometry. The determination was done using the peaks due to doubly charged ions without spectral interference. Lanthanum in the sample was employed as an internal standard. The detection limits for the elements ranged from 0.0039 to 0.056 wt%. Lanthanum in synthetic and xenotime samples was determined by the standard addition method, and other elements in the samples were determined from the concentration of lanthanum and the relative ion intensities of the elements to lanthanum. For most elements of more than 1 wt%, the analytical results were in agreement with the theoretical values and with the results obtained by inductively coupled plasma-atomic emission spectrometry.View full abstractDownload PDF (405K) -
Tokuo Mizuno, Koushi Azuma, Yoshihiro Kammei1984 Volume 32 Issue 3 Pages 285-296
Published: 1984
Released on J-STAGE: May 01, 2007
JOURNAL FREE ACCESSThe design of a direct coupling LC/MS interface is described.
A device newly developed is a precisely handcrafted orifice with a pinhole of about 10 μm in diameter. It makes the nebulization of LC effluent successful, introducing mists into the ionization chamber as a stable jet. The solvent vapour of the effluent is utilized as the reagent gas for chemical ionization.
The excellent stability and reproducibility of the nebulized effluent jet were attained and the ionization used here was found to be a soft one. The performance of the device was evaluated in the applicability to thermally labile and non-volatile compounds such as prostaglandins and oligopeptides without any derivatization.View full abstractDownload PDF (636K) -
Hisao Nakata, Kikuko Iwata, Tomiko Kondo, Hideo Yoshizumi, Akira Tatem ...1984 Volume 32 Issue 3 Pages 297-303
Published: 1984
Released on J-STAGE: May 01, 2007
JOURNAL FREE ACCESSElectron ionization mass spectra of substituted benzyl acetates [1] - [12] are measured. In general, the spectrum consists of four peaks: M+, [M-42]+, [M-59]+, and m/z 43 peak. A good Bursey-McLafferty correlation between log ([m/z 43]/[M]) and Hammett σ constants is found. The Einolf-Munson treatment of m/z 43 and [M-42] ions also gives an expected result. On the other hand, compounds [5] and [7] deviate considerably from the plott of log ([M-42]/[M]) vs. σ, and the Chin-Harrison analysis is applied to explain this discrepancy.View full abstractDownload PDF (413K) -
Kimio Isa, Kenji Sasaki, Keiko Mizuta1984 Volume 32 Issue 3 Pages 305-313
Published: 1984
Released on J-STAGE: May 01, 2007
JOURNAL FREE ACCESSMass spectra of various phthalocyanines (metal free, iron, cobalt, nickel, copper, zinc, platinum, di-chloro germanium and di-hydride geranium) were measured by electron impact ionization mass spectrometry (EI-MS). When the mass spectra of the mixture of the phthalocyanines and K2PtCl6 were measured, the hydrogen atoms of the phthalocyanine ring were substituted by chlorines and one or two chlorines were added to the metal. The number of chlorine atoms reacted with the phthalocyanines are shown in the parenthesis below and their order is:
H2(3) < Ni(9) < Pt(11) < Co(16), Cu(16) < Fe(17), Zn(17) < Ge(18).
In the case of Ge(pc)H2, the ion (Ge(pc)H2 + H)+ was observed both by EI and FD techniques.View full abstractDownload PDF (543K)
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