Secondary organic aerosol formation from styrene photolysis and photooxidation with hydroxyl radicals

Measurements of higher alkanes using NO<sup>+</sup>PTR-ToF-MS: significant contributions of higher alkanes to secondary organic aerosols in China

“…The OH reaction rate constant of each compound was taken from literature (Atkinson, 2003). SOA yield data used here for higher alkanes (Lim and Ziemann, 2009;Presto et al, 2010b;Loza et al, 2014;Lamkaddam et al, 2017b), monoaromatics Ng et al, 2007;Tajuelo et al, 2019), naphthalenes (Chan et al, 2009) and isoprenoids (Ahlberg et al, 2017;Carlton et al, 2009;Edney et al, 2005 Pandis et al, 1991) were summarized from reported values in the literature, with the consideration of the influence of organic aerosol concentration ( Figure S11) to SOA yields (Donahue et al, 2006) ( Figure S12-13).…”

“…As shown above, temperature (mean temperature 0.5±3.6 °C) in NCP winter campaign was significantly lower than the temperature (usually 25 °C) at which SOA yields are derived from chamber studies. Temperature can significantly influence SOA yields, with higher yields at lower temperature (Takekawa et al, 2003;Lamkaddam et al, 2017b). It might cause underestimation of SOA production from various precursors in winter of NCP.…”

Supplementary material to "Measurements of higher alkanes using NO<sup>+</sup>PTR-ToF-MS: significant contributions of higher alkanes to secondary organic aerosols in China"

“…The OH reaction rate constant of each compound was taken literature (Atkinson, 2003). SOA yield data used here for alkanes (Lim and Ziemann, 2009;Presto et al, 2010a;Loza et al, 2014;Lamkaddam et al, 2017a), monoaromatics (Li et al, 2016;Tajuelo et al, 2019;Ng et al, 2007), naphthalenes (Chan et al, 2009) and isoprenoids (Ahlberg et al, 2017;Carlton et al, 2009;Edney et al, 2005;Kleindienst et al, 2006;Pandis et al, 1991) were summarized from reported values in the literature, with the consideration on the influence of organic aerosol concentration ( Figure S11) to SOA yield ( Figure S12-13). OH concentrations are derived from an observation-constrained box model utilizing MCM v3.3.1 as the chemical mechanisms (Wolfe et al, 2016).…”

“…Figure S12. The reported SOA yields as a function of OA concentrations for higher alkanes (C8-C21 alkanes) (a-k) under high-NOx condition from chamber studies (Lim and Ziemann, 2009;Presto et al, 2010b;Tkacik et al, 2012;Loza et al, 2014;Lamkaddam et al, 2017b). Figure S13.…”

“…Figure S13. The reported SOA yields as a function of OA concentrations for monoaromatics (benzene, toluene, m-xylene, 1,2,3-TMB/1,2,4-TMB/1,3,5-TMB, styrene) (Ng et al, 2007;Li et al, 2016;Tajuelo et al, 2019) (a-e), naphthalenes (naphthalene, methylnaphthalene, dimethylnaphthalenes) (Chan et al, 2009) (f-h) and isoprenoids (isoprene and αpinene) (Carlton et al, 2009;Edney et al, 2005;Kleindienst et al, 2006;Pandis et al, 1991;Ahlberg et al, 2017) (i-j) under high-NOx condition from chamber studies. as the chemical mechanisms (Wolfe et al, 2016).…”