caa a22 4500 467904898 CHVBK 20180406152831.0 cr unu---uuuuu 170328e20060401xx s 000 0 eng 10.1007/s10661-006-5252-6 doi (NATIONALLICENCE)springer-10.1007/s10661-006-5252-6 Concentrations of PM2.5-associated OC, EC, and PCDD/Fs measured during the 2003 wildfire season in Missoula, Montana [Elektronische Daten] [Tony Ward, Emily Lincoln] Throughout August and September, 2003, wildfires burned in close proximity to Missoula, Montana, with smoke emanating from the fires impacting the valley for much of the summer. This presented the perfect opportunity to measure the levels of polychlorinated dibenzodioxins and dibenzofurans (PCDD/F) comprising ambient forest fire smoke particles impacting the Missoula Valley. An air sampler at the Montana Department of Environmental Quality's (DEQ) compliance site in Missoula measured hourly averages of PM10 throughout the fire season. Three collocated PM2.5 cyclones collected 24-h smoke samples using quartz filters and Polyurethane Foam (PUF) sorbent cartridges. From the quartz filters, concentrations of Organic and Elemental Carbon (OC/EC) were measured, while PCDD/F were measured from one set of a filter (particle phase) and PUF (vapor phase) aggregate of samples in an attempt to also investigate the different phases of PCDD/F in forest fire smoke impaired communities. Hourly PM10 concentrations peaked at 302.9 μg m−3 on August 15. The highest OC concentration (115.6 μg m−3) was measured between August 21-22, and the highest EC concentration of 10.5 μg m−3 was measured August 20-21. Measurable concentrations of PM2.5 associated PCDD/Fs were not detected from a representative aggregate sample, with the exception of small amounts of 1,2,3,4,6,7,8-heptachlorodibenzodioxin and octachlorodibenzodioxin. PM2.5 samples collected during the smoke events were composed of approximately 65% OC. However, the OC fraction of the particles collected in the smoke impaired Missoula valley was not composed of significant amounts of PCDD/F. Springer Science + Business Media, Inc., 2006 elemental carbon nationallicence forest fire nationallicence dioxins nationallicence organic carbon nationallicence PM2.5 nationallicence smoke nationallicence Ward Tony Center for Environmental Health Sciences, The University of Montana, Missoula, Montana, U.S.A. aut Lincoln Emily USDA Forest Service, Rocky Mountain Research Station, Fire Sciences Lab, Missoula, Montana, U.S.A. aut Environmental Monitoring and Assessment Kluwer Academic Publishers 115/1-3(2006-04-01), 39-50 0167-6369 115:1-3<39 2006 115 10661 https://doi.org/10.1007/s10661-006-5252-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10661-006-5252-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ward Tony Center for Environmental Health Sciences, The University of Montana, Missoula, Montana, U.S.A aut NATIONALLICENCE 700 1- Lincoln Emily USDA Forest Service, Rocky Mountain Research Station, Fire Sciences Lab, Missoula, Montana, U.S.A aut NATIONALLICENCE 773 0- Environmental Monitoring and Assessment Kluwer Academic Publishers 115/1-3(2006-04-01), 39-50 0167-6369 115:1-3<39 2006 115 10661 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer