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Determination of organic compounds in airborne particulate matter by gas chromatography-mass spectrometry
Abstract Airborne particulate matter from a residential town area was sampled by filtration through glass fiber filters. The benzene extractable compounds were subjected to a separation into neutral, acidic and basic substances. The acidic fraction was converted to the methylated derivatives before analysis. The partly evaporated residues were analyzed qualitatively by gas chromatography-mass spectrometry with computerized data acquisition. The generation of mass chromatograms for specific ion fragment masses permitted the location of mass spectra. Interpretation and comparison with reference data led to the identification of more than 100 compounds. In the neutral fraction, saturated aliphatic hydrocarbons, polynuclear aromatic hydrocarbons and polar oxygenated substances were identified. The acidic fraction consisted mainly of a homologue series of fatty acids and aromatic carboxylic acids some of them with hydroxysubstitution. The basic fraction consisted of the nitrogen containing analogues of the important polyaromatic hydrocarbons present in the neutral fraction. Estimates of the range of concentrations of various substances were made by the addition of standard amounts of a reference compound and the integration of the mass spectrometer output; some of the concentrations could not be determined very accurately because of the incomplete retention of the more volatile compounds during sampling.
Determination of organic compounds in airborne particulate matter by gas chromatography-mass spectrometry
Abstract Airborne particulate matter from a residential town area was sampled by filtration through glass fiber filters. The benzene extractable compounds were subjected to a separation into neutral, acidic and basic substances. The acidic fraction was converted to the methylated derivatives before analysis. The partly evaporated residues were analyzed qualitatively by gas chromatography-mass spectrometry with computerized data acquisition. The generation of mass chromatograms for specific ion fragment masses permitted the location of mass spectra. Interpretation and comparison with reference data led to the identification of more than 100 compounds. In the neutral fraction, saturated aliphatic hydrocarbons, polynuclear aromatic hydrocarbons and polar oxygenated substances were identified. The acidic fraction consisted mainly of a homologue series of fatty acids and aromatic carboxylic acids some of them with hydroxysubstitution. The basic fraction consisted of the nitrogen containing analogues of the important polyaromatic hydrocarbons present in the neutral fraction. Estimates of the range of concentrations of various substances were made by the addition of standard amounts of a reference compound and the integration of the mass spectrometer output; some of the concentrations could not be determined very accurately because of the incomplete retention of the more volatile compounds during sampling.
Determination of organic compounds in airborne particulate matter by gas chromatography-mass spectrometry
Cautreels, W. (author) / Van Cauwenberghe, K. (author)
Atmospheric Environment ; 10 ; 447-457
1975-10-22
11 pages
Article (Journal)
Electronic Resource
English
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