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  • 1
    Electronic Resource
    Electronic Resource
    Liquid chromatography separation of organic acidic compounds (1980)
    Springer
    Chromatographia 13 (1980), S. 18-23 
    Details
    ISSN: 1612-1112
    Keywords: Sulphonic acids ; Aromatic carboxylic acids ; Phenols ; Reversed-phase — ion-pair
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The influence of ionic compounds added to an aqueous methanol eluent on the retention behaviour of sulphonic, carboxylic acids and of phenols is demonstrated. Absolute and relative retentions can be optimized by changing the water-methanol concentrations. The optimum conditions for the separation of technical important sulphonic and carboxylic acids (dye intermediates) are shown.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02302711
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Reaction detector with three dimensional coiled open tubes in HPLC (1982)
    Springer
    Chromatographia 15 (1982), S. 403-408 
    Details
    ISSN: 1612-1112
    Keywords: Liquid chromatography ; Reaction detector ; Colorimetric detection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary A reaction detector with non-segmented flow in open tubes as reaction track is described. To minimize peak broadening the open tubes are arranged in a three dimensional coiled structure by knitting. At low volume flow rates the h-values in these open tubes are independent of flow rate and are significantly lower than predicted by theory. The applicability of this reactor for classical colorimetric detection with corrosive reagents is shown.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02261598
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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