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T1  - Ambient observations of dimers from terpene oxidation in the gas phase : Implications for new particle formation and growth 
SN  -  /  
UR  - http://hdl.handle.net/10138/237042 
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A1  - Mohr, Claudia; Lopez-Hilfiker, Felipe D.; Yli-Juuti, Taina; Heitto, Arto; Lutz, Anna; Hallquist, Mattias; D'Ambro, Emma L.; Rissanen, Matti P.; Hao, Liqing; Schobesberger, Siegfried; Kulmala, Markku; Mauldin III, Roy L.; Makkonen, Ulla; Sipilä, Mikko; Petäjä, Tuukka; Thornton, Joel A. 
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PB  -  
Y1  - 2017 
LA  - eng 
AB  - We present ambient observations of dimeric monoterpene oxidation products (C16-20HyO6-9) in gas and particle phases in the boreal forest in Finland in spring 2013 and 2014, detected with a chemical ionization mass spectrometer with a filter inlet for gases and aerosols employing acetate and iodide as reagent ions. These are among the first online dual-phase observations of such dimers in the atmosphere. Estimated saturation concentrations of 10(-15) to 10(-6)mu gm(-3) (based on observed thermal ... 
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KW  - dimers; CIMS; new particle formation; monoterpene oxidation; boreal forest; SECONDARY ORGANIC AEROSOL; IONIZATION MASS-SPECTROMETRY; ALPHA-PINENE OZONOLYSIS; OXIDIZED RO2 RADICALS; BOREAL-FOREST; VAPOR-PRESSURES; ATMOSPHERIC AEROSOLS; OLIGOMER FORMATION; SOUTHERN OXIDANT; PEROXY-RADICALS; 114 Physical sciences; 1172 Environmental sciences 
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