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130464 
Journal Article 
Estimates of the contributions of biogenic and anthropogenic hydrocarbons to secondary organic aerosol at a southeastern US location 
Kleindienst, TE; Jaoui, M; Lewandowski, M; Offenberg, JH; Lewis, CW; Bhave, PV; Edney, EO 
2007 
Yes 
Atmospheric Environment
ISSN: 1352-2310 
Elsevier Science, P.O. Box 211 Amsterdam 1000 AE 
41 
37 
8288-8300 
WOS:000251829600024 
The contributions of biogenic and anthropogenic hydrocarbons to secondary organic aerosol (SOA) at a southeastern US location were estimated. Laboratory experiments were conducted to determine the secondary organic carbon (SOC) mass fractions for isoprene, alpha -pinene, beta -caryophyllene, and toluene. Filters from the chamber experiments were either Soxhlet extracted with dichloromethane for 6 h or sonicated in 1:1 dichloromethane/ methanol mixture for 1 h. SOC concentrations were measured using either the conventional filter method with the off-line elemental carbon-organic carbon (EC-OC) monitor or with the semi-continuous OC-EC analyzer. Initial hydrocarbon and NO sub(X) concentrations ranged from 0.92 to 12.6 ppmC and 0.11 to 0.65 ppm, respectively, with the SOA concentrations based on the aerosol gravimetric measurements. The results showed that alpha -pinene and isoprene were the largest contributors. 
AEROSOLS; FILTRATION; GRAVIMETRY; METHANOL; HYDROCARBONS, AIR; CARBON; NITROGEN OXIDES; TOLUENE 
• Methanol (Non-Cancer)
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