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  • 1
    Electronic Resource
    Electronic Resource
    On the efficiency of capillary columns coated with medium polarity thick films (1985)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 8 (1985), S. 551-557 
    Details
    ISSN: 0935-6304
    Keywords: Gas chromatography, GC ; Fused silica capillary columns ; Thick films ; Polyphenylmethylsiloxane films ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The efficiency of FSOT columns coated with thick films of polyphenylmethylsiloxane was theoretically and experimentally compared to thin apolar and medium polar coatings and to thick apolar coatings. Experimental hū and TZū plots clearly demonstrate the enormous loss in chromatographic efficiency of thick films of medium polar siloxane stationary phases. The low diffusion coefficient in the liquid phaese is responsible for this behavior. The influence of the temperature and the nature of the solute on the efficiency was also studied.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240080915
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  • 2
    Electronic Resource
    Electronic Resource
    OH-terminated cyanopropyl silicones (1988)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 11 (1988), S. 256-263 
    Details
    ISSN: 0935-6304
    Keywords: Gas chromatography ; Fused silica capillary columns ; Cyanopropyl stationary phases ; OH-terminal groups ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Due to their high polarity and unique selectivity, cyanopropyl silicones are basic stationary phases for high resolution capillary gas chromatography. Different OH-terminated cyanopropyl silicones, containing a high cyanopropyl content, were synthesized and chromatographically evaluated. Special attention was paid to the degree of immobilization of the phases in FSOT columns. Depending on the problem at hand, a choice has to be made between immobilization and maximum selectivity.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240110308
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