Secondary organic aerosol formation from the β-pinene+NO$_{\textrm{3}}$ system: effect of humidity and peroxy radical fate. Boyd, C. M., Sanchez, J., Xu, L., Eugene, A. J., Nah, T., Tuet, W. Y., Guzman, M. I., & Ng, N. L. Atmospheric Chemistry and Physics, 15(13):7497–7522, July, 2015. Publisher: Copernicus GmbH![Secondary organic aerosol formation from the β-pinene+NO$_{\textrm{3}}$ system: effect of humidity and peroxy radical fate [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex \textlessp\textgreater\textlessstrong class="journal-contentHeaderColor"\textgreaterAbstract.\textless/strong\textgreater The formation of secondary organic aerosol (SOA) from the oxidation of β-pinene via nitrate radicals is investigated in the Georgia Tech Environmental Chamber (GTEC) facility. Aerosol yields are determined for experiments performed under both dry (relative humidity (RH) \textless 2 %) and humid (RH = 50 % and RH = 70 %) conditions. To probe the effects of peroxy radical (RO$_{\textrm{2}}$) fate on aerosol formation, "RO$_{\textrm{2}}$ + NO$_{\textrm{3}}$ dominant" and "RO$_{\textrm{2}}$ + HO$_{\textrm{2}}$ dominant" experiments are performed. Gas-phase organic nitrate species (with molecular weights of 215, 229, 231, and 245 amu, which likely correspond to molecular formulas of C$_{\textrm{10}}$H$_{\textrm{17}}$NO$_{\textrm{4}}$, C$_{\textrm{10}}$H$_{\textrm{15}}$NO$_{\textrm{5}}$, C$_{\textrm{10}}$H$_{\textrm{17}}$NO$_{\textrm{5}}$, and C$_{\textrm{10}}$H$_{\textrm{15}}$NO$_{\textrm{6}}$, respectively) are detected by chemical ionization mass spectrometry (CIMS) and their formation mechanisms are proposed. The NO$^{\textrm{+}}$ (at m/z 30) and NO$_{\textrm{2}}$$^{\textrm{+}}$ (at m/z 46) ions contribute about 11 % to the combined organics and nitrate signals in the typical aerosol mass spectrum, with the NO$^{\textrm{+}}$ : NO$_{\textrm{2}}$$^{\textrm{+}}$ ratio ranging from 4.8 to 10.2 in all experiments conducted. The SOA yields in the "RO$_{\textrm{2}}$ + NO$_{\textrm{3}}$ dominant" and "RO$_{\textrm{2}}$ + HO$_{\textrm{2}}$ dominant" experiments are comparable. For a wide range of organic mass loadings (5.1–216.1 μg m$^{\textrm{−3}}$), the aerosol mass yield is calculated to be 27.0–104.1 %. Although humidity does not appear to affect SOA yields, there is evidence of particle-phase hydrolysis of organic nitrates, which are estimated to compose 45–74 % of the organic aerosol. The extent of organic nitrate hydrolysis is significantly lower than that observed in previous studies on photooxidation of volatile organic compounds in the presence of NO$_{\textrm{x}}$. It is estimated that about 90 and 10 % of the organic nitrates formed from the β-pinene+NO$_{\textrm{3}}$ reaction are primary organic nitrates and tertiary organic nitrates, respectively. While the primary organic nitrates do not appear to hydrolyze, the tertiary organic nitrates undergo hydrolysis with a lifetime of 3–4.5 h. Results from this laboratory chamber study provide the fundamental data to evaluate the contributions of monoterpene + NO$_{\textrm{3}}$ reaction to ambient organic aerosol measured in the southeastern United States, including the Southern Oxidant and Aerosol Study (SOAS) and the Southeastern Center for Air Pollution and Epidemiology (SCAPE) study.\textless/p\textgreater
@article{boyd_secondary_2015,
title = {Secondary organic aerosol formation from the β-pinene+{NO}$_{\textrm{3}}$ system: effect of humidity and peroxy radical fate},
volume = {15},
issn = {1680-7316},
shorttitle = {Secondary organic aerosol formation from the β-pinene+{NO}$_{\textrm{3}}$ system},
url = {https://acp.copernicus.org/articles/15/7497/2015/},
doi = {10.5194/acp-15-7497-2015},
abstract = {{\textless}p{\textgreater}{\textless}strong class="journal-contentHeaderColor"{\textgreater}Abstract.{\textless}/strong{\textgreater} The formation of secondary organic aerosol (SOA) from the oxidation of β-pinene via nitrate radicals is investigated in the Georgia Tech Environmental Chamber (GTEC) facility. Aerosol yields are determined for experiments performed under both dry (relative humidity (RH) {\textless} 2 \%) and humid (RH = 50 \% and RH = 70 \%) conditions. To probe the effects of peroxy radical (RO$_{\textrm{2}}$) fate on aerosol formation, "RO$_{\textrm{2}}$ + NO$_{\textrm{3}}$ dominant" and "RO$_{\textrm{2}}$ + HO$_{\textrm{2}}$ dominant" experiments are performed. Gas-phase organic nitrate species (with molecular weights of 215, 229, 231, and 245 amu, which likely correspond to molecular formulas of C$_{\textrm{10}}$H$_{\textrm{17}}$NO$_{\textrm{4}}$, C$_{\textrm{10}}$H$_{\textrm{15}}$NO$_{\textrm{5}}$, C$_{\textrm{10}}$H$_{\textrm{17}}$NO$_{\textrm{5}}$, and C$_{\textrm{10}}$H$_{\textrm{15}}$NO$_{\textrm{6}}$, respectively) are detected by chemical ionization mass spectrometry (CIMS) and their formation mechanisms are proposed. The NO$^{\textrm{+}}$ (at \textit{m/z} 30) and NO$_{\textrm{2}}$$^{\textrm{+}}$ (at \textit{m/z} 46) ions contribute about 11 \% to the combined organics and nitrate signals in the typical aerosol mass spectrum, with the NO$^{\textrm{+}}$ : NO$_{\textrm{2}}$$^{\textrm{+}}$ ratio ranging from 4.8 to 10.2 in all experiments conducted. The SOA yields in the "RO$_{\textrm{2}}$ + NO$_{\textrm{3}}$ dominant" and "RO$_{\textrm{2}}$ + HO$_{\textrm{2}}$ dominant" experiments are comparable. For a wide range of organic mass loadings (5.1–216.1 μg m$^{\textrm{\−3}}$), the aerosol mass yield is calculated to be 27.0–104.1 \%. Although humidity does not appear to affect SOA yields, there is evidence of particle-phase hydrolysis of organic nitrates, which are estimated to compose 45–74 \% of the organic aerosol. The extent of organic nitrate hydrolysis is significantly lower than that observed in previous studies on photooxidation of volatile organic compounds in the presence of NO$_{\textrm{\textit{x}}$}. It is estimated that about 90 and 10 \% of the organic nitrates formed from the β-pinene+NO$_{\textrm{3}}$ reaction are primary organic nitrates and tertiary organic nitrates, respectively. While the primary organic nitrates do not appear to hydrolyze, the tertiary organic nitrates undergo hydrolysis with a lifetime of 3–4.5 h. Results from this laboratory chamber study provide the fundamental data to evaluate the contributions of monoterpene + NO$_{\textrm{3}}$ reaction to ambient organic aerosol measured in the southeastern United States, including the Southern Oxidant and Aerosol Study (SOAS) and the Southeastern Center for Air Pollution and Epidemiology (SCAPE) study.{\textless}/p{\textgreater}},
language = {English},
number = {13},
urldate = {2021-11-21},
journal = {Atmospheric Chemistry and Physics},
author = {Boyd, C. M. and Sanchez, J. and Xu, L. and Eugene, A. J. and Nah, T. and Tuet, W. Y. and Guzman, M. I. and Ng, N. L.},
month = jul,
year = {2015},
note = {Publisher: Copernicus GmbH},
pages = {7497--7522},
}
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L."],"bibdata":{"bibtype":"article","type":"article","title":"Secondary organic aerosol formation from the β-pinene+NO$_{\\textrm{3}}$ system: effect of humidity and peroxy radical fate","volume":"15","issn":"1680-7316","shorttitle":"Secondary organic aerosol formation from the β-pinene+NO$_{\\textrm{3}}$ system","url":"https://acp.copernicus.org/articles/15/7497/2015/","doi":"10.5194/acp-15-7497-2015","abstract":"\\textlessp\\textgreater\\textlessstrong class=\"journal-contentHeaderColor\"\\textgreaterAbstract.\\textless/strong\\textgreater The formation of secondary organic aerosol (SOA) from the oxidation of β-pinene via nitrate radicals is investigated in the Georgia Tech Environmental Chamber (GTEC) facility. Aerosol yields are determined for experiments performed under both dry (relative humidity (RH) \\textless 2 %) and humid (RH = 50 % and RH = 70 %) conditions. To probe the effects of peroxy radical (RO$_{\\textrm{2}}$) fate on aerosol formation, \"RO$_{\\textrm{2}}$ + NO$_{\\textrm{3}}$ dominant\" and \"RO$_{\\textrm{2}}$ + HO$_{\\textrm{2}}$ dominant\" experiments are performed. Gas-phase organic nitrate species (with molecular weights of 215, 229, 231, and 245 amu, which likely correspond to molecular formulas of C$_{\\textrm{10}}$H$_{\\textrm{17}}$NO$_{\\textrm{4}}$, C$_{\\textrm{10}}$H$_{\\textrm{15}}$NO$_{\\textrm{5}}$, C$_{\\textrm{10}}$H$_{\\textrm{17}}$NO$_{\\textrm{5}}$, and C$_{\\textrm{10}}$H$_{\\textrm{15}}$NO$_{\\textrm{6}}$, respectively) are detected by chemical ionization mass spectrometry (CIMS) and their formation mechanisms are proposed. The NO$^{\\textrm{+}}$ (at <i>m/z</i> 30) and NO$_{\\textrm{2}}$$^{\\textrm{+}}$ (at <i>m/z</i> 46) ions contribute about 11 % to the combined organics and nitrate signals in the typical aerosol mass spectrum, with the NO$^{\\textrm{+}}$ : NO$_{\\textrm{2}}$$^{\\textrm{+}}$ ratio ranging from 4.8 to 10.2 in all experiments conducted. The SOA yields in the \"RO$_{\\textrm{2}}$ + NO$_{\\textrm{3}}$ dominant\" and \"RO$_{\\textrm{2}}$ + HO$_{\\textrm{2}}$ dominant\" experiments are comparable. For a wide range of organic mass loadings (5.1–216.1 μg m$^{\\textrm{−3}}$), the aerosol mass yield is calculated to be 27.0–104.1 %. Although humidity does not appear to affect SOA yields, there is evidence of particle-phase hydrolysis of organic nitrates, which are estimated to compose 45–74 % of the organic aerosol. The extent of organic nitrate hydrolysis is significantly lower than that observed in previous studies on photooxidation of volatile organic compounds in the presence of NO$_{\\textrm{<i>x</i>}}$. It is estimated that about 90 and 10 % of the organic nitrates formed from the β-pinene+NO$_{\\textrm{3}}$ reaction are primary organic nitrates and tertiary organic nitrates, respectively. While the primary organic nitrates do not appear to hydrolyze, the tertiary organic nitrates undergo hydrolysis with a lifetime of 3–4.5 h. Results from this laboratory chamber study provide the fundamental data to evaluate the contributions of monoterpene + NO$_{\\textrm{3}}$ reaction to ambient organic aerosol measured in the southeastern United States, including the Southern Oxidant and Aerosol Study (SOAS) and the Southeastern Center for Air Pollution and Epidemiology (SCAPE) study.\\textless/p\\textgreater","language":"English","number":"13","urldate":"2021-11-21","journal":"Atmospheric Chemistry and Physics","author":[{"propositions":[],"lastnames":["Boyd"],"firstnames":["C.","M."],"suffixes":[]},{"propositions":[],"lastnames":["Sanchez"],"firstnames":["J."],"suffixes":[]},{"propositions":[],"lastnames":["Xu"],"firstnames":["L."],"suffixes":[]},{"propositions":[],"lastnames":["Eugene"],"firstnames":["A.","J."],"suffixes":[]},{"propositions":[],"lastnames":["Nah"],"firstnames":["T."],"suffixes":[]},{"propositions":[],"lastnames":["Tuet"],"firstnames":["W.","Y."],"suffixes":[]},{"propositions":[],"lastnames":["Guzman"],"firstnames":["M.","I."],"suffixes":[]},{"propositions":[],"lastnames":["Ng"],"firstnames":["N.","L."],"suffixes":[]}],"month":"July","year":"2015","note":"Publisher: Copernicus GmbH","pages":"7497–7522","bibtex":"@article{boyd_secondary_2015,\n\ttitle = {Secondary organic aerosol formation from the β-pinene+{NO}$_{\\textrm{3}}$ system: effect of humidity and peroxy radical fate},\n\tvolume = {15},\n\tissn = {1680-7316},\n\tshorttitle = {Secondary organic aerosol formation from the β-pinene+{NO}$_{\\textrm{3}}$ system},\n\turl = {https://acp.copernicus.org/articles/15/7497/2015/},\n\tdoi = {10.5194/acp-15-7497-2015},\n\tabstract = {{\\textless}p{\\textgreater}{\\textless}strong class=\"journal-contentHeaderColor\"{\\textgreater}Abstract.{\\textless}/strong{\\textgreater} The formation of secondary organic aerosol (SOA) from the oxidation of β-pinene via nitrate radicals is investigated in the Georgia Tech Environmental Chamber (GTEC) facility. Aerosol yields are determined for experiments performed under both dry (relative humidity (RH) {\\textless} 2 \\%) and humid (RH = 50 \\% and RH = 70 \\%) conditions. To probe the effects of peroxy radical (RO$_{\\textrm{2}}$) fate on aerosol formation, \"RO$_{\\textrm{2}}$ + NO$_{\\textrm{3}}$ dominant\" and \"RO$_{\\textrm{2}}$ + HO$_{\\textrm{2}}$ dominant\" experiments are performed. Gas-phase organic nitrate species (with molecular weights of 215, 229, 231, and 245 amu, which likely correspond to molecular formulas of C$_{\\textrm{10}}$H$_{\\textrm{17}}$NO$_{\\textrm{4}}$, C$_{\\textrm{10}}$H$_{\\textrm{15}}$NO$_{\\textrm{5}}$, C$_{\\textrm{10}}$H$_{\\textrm{17}}$NO$_{\\textrm{5}}$, and C$_{\\textrm{10}}$H$_{\\textrm{15}}$NO$_{\\textrm{6}}$, respectively) are detected by chemical ionization mass spectrometry (CIMS) and their formation mechanisms are proposed. The NO$^{\\textrm{+}}$ (at \\textit{m/z} 30) and NO$_{\\textrm{2}}$$^{\\textrm{+}}$ (at \\textit{m/z} 46) ions contribute about 11 \\% to the combined organics and nitrate signals in the typical aerosol mass spectrum, with the NO$^{\\textrm{+}}$ : NO$_{\\textrm{2}}$$^{\\textrm{+}}$ ratio ranging from 4.8 to 10.2 in all experiments conducted. The SOA yields in the \"RO$_{\\textrm{2}}$ + NO$_{\\textrm{3}}$ dominant\" and \"RO$_{\\textrm{2}}$ + HO$_{\\textrm{2}}$ dominant\" experiments are comparable. For a wide range of organic mass loadings (5.1–216.1 μg m$^{\\textrm{\\−3}}$), the aerosol mass yield is calculated to be 27.0–104.1 \\%. Although humidity does not appear to affect SOA yields, there is evidence of particle-phase hydrolysis of organic nitrates, which are estimated to compose 45–74 \\% of the organic aerosol. The extent of organic nitrate hydrolysis is significantly lower than that observed in previous studies on photooxidation of volatile organic compounds in the presence of NO$_{\\textrm{\\textit{x}}$}. It is estimated that about 90 and 10 \\% of the organic nitrates formed from the β-pinene+NO$_{\\textrm{3}}$ reaction are primary organic nitrates and tertiary organic nitrates, respectively. While the primary organic nitrates do not appear to hydrolyze, the tertiary organic nitrates undergo hydrolysis with a lifetime of 3–4.5 h. Results from this laboratory chamber study provide the fundamental data to evaluate the contributions of monoterpene + NO$_{\\textrm{3}}$ reaction to ambient organic aerosol measured in the southeastern United States, including the Southern Oxidant and Aerosol Study (SOAS) and the Southeastern Center for Air Pollution and Epidemiology (SCAPE) study.{\\textless}/p{\\textgreater}},\n\tlanguage = {English},\n\tnumber = {13},\n\turldate = {2021-11-21},\n\tjournal = {Atmospheric Chemistry and Physics},\n\tauthor = {Boyd, C. M. and Sanchez, J. and Xu, L. and Eugene, A. J. and Nah, T. and Tuet, W. Y. and Guzman, M. I. and Ng, N. L.},\n\tmonth = jul,\n\tyear = {2015},\n\tnote = {Publisher: Copernicus GmbH},\n\tpages = {7497--7522},\n}\n\n","author_short":["Boyd, C. M.","Sanchez, J.","Xu, L.","Eugene, A. J.","Nah, T.","Tuet, W. Y.","Guzman, M. I.","Ng, N. 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