A review of sampling condition effects on Polynuclear Aromatic Hydrocarbons (PNA) from heavy-duty diesel engines

Ronald L. Williams, Joseph Manuel Sr Perez, Margaret E. Griffing

Research output: Contribution to conferencePaperpeer-review

2 Scopus citations

Abstract

Reports published by Gulf R&D Co. and Battelle Columbus Laboratories under contract to the Coordinating Research Council's APRAC project group CAPE-24 were reviewed. Both studies failed to verify the accuracy of polynuclear aromatic hydrocarbon (PNA) emission measurements from heavy-duty diesel engines. Thermal decomposition and chemical reactions of the PNA occur in raw exhaust at temperatures above 500°F. Therefore, pipes which transfer exhaust to dilution tunnels can significantly reduce the apparent emission values. Dilution tunnel conditions have comparatively little effect on PNA measurements. However, vapor traps are required behind particle filters to assure complete collection of 4-ring PNA compounds. Guidelines are presented for controlling and testing sampling systems for accurate PNA emission measurements.

Original languageEnglish (US)
DOIs
StatePublished - Dec 1 1985
EventInternational Fuels and Lubricants Meeting and Exposition - Tulsa, OK, United States
Duration: Oct 21 1985Oct 24 1985

Other

OtherInternational Fuels and Lubricants Meeting and Exposition
Country/TerritoryUnited States
CityTulsa, OK
Period10/21/8510/24/85

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

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