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  • 1
    Electronic Resource
    Electronic Resource
    On ionisation induced unimolecular dissociation of sodium clusters (1987)
    Springer
    The European physical journal 5 (1987), S. 359-365 
    Details
    ISSN: 1434-6079
    Keywords: 35.20.Gs ; 35.20.Vf ; 36.40.+d
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Fragmentation of sodium cluster ions (Na x + ,x〈42) was studied via photoionisation of neutral precursors. Expansions of metal vapor out of cylindrical and conical nozzles yielded supersonic beams with differing cluster compositions. Measurements of photoionisation efficiency curves in the 3–6 eV range for both types of expansion allow quantitative separation of direct ionisation and unimolecular dissociation contributions to specific ion signals. Data for Na 8 + and Na 7 + are analysed to yield lower limits on bond energies. Results obtained for larger clusters are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01385467
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Adsorptionspolarisierte Elektroden zur Endpunktsindikation bei der potentiometrischen Titration (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 281 (1976), S. 215-219 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Arsen(III), Zinn(II) ; Potentiometrische Titration ; adsorptionspolarisierte Elektroden
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Möglichkeit der analytischen Verwendung adsorptionspolarisierter Elektroden (APE) bei Redoxtitrationen wird untersucht. Beispiele für die erfolgreiche Anwendung werden gezeigt. Notwendig zur Ausbildung eines scharfen Peaks im Titrationsendpunkt ist die Ausbildung einer spezifischen Adsorptionsschicht der zu bestimmenden Ionen. Störungen durch Adsorptionsverdrängung, Katalysator- und Fremdioneneinflüsse sowie irreversible Adsorption werden an Beispielen besprochen.
    Notes: Abstract The application of Adsorption-Polarised Electrodes (APE) to redox titrations is investigated. Examples for successful use are presented. The formation of a specific adsorbed layer of ions to be determined is necessary to indicate the endpoint by a sharp peak. Examples will be discussed, where the titration is interfered by adsorption displacement, influences of catalysators and other ions or irreversible adsorption.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00440476
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    Paper (German National Licenses)
    Fulltext
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