巻号一覧
32 巻 (1984)
- 5 号 p. 365-
- 4 号 p. 319-
- 3 号 p. 277-
- 2 号 p. 221-
- 1 号 p. 3-
32 巻, 3 号
選択された号の論文の4件中1～4を表示しています
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報文
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上蓑 義則, 石塚 紀夫, 柘植 明, 山寺 秀雄1984 年32 巻3 号 p. 277-283
発行日: 1984年
公開日: 2007/05/01
ジャーナル フリーRare 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.抄録全体を表示PDF形式でダウンロード (405K) -
水野 悳夫, 東 光土, 貫名 義裕1984 年32 巻3 号 p. 285-296
発行日: 1984年
公開日: 2007/05/01
ジャーナル フリーThe 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.抄録全体を表示PDF形式でダウンロード (636K) -
Hisao Nakata, Kikuko Iwata, Tomiko Kondo, Hideo Yoshizumi, Akira Tatem ...1984 年32 巻3 号 p. 297-303
発行日: 1984年
公開日: 2007/05/01
ジャーナル フリーElectron 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.抄録全体を表示PDF形式でダウンロード (413K) -
伊佐 公男, 笹木 健次, 水田 啓子1984 年32 巻3 号 p. 305-313
発行日: 1984年
公開日: 2007/05/01
ジャーナル フリーMass 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.抄録全体を表示PDF形式でダウンロード (543K)
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