Carbon isotope (14C) and chemical information for source identification of Denver PM10 aerosol during winter non-compliance periods
- National Institute of Standards and Technology, Gaithersburg, MD (United States)
From 1987-1992 the Denver metropolitan area was classified as being in compliance with the 24-hour PM10 Standard. During the winter of 1992-1993, Denver exceeded the PM10 standard on four days. As a result, ten aerosol samples collected on quartz-fiber filters at five sites were analyzed for radiocarbon (14C) via accelerator mass spectrometry to quantity fossil- and bio-mass Source contributions. The PM10 carbon concentrations ranged from 16-54 !g/m3 and the contribution from wood burning ranged from 8-30%. Work is underway to apply on-line supercritical fluid extraction/gas chromatography-mass spectrometry (SFE/GC-MS) to these samples to explore patterns of polycyclic aromatic hydrocarbons and their relationship to chemical and isotopic source signatures.
- OSTI ID:
- 166553
- Report Number(s):
- CONF-9510126-; TRN: 95:008181-0044
- Resource Relation:
- Conference: Annual meeting of the American Association for Aerosol Research, Pittsburgh, PA (United States), 9-13 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of American Association for Aerosol Research (AAAR) `95; PB: 464 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Can 3-D models explain the observed fractions of fossil and non-fossil carbon in and near Mexico City?
Application of radiocarbon analysis and receptor modeling to the source apportionment of PAHs (polycyclic aromatic hydrocarbons) in the atmosphere