Secondary organic aerosol formation and organic nitrate yield from NO3 oxidation of biogenic hydrocarbons.
Environ Sci Technol
; 48(20): 11944-53, 2014 Oct 21.
Article
in En
| MEDLINE
| ID: mdl-25229208
ABSTRACT
The secondary organic aerosol (SOA) mass yields from NO3 oxidation of a series of biogenic volatile organic compounds (BVOCs), consisting of five monoterpenes and one sesquiterpene (α-pinene, ß-pinene, Δ-3-carene, limonene, sabinene, and ß-caryophyllene), were investigated in a series of continuous flow experiments in a 10 m(3) indoor Teflon chamber. By making in situ measurements of the nitrate radical and employing a kinetics box model, we generate time-dependent yield curves as a function of reacted BVOC. SOA yields varied dramatically among the different BVOCs, from zero for α-pinene to 38-65% for Δ-3-carene and 86% for ß-caryophyllene at mass loading of 10 µg m(-3), suggesting that model mechanisms that treat all NO3 + monoterpene reactions equally will lead to errors in predicted SOA depending on each location's mix of BVOC emissions. In most cases, organonitrate is a dominant component of the aerosol produced, but in the case of α-pinene, little organonitrate and no aerosol is formed.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Aerosols
/
Volatile Organic Compounds
/
Nitrates
Type of study:
Prognostic_studies
Language:
En
Journal:
Environ Sci Technol
Year:
2014
Document type:
Article
Affiliation country:
United States