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  • Title: [Polar neutral organic compounds (POCN) in city aerosols. 3. Comparative studies of emission and immission particles in West Berlin].
    Author: Moriske HJ, Rüden H.
    Journal: Zentralbl Bakteriol Mikrobiol Hyg B Umwelthyg Krankenhaushyg Arbeitshyg Prav Med; 1988 Jan; 185(4-5):452-68. PubMed ID: 2453980.
    Abstract:
    After the concentration of the polar organic compounds (= POCN), especially from the neutral fraction, was investigated in urban suspended particulates over a longtime period in Berlin (West) (March 1983-January 1984 at three emission measurement stations loaded by different sources) and some emissions were taken during 1985 from vehicle diesel-engines and private coal firing (domestic fuel) a comparison between all these measurements are given now. The following results were gained: The amount of the ether-extractable organic matter (= EEOM) was higher for the emission samples (less than or equal to 80% of the total suspended particulate matter = TPM) than for the emission measurements (less than or equal to 40% of the TPM). Most of the EEOM was found for particle sizes less than or equal to 1.5-2 micron aerodynamic diameter. Making further separation of the EEOM, then the neutral fraction (= NF) showed the highest percentage of about 60-90% (of the EEOM) for emission measurements and of 60-80% for emission measurements. The values of the acidic fraction (= AF) were with 5-30% (emissions) and 10-25% (emissions). Quite the same results were found for the basic fraction (= BF) with 1-20% (emissions) and 5-20% (emissions). Of the neutral fraction, further separation was done into aliphatic compounds (= AIP), polycyclic aromatic hydrocarbons (= PAH) and polar neutral organic compounds (= POCN). From these compounds, the aliphatics amounted to 30-40% (of the NF) for the vehicle emission measurements and to only 10-20% for the coal firing emissions. The percentages of the PAH and POCN varied and were quite similar with 10-50% (PAH) and 25-50% (POCN). For the emission measurements, the PAH amounted to lower values (5-30%) and the POCN to (30-60%). Some differences between the measurements were found in the gas chromatographic analysis of single PAH and POCN compounds. Then, for the vehicle samples (diesel engines and highway traffic tunnel) higher concentrations were found for perylene and coronene (of the PAH) and for mainly 1-nitropyrene (of the POCN) in comparison with coal firing emissions. There, we found higher concentrations for phenanthrene, benzo(a)pyrene and dibenz(a,h) anthracene (of the PAH) and for 9-fluorenone (of the POCN). The concentration of the nitro-groups containing substances (included in the POCN-fraction) amounted here generally to higher values in comparison with the vehicle emissions (except of 1-nitropyrene).(ABSTRACT TRUNCATED AT 400 WORDS)
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