Wintertime Residential Biomass Burning in Las Vegas, Nevada; Marker Components and Apportionment Methods

Steven Brown, Taehyoung Lee, Paul Roberts, Jeffrey Collett
2016 Atmosphere  
We characterized residential biomass burning contributions to fine particle concentrations via multiple methods at Fyfe Elementary School in Las Vegas, Nevada, during January 2008: with levoglucosan on quartz fiber filters; with water soluble potassium (K + ) measured using a particle-into-liquid system with ion chromatography (PILS-IC); and with the fragment C 2 H 4 O 2 + from an Aerodyne High Resolution Aerosol Mass Spectrometer (HR-AMS). A Magee Scientific Aethalometer was also used to
more » ... ine aerosol absorption at the UV (370 nm) and black carbon (BC, 880 nm) channels, where UV-BC difference is indicative of biomass burning (BB). Levoglucosan and AMS C 2 H 4 O 2 + measurements were strongly correlated (r 2 = 0.92); K + correlated well with C 2 H 4 O 2 + (r 2 = 0.86) during the evening but not during other times. While K + may be an indicator of BB, it is not necessarily a unique tracer, as non-BB sources appear to contribute significantly to K + and can change from day to day. Low correlation was seen between UV-BC difference and other indicators, possibly because of an overwhelming influence of freeway emissions on BC concentrations. Given the sampling location-next to a twelve-lane freeway-urban-scale biomass burning was found to be a surprisingly large source of aerosol: overnight BB organic aerosol contributed between 26% and 33% of the organic aerosol mass.
doi:10.3390/atmos7040058 fatcat:xzjg6tiyezde7nb2ahp4r4mnzi