CHARACTERIZATION OF POLAR POLYCYCLIC AROMATIC COMPOUNDS IN A HEAVY-DUTY DIESEL EXHAUST PARTICULATE BY CAPILLARY COLUMN GAS CHROMATOGRAPHY AND HIGH-RESOLUTION MASS SPECTROMETRY

Polar normal-phase HPLC fractions of a heavy-duty diesel exhaust particulate, a National Bureau of Standards standard reference material 1650, were analyzed by capillary column GC coupled to both low- and high-resolution mass spectrometry (HRMS) using electron impact and negative ion chemical ionization (NICI). Over 80 polycyclic aromatic compounds (PAC), belonging to many different chemical classes (anhydrides, carbox-aldehydes, diazaarenes, cyclic imides, nitrohydroxy-PAC, nitroaza-PAC, nitrodiaza-PAC, nitrolactones, and quinones) were tentatively identified. Ten of them were positively identified by comparison of retention times with authentic standards. Among them, phenazine and phthalic anhydride were positively identified for the first time in diesel exhaust particulates. In addition, cyclic imides and their alkylated derivatives were tentatively identified for the first time. Other novel polar chemical classes of PAC were evidenced by NICI MS using a direct-insertion probe.

• Availability:
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• Corporate Authors:

  American Chemical Society

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  Washington, DC  United States  20036
• Authors:
  • Bayona, J M
  • Markides, K E
  • LEE, M L
• Publication Date: 1988-12

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 1440-47
• Serial:
  • Environmental Science & Technology
  • Volume: 22
  • Issue Number: 12
  • Publisher: American Chemical Society
  • ISSN: 0013-936X
  • EISSN: 1520-5851
  • Serial URL: http://pubs.acs.org/journal/esthag

Subject/Index Terms

• TRT Terms: Diesel fuels; Exhaust gases; Gas chromatography; Heavy duty vehicles; Mass spectrometry; Particulates
• Old TRIS Terms: Heavy duty engines; Polar compounds; Polycyclic aromatic compounds
• Subject Areas: Energy; Highways;

Filing Info

• Accession Number: 00485303
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 31 1989 12:00AM