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  • Articles  (2)
  • Atomic, Molecular and Optical Physics  (1)
  • Chloride, nitrate and sulphate  (1)
  • 1980-1984  (2)
  • 1982  (2)
  • Chemistry and Pharmacology  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Calculation of periodic molecular systems with perturbed periodicity within the PCILO framework. I. Method (1982)
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 21 (1982), S. 711-716 
    Details
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A method within the PCILO framework for the study of periodic molecular systems involving impurities is described regarding a one-dimensional chain. The calculation of the whole system is reduced to the calculation of subsystem pairs only. By use of the first-neighbor approximation only one or two subsystem pairs must be considered for subsystems with identical or differing surroundings, respectively. The procedure described yields the ground state energies and charge distributions of the subsystems.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/qua.560210405
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  • 2
    Electronic Resource
    Electronic Resource
    High-speed analysis for acid-rain anions by Single-Column Ion Chromatography (SCIC) (1982)
    Springer
    Chromatographia 16 (1982), S. 312-316 
    Details
    ISSN: 1612-1112
    Keywords: Ion chromatography ; Single column operation ; Conductivity detection ; Acid rain ; Chloride, nitrate and sulphate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Single Column Ion Chromatography (SCIC) combines ion exchange separation with direct electrical conductivity detection. Because no “supressor column” is used in SCIC the post-column dead volume is minimized. This means that “HPLC” technology can be applied to reduce analysis times. The analysis of chloride, nitrate, and sulphate can be accomplished in 6 min using a standard 250×4.6 mm LC column packed with a low-capacity ion-exchange chemically bonded silica leading to a sensitivity of 100 ppb. A 1 min analysis for chloride, nitrate, and sulphate at the ppm level is possible using a 30×4.6 mm column eluted with 4mM phthalate buffer at pH 4.5.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02258928
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    Paper (German National Licenses)
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