巻号一覧
51 巻 (2003)
- 6 号 p. 563-
- 5 号 p. 492-
- 4 号 p. 439-
- 3 号 p. 391-
- 2 号 p. 349-
- 1 号 p. 36-
51 巻, 6 号
選択された号の論文の3件中1～3を表示しています
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報文
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Yoko KAWAI, Satoru YAMAGUCHI, Yoshiki OKADA, Kazuo TAKEUCHI2003 年 51 巻 6 号 p. 563-565
発行日: 2003年
公開日: 2007/10/16
ジャーナル フリーAn electron impact (EI) ion source was developed for cluster ion generation. Ammonia was used as a model gas to optimize various conditions of the EI source for cluster ion generation. Electrons emitted from tungsten filaments were accelerated through slits into the region where a nozzle for supersonic expansion was placed. We examined the effects on cluster intensities of the slits' length, distance d between the head of the nozzle and ionization point, and aperture size of the nozzle. It was found that the longer slits 15 mm could provide greater cluster ion intensities than the shorter ones 5 mm. The distance d was confirmed to be critical on the cluster intensities. The larger aperture ϕ50 μm was found to be favorable for cluster generation than the smaller one, ϕ30 μm, and the effect of d was attenuated with the larger aperture.抄録全体を表示PDF形式でダウンロード (135K)
ノート
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Koichi METORI, Yumiko KIMURA, Muneharu MIYAKE2003 年 51 巻 6 号 p. 566-569
発行日: 2003年
公開日: 2007/10/16
ジャーナル フリーBy 1H NMR spectrometry it is impossible to confirm the association constant (Ks) of the host-guest complex which peaks of guest become broad and overlapped by host peaks. In order to solve the obstacles and raise the usefulness of FAB mass spectrometry in host-guest chemistry, we examined whether FAB mass spectrometry would be a suitable measurement tool for Ks value of the host-guest complex. As the result, the Ks value calculated by FAB mass spectrometry was mostly in agreement with the Ks value calculated by 1H NMR spectrometry. It was concluded that FAB mass spectrometry is available for the determination of Ks value.抄録全体を表示PDF形式でダウンロード (158K)
総合論文
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田島 進2003 年 51 巻 6 号 p. 570-591
発行日: 2003年
公開日: 2007/10/16
ジャーナル フリーIt is summarized that the fragmentation and structure of several organic ions, including organosilicon and organofluorine ions, have been investigated by using ion kinetic energy (IKE) spectrometry, mass-analyzed ion kinetic energy (MIKE) spectrometry, D-labeling technique and thermochemistry. Further, several new methods, such as collision energy-dependent collision-induced dissociation (CID) spectra are described.抄録全体を表示PDF形式でダウンロード (1579K)
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