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  • Cu-Elektrode zur Endpunktsindikation  (1)
  • HF-Zusatz  (1)
  • Matter waves and collective properties of cold atoms and molecules  (1)
  • Spektralphotometrie, Atomabsorption  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 296 (1979), S. 149-151 
    ISSN: 1618-2650
    Keywords: Best. von Oxalat ; Fällungstitration/Elektroden, ionenselektive ; Cu-Elektrode zur Endpunktsindikation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary It is demonstrated that oxalate can be titrated at pH 6–8 by employing lead(II) as titrant and a cupric ISE as end-point detector in the presence of traces of cupric ions. The response of the ISE to oxalate and E/pH plots have been examined. The method has been tested for the range of 0.8–40 mM oxalate. Recovery was found generally to be better than 98% and relative standard deviation was 0.4% at the 4 mM level. Interferences from carbonate, phosphate and arsenate can in part be overcome by adjusting the pH to 6.0±0.2.
    Notes: Zusammenfassung Es wird gezeigt, daß Oxalat bei pH 6–8 mit Blei(II)-Lösung in Gegenwart von Kupferionen titriert werden kann, wobei eine Kupfer-ionenselektive Elektrode zur Endpunktsindikation dient. Das Verfahren wurde im Bereich 0,8–40 mM Oxalat getestet und die Anzeigeempfindlichkeit untersucht. Die Wiederfmdensrate ist besser als 98%; die relative Standardabweichung beträgt 0,4% bei 4 mM Oxalat. Durch Einstellung des pH-Wertes auf 6,0±0,2 können Störungen durch Carbonat, Phosphat und Arsenat z.T. eliminiert werden.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 299 (1979), S. 261-263 
    ISSN: 1618-2650
    Keywords: Best. von Kupfer in Zirkoniumsalzen ; Spektralphotometrie, Atomabsorption ; HF-Zusatz
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary An AAS method is described for the direct determination of traces of copper in zirconium(IV) oxide chloride and nitrate. An interference study of the zirconium matrix is reported. Best conditions for the removal of the suppressive effect of zirconium on the copper signal by addition of hydrofluoric acid are described. Results obtained by analyzing commercial samples from different manufacturers are presented.
    Notes: Zusammenfassung Kupferverunreinigungen wurden in Zirkoniumoxidchlorid und -nitrat bestimmt. Störungen durch die Matrix wurden untersucht. Die abschwächende Wirkung des Zr auf das Cu-Signal wurde durch Zusatz von Fluorwasserstoffsäure beseitigt. Analysenergebnisse für verschiedene handelsübliche Zr-Salze werden mitgeteilt.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 2014-10-08
    Description: Author(s): Cristian Degli Esposti Boschi, Elisa Ercolessi, Loris Ferrari, Piero Naldesi, Fabio Ortolani, and Luca Taddia The expansion dynamics of bosonic gases in optical lattices has recently been the focus of increasing attention, both experimental and theoretical. We consider, by means of numerical Bethe ansatz, the expansion dynamics of initially confined wave packets of two interacting bosons on a lattice. We sh... [Phys. Rev. A 90, 043606] Published Tue Oct 07, 2014
    Keywords: Matter waves and collective properties of cold atoms and molecules
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
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