Journal of High Resolution ChromatographyVolume 6, Issue 11 p. 631-632 Short Communication Open-tubular dynamically modified silica coulums in liqid chromatography T. Takeuchi, Corresponding Author T. Takeuchi Department of Applied Chemistry, Faculty of Engineering, Nagoya University, Chikusa-ku, Nagoya-shi, 464 JapanDepartment of Applied Chemistry, Faculty of Engineering, Nagoya University, Chikusa-ku, Nagoya-shi, 464 JapanSearch for more papers by this authorD. Ishii, D. Ishii Department of Applied Chemistry, Faculty of Engineering, Nagoya University, Chikusa-ku, Nagoya-shi, 464 JapanSearch for more papers by this author T. Takeuchi, Corresponding Author T. Takeuchi Department of Applied Chemistry, Faculty of Engineering, Nagoya University, Chikusa-ku, Nagoya-shi, 464 JapanDepartment of Applied Chemistry, Faculty of Engineering, Nagoya University, Chikusa-ku, Nagoya-shi, 464 JapanSearch for more papers by this authorD. Ishii, D. Ishii Department of Applied Chemistry, Faculty of Engineering, Nagoya University, Chikusa-ku, Nagoya-shi, 464 JapanSearch for more papers by this author First published: November 1983 https://doi.org/10.1002/jhrc.1240061113Citations: 2AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat No abstract is available for this article. References 1 J. H. Knox and G. R. Laird, J. Chromatogr. 122 (1976) 17. 10.1016/S0021-9673(00)82234-7 CASWeb of Science®Google Scholar 2 Y. Ghaemi and R. A. Wall, J. Chromatogr. 174 (1979) 51. 10.1016/S0021-9673(00)87036-3 CASWeb of Science®Google Scholar 3 R. A. Wall, J. Chromatogr. 194 (1980) 353. 10.1016/S0021-9673(00)81426-0 CASWeb of Science®Google Scholar 4 Y. Ghaemi and R. A. Wall, J. Chromatogr. 198 (1980) 397. 10.1016/S0021-9673(00)80508-7 CASWeb of Science®Google Scholar 5 S. H. Hansen, J. Chromatogr. 209 (1981) 203. 10.1016/S0021-9673(00)81584-8 CASWeb of Science®Google Scholar 6 S. H. Hansen, P. Helboe, and M. Thomsen, J. Chromatogr. 210 (1981) 453. 10.1016/S0021-9673(00)80337-4 CASWeb of Science®Google Scholar 7 S. H. Hansen, P. Helboe, and U. Lund, J. Chromatogr. 240 (1982) 319. 10.1016/S0021-9673(00)99611-0 CASWeb of Science®Google Scholar 8 P. Helboe, J. Chromatogr. 245 (1982) 229. 10.1016/S0021-9673(00)88592-1 PubMedWeb of Science®Google Scholar Citing Literature Volume6, Issue11November 1983Pages 631-632 ReferencesRelatedInformation

Journal of High Resolution ChromatographyVolume 5, Issue 2 p. 91-92 Original Research Paper Direct coupling of an ultra-micro high-performance liquid chromatograph and a mass spectrometer T. Takeuchi, Corresponding Author T. Takeuchi Department of Applied Chemistry, Faculty of Engineering, Nagoya University, Chikusa-ku, Nagoya-shi, 464 JapanDepartment of Applied Chemistry, Faculty of Engineering, Nagoya University, Chikusa-ku, Nagoya-shi, 464 JapanSearch for more papers by this authorD. Ishii, D. Ishii Department of Applied Chemistry, Faculty of Engineering, Nagoya University, Chikusa-ku, Nagoya-shi, 464 JapanSearch for more papers by this authorA. Saito, A. Saito Biodynamics Research Institute, Mizuho-ku, Nagoya-shi, 467 JapanSearch for more papers by this authorT. Ohki, T. Ohki Biodynamics Research Institute, Mizuho-ku, Nagoya-shi, 467 JapanSearch for more papers by this author T. Takeuchi, Corresponding Author T. Takeuchi Department of Applied Chemistry, Faculty of Engineering, Nagoya University, Chikusa-ku, Nagoya-shi, 464 JapanDepartment of Applied Chemistry, Faculty of Engineering, Nagoya University, Chikusa-ku, Nagoya-shi, 464 JapanSearch for more papers by this authorD. Ishii, D. Ishii Department of Applied Chemistry, Faculty of Engineering, Nagoya University, Chikusa-ku, Nagoya-shi, 464 JapanSearch for more papers by this authorA. Saito, A. Saito Biodynamics Research Institute, Mizuho-ku, Nagoya-shi, 467 JapanSearch for more papers by this authorT. Ohki, T. Ohki Biodynamics Research Institute, Mizuho-ku, Nagoya-shi, 467 JapanSearch for more papers by this author First published: February 1982 https://doi.org/10.1002/jhrc.1240050206Citations: 13AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL No abstract is available for this article. References 1 P. R. Jones and S. K. Yang, Anal. Chem. 47 (1975) 1000. 2 W. H. McFadden, H. L. Schwartz, and E. Evans, J. Chromatogr. 122 (1976) 389. 3 F. W. McLafferty, R. Knutti, R. Venkataraghhavan, P. J. Arpino, and B. G. Dawkins, Anal. Chem. 47 (1975) 1503. 4 C. R. Blakley, M. J. McAdams, and M. L. Vestal, J. Chromatogr. 158 (1978) 261. 5 D. I. Carroll, I. Dzidic, R. N. Stillwell, K. D. Haegele, and E. C. Horning, Anal. Chem. 47 (1975) 2369. 6 T. Takeuchi, Y. Hirata, and Y. Okuyama, Anal. Chem. 50 (1978) 659. 7 S. Tsuge, Y. Hirata, and T. Takeuchi, Anal. Chem. 51 (1979) 166. 8 J. D. Henion and G. A. Maylin, Biomed. Mass Spectrom. 7 (1980) 115. 9 J. D. Henion, J. Chromatogr. Sci. 19 (1981) 57. 10 K. H. Schäfer and K. Levsen, J. Chromatogr. 206 (1981) 245. 11 D. Ishii, K. Asai, K. Hibi, T. Jonokuchi, and M. Nagaya, J. Chromatogr. 144 (1977) 157. 12 T. Takeuchi and D. Ishii, J. Chromatogr. 190 (1980) 150. 13 T. Takeuchi and D. Ishii, J. Chromatogr. 218 (1981) 199. Citing Literature Volume5, Issue2February 1982Pages 91-92 ReferencesRelatedInformation

Article A Kinetic Study of the Catalytic Hydrogenation of Ethylene over Nickel Powders by a Tritium-Tracer Technique was published on February 1, 1982 in the journal Zeitschrift für Physikalische Chemie (volume 131, issue 2).

An improved vacuum nebulizing interface with a very short counter nozzle was developed for direct coupling of a micro-LC and a quadrupole MS with CI-chamber. With the LC-MS system using the nebulizing interface, it became possible to take mass fragmentograms for various less volatile compounds such as glutamic acid, steroids, aromatic amines and chlorine-containing insecticides.

A directly coupled micro-liquid chromatograph and mass spectrometer (MS) was developed using a modified vacuum nebulizing interface and a small double focusing MS.

AbstractA new vacuum atomizing sample introduction device was developed and applied to take stable and reproducible chemical ionization mass spectra of various involatile compounds. As examples, chemical ionization spectra of some free amino acids, drug components in a cold medicine, higher phthalates, oligomers of styrene and ethyleneglycol, etc., are presented.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVacuum nebulizing interface for direct coupling of micro-liquid chromatograph and mass spectrometerShin. Tsuge, Yukio. Hirata, and Tsugio. TakeuchiCite this: Anal. Chem. 1979, 51, 1, 166–169Publication Date (Print):January 1, 1979Publication History Published online1 May 2002Published inissue 1 January 1979https://pubs.acs.org/doi/10.1021/ac50037a049https://doi.org/10.1021/ac50037a049research-articleACS PublicationsRequest reuse permissionsArticle Views43Altmetric-Citations51LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts

Atomic Faraday spectroscopy or atomic magneto-optical rotation spectroscopy (AMORS) combined with the electrothermal atomization was applied to the trace determination of elements (Cd, Ag and Cu). A simple theoretical treatment was developed for the dependence of the radiation transmitted through the Faraday configuration on the magnetic field strength. The effect of the hyperfine structure on the Zeeman splitting was related to the line-crossing between the Zeeman components and the dependence of the transmitted intensity on the magnetic field strength. The calibration graphs demonstrated a square-law dependence. The spectroscopic signal increased non-rectilinearly as the source radiance increased. Detection limits of 5 × 10−13, 2 × 10−11 and 3 × 10−11 g were obtained for Cd, Ag and Cu, respectively.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPyrolysis Gas Chromatographic Characterization of Highly Alternating Copolymers Containing Styrene and Tetracyanoquinodimethan, Methyl Acrylate, Acrylonitrile, or Methyl Methacrylate UnitsShin Tsuge, Tsuneo Kobayashi, Yoshihiro Sugimura, Tamio Nagaya, and Tsugio TakeuchiCite this: Macromolecules 1979, 12, 5, 988–992Publication Date (Print):September 1, 1979Publication History Published online1 May 2002Published inissue 1 September 1979https://pubs.acs.org/doi/10.1021/ma60071a041https://doi.org/10.1021/ma60071a041research-articleACS PublicationsRequest reuse permissionsArticle Views110Altmetric-Citations22LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts

By considering the effect of neighbouring monomer units in depropagating polymer chain radicals on the formation of degradation products, a new boundary effect theory was developed in order to elucidate the sequence distributions in vinyl-type copolymers using the corresponding monomer yields. This theory was applied succesfully to the calculation of the sequence distributions in methyl methacrylate—styrene copolymers in terms of the run numbers. The significance of newly introduced parameters (monomer formation probability constants) is also discussed.

AbstractCoisotactic shift contributions caused by sterically crowded isotactic side‐chain alkyl groups are proposed for peak assignments of isotactic propylene/butene‐1 copolymers. Previously disputed analyses of methine triads and PB tetrads of backbone methylene carbons (α,α′‐CH2) have been verified using first‐order Markovian distribution theory. Coisotactic shift contributions also account for the reverse order of the propylene‐centered triads from that predicted by the Grant‐Paul equation.

A four-line method is described for correction of inter-element effects caused by variations of excitation temperatures and the degree of ionization in a plasma. Four lines with different upper-level energies in the atomic-ionic system are compared. The total number of atoms and ions is used as the response instead of the spectral intensity. Plasma torch symmetry is one of the most important factors for successful corrections. The correction method is demonstrated for the determination of manganese in a capacitively coupled plasma torch, where strontium interferes strongly.

AbstractCarbon‐13 chemical shifts of a number of alkyl and aromatic sulphonic acids in sulphuric acids in sulphuric acid and strongly basic deuterium oxide have been compared. The titration shifts are relatively small for carbons near the sulphonyl group, but are comparable with those of other organic acids or bases for carbons remote from the deprotonation sites.

Zinc, manganese and chromium chelates of 8-hydroxyquinoline have been found to dissolve in hexamethylphosphoric triamide easily. Ca. 3% solutions of zinc complexes of 8-hydroxyquinoline and its 5-sulphonic acid derivative give well resolved 1H NMR spectra. The results are useful not only for interpretation of intricate spectra of 8-hydroxyquinolines but also for determination of structures and relative stabilities of chelation compounds.

Graphite electrodes heated by d.c- power alone, or a combination of d.c- and r.f. power, are investigated for generating atomic emission from cadmium with specially designed discharge lamps. Best results are achieved if the plasma produced by both power sources can be concentrated within a cylindrical electrode.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDetermination of alkylbenzenesulfonates and alkylsulfates as anionic surfactants by carbon-13 nuclear magnetic resonance spectrometryYoshio. Kosugi, Yu. Yoshida, and Tsugio. TakeuchiCite this: Anal. Chem. 1979, 51, 7, 951–953Publication Date (Print):June 1, 1979Publication History Published online1 May 2002Published inissue 1 June 1979https://doi.org/10.1021/ac50043a039RIGHTS & PERMISSIONSArticle Views100Altmetric-Citations7LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (264 KB) Get e-Alerts Get e-Alerts

Abstract Carbon-13 NMR spectra of benzoic, and phthalic acids were compared both in D2O with an excess of sodium hydroxide and in a mixture of DMSO-d6 and H2O (4:1). Tight ion pair forms of benzoate anion were considered. A simple additive rule for isomeric phthalic acids was employed to assign the spectral peaks. These carboxylic acids gave characteristic peaks and so can be distinguished from others in mixtures. Quantitative analyses of these carboxylic acids with calibration curves are also possible by a simple preparation of basic D2O solutions. An example of the use of these data is the Henkel process (cf. Fig. 1) for the synthesis of terephthalic acid.