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  • Graphitized carbon black  (1)
  • Industrial emission  (1)
  • Low and high resolution liquid chromatography  (1)
  • 1
    Electronic Resource
    Electronic Resource
    An experimental method for testing the solvophobic theory by using graphitized carbon black in GC and LC (1982)
    Springer
    Chromatographia 16 (1982), S. 330-335 
    Details
    ISSN: 1612-1112
    Keywords: Liquid Chromatography ; Solvophobic theory ; Solvent effect ; Graphitized carbon black
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The net solvent effect for several solute-solvent pairs has been calculated by using the solvophobic approach for describing the liquid chromatographic process. For the same solutes and solvents the net solvent effect has been experimentally measured by using graphitized carbon black columns in GC and HPLC. A comparison between the measured and calculated values made in terms of normalized free energy changes, indicates that the solvophobic theory is fairly adequate for predicting the sequence of solvent strength and provides a comprehensive explanation of the various interactions occurring in reversed-phase LC. Aγ critical discussion of the deviations of the theory from the experimental data is also presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02258932
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Determination of nitrated-polyaromatic hydrocarbons (nitro-PAHs) in environmental samples by high resolution chromatographic techniques (1984)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 7 (1984), S. 389-397 
    Details
    ISSN: 0935-6304
    Keywords: Low and high resolution liquid chromatography ; Gas chromatography ; Capillary columns ; Alkali flame detection ; Chemical ionization mass spectrometry ; Nitro-PAHs ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: An analytical procedure is described for the fractionation of organic compounds present in environmental samples and the determination of nitro polyaromatic hydrocarbons (nitro-PAHs). Both low and high resolution liquid chromatography are employed for the prefractionation of the soluble organic fraction (SOF) extracted from particulate matter or gaseous pollutants collected on adsorption traps. High resolution gas chromatography is used to analyze four fractions containing alkanes, PAHs, nitro-PAHs, and other polar PAHs. Nitrogen-containing species are separated by GC and detected specifically using an alkali flame (NPD) detector. Flame ionization (FID) detection, GC-MS of positive ions, and negative ion chemical ionization MS of the whole fraction is used for the identification and quantitation of the various components. The composition of SOF extracted from particulate matter emitted from diesel exhausts is elucidated and a large number of nitro-PAHs identified by the combination of the various techniques.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240070709
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Short capillary column for the separation and identification of mononitrofluoranthene and mononitropyrene isomers present in air and emission samples (1988)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 11 (1988), S. 306-312 
    Details
    ISSN: 0935-6304
    Keywords: Capillary GC ; Nitrofluoranthenes ; Nitropyrenes ; Diesel exhaust ; Urban particulate matter ; Industrial emission ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A 15 m DB-17 fused-silica capillary column has been used to achieve the separation of all mononitrofluorarthene and mononitropyrene isomers. Linear Retention Indices and Relative Retention times for each component have been measured and the values were compared with those observed on DB-5 columns, commonly used for this separation. Increased polarity of the liquid phase results in better separation of some key isomeric pairs (such as 2-, 3-nitrofluoranthene and 1-nitropyrene, 8-nitrofluoranthene), difficult to resolve on DB-5 columns. Practical applications are reported. They include the analysis of extracts from emission samples (diesel exhaust and particles emitted by a factory manufacturing carbon electrodes) as well as atmospheric dust sampled in a urban area under different conditions.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240110402
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    Paper (German National Licenses)
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