Chemical composition of nanoparticles from <i>α</i>-pinene nucleation and the influence of isoprene and relative humidity at low temperature

<p>Biogenic organic precursors play an important role in atmospheric new particle formation (NPF). One of the major precursor species is <span class="inline-formula"><i>α</i></span>-pinene, which upon oxidation can form a suite of products covering a wide rang...

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Autores principales: L. Caudillo, B. Rörup, M. Heinritzi, G. Marie, M. Simon, A. C. Wagner, T. Müller, M. Granzin, A. Amorim, F. Ataei, R. Baalbaki, B. Bertozzi, Z. Brasseur, R. Chiu, B. Chu, L. Dada, J. Duplissy, H. Finkenzeller, L. Gonzalez Carracedo, X.-C. He, V. Hofbauer, W. Kong, H. Lamkaddam, C. P. Lee, B. Lopez, N. G. A. Mahfouz, V. Makhmutov, H. E. Manninen, R. Marten, D. Massabò, R. L. Mauldin, B. Mentler, U. Molteni, A. Onnela, J. Pfeifer, M. Philippov, A. A. Piedehierro, M. Schervish, W. Scholz, B. Schulze, J. Shen, D. Stolzenburg, Y. Stozhkov, M. Surdu, C. Tauber, Y. J. Tham, P. Tian, A. Tomé, S. Vogt, M. Wang, D. S. Wang, S. K. Weber, A. Welti, W. Yonghong, W. Yusheng, M. Zauner-Wieczorek, U. Baltensperger, I. El Haddad, R. C. Flagan, A. Hansel, K. Höhler, J. Kirkby, M. Kulmala, K. Lehtipalo, O. Möhler, H. Saathoff, R. Volkamer, P. M. Winkler, N. M. Donahue, A. Kürten, J. Curtius
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Lenguaje:EN
Publicado: Copernicus Publications 2021
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id oai:doaj.org-article:49e181487bc54896a3f154f556547c1d
record_format dspace
institution DOAJ
collection DOAJ
language EN
topic Physics
QC1-999
Chemistry
QD1-999
spellingShingle Physics
QC1-999
Chemistry
QD1-999
L. Caudillo
B. Rörup
M. Heinritzi
G. Marie
M. Simon
A. C. Wagner
T. Müller
T. Müller
M. Granzin
A. Amorim
F. Ataei
R. Baalbaki
B. Bertozzi
Z. Brasseur
R. Chiu
B. Chu
L. Dada
J. Duplissy
J. Duplissy
H. Finkenzeller
L. Gonzalez Carracedo
X.-C. He
V. Hofbauer
W. Kong
W. Kong
H. Lamkaddam
C. P. Lee
B. Lopez
N. G. A. Mahfouz
V. Makhmutov
V. Makhmutov
H. E. Manninen
R. Marten
D. Massabò
R. L. Mauldin
R. L. Mauldin
B. Mentler
U. Molteni
U. Molteni
U. Molteni
A. Onnela
J. Pfeifer
M. Philippov
A. A. Piedehierro
M. Schervish
W. Scholz
B. Schulze
J. Shen
D. Stolzenburg
Y. Stozhkov
M. Surdu
C. Tauber
Y. J. Tham
P. Tian
A. Tomé
S. Vogt
M. Wang
D. S. Wang
S. K. Weber
A. Welti
W. Yonghong
W. Yusheng
M. Zauner-Wieczorek
U. Baltensperger
I. El Haddad
R. C. Flagan
A. Hansel
A. Hansel
K. Höhler
J. Kirkby
J. Kirkby
M. Kulmala
M. Kulmala
M. Kulmala
K. Lehtipalo
K. Lehtipalo
O. Möhler
H. Saathoff
R. Volkamer
P. M. Winkler
N. M. Donahue
A. Kürten
J. Curtius
Chemical composition of nanoparticles from <i>α</i>-pinene nucleation and the influence of isoprene and relative humidity at low temperature
description <p>Biogenic organic precursors play an important role in atmospheric new particle formation (NPF). One of the major precursor species is <span class="inline-formula"><i>α</i></span>-pinene, which upon oxidation can form a suite of products covering a wide range of volatilities. Highly oxygenated organic molecules (HOMs) comprise a fraction of the oxidation products formed. While it is known that HOMs contribute to secondary organic aerosol (SOA) formation, including NPF, they have not been well studied in newly formed particles due to their very low mass concentrations. Here we present gas- and particle-phase chemical composition data from experimental studies of <span class="inline-formula"><i>α</i></span>-pinene oxidation, including in the presence of isoprene, at temperatures (<span class="inline-formula">−</span>50 and <span class="inline-formula">−</span>30 <span class="inline-formula"><sup>∘</sup></span>C) and relative humidities (20 % and 60 %) relevant in the upper free troposphere. The measurements took place at the CERN Cosmics Leaving Outdoor Droplets (CLOUD) chamber. The particle chemical composition was analyzed by a thermal desorption differential mobility analyzer (TD-DMA) coupled to a nitrate chemical ionization–atmospheric pressure interface–time-of-flight (CI-APi-TOF) mass spectrometer. CI-APi-TOF was used for particle- and gas-phase measurements, applying the same ionization and detection scheme. Our measurements revealed the presence of C<span class="inline-formula"><sub>8−10</sub></span> monomers and C<span class="inline-formula"><sub>18−20</sub></span> dimers as the major compounds in the particles (diameter up to <span class="inline-formula">∼</span> 100 nm). Particularly, for the system with isoprene added, C<span class="inline-formula"><sub>5</sub></span> (C<span class="inline-formula"><sub>5</sub></span>H<span class="inline-formula"><sub>10</sub></span>O<span class="inline-formula"><sub>5−7</sub></span>) and C<span class="inline-formula"><sub>15</sub></span> compounds (C<span class="inline-formula"><sub>15</sub></span>H<span class="inline-formula"><sub>24</sub></span>O<span class="inline-formula"><sub>5−10</sub></span>) were detected. This observation is consistent with the previously observed formation of such compounds in the gas phase. However, although the C<span class="inline-formula"><sub>5</sub></span> and C<span class="inline-formula"><sub>15</sub></span> compounds do not easily nucleate, our measurements indicate that they can still contribute to the particle growth at free tropospheric conditions. For the experiments reported here, most likely isoprene oxidation products enhance the growth of particles larger than 15 nm. Additionally, we report on the nucleation rates measured at 1.7 nm (<span class="inline-formula"><i>J</i><sub>1.7 nm</sub></span>) and compared with previous studies, we found lower <span class="inline-formula"><i>J</i><sub>1.7 nm</sub></span> values, very likely due to the higher <span class="inline-formula"><i>α</i></span>-pinene and ozone mixing ratios used in the present study.</p>
format article
author L. Caudillo
B. Rörup
M. Heinritzi
G. Marie
M. Simon
A. C. Wagner
T. Müller
T. Müller
M. Granzin
A. Amorim
F. Ataei
R. Baalbaki
B. Bertozzi
Z. Brasseur
R. Chiu
B. Chu
L. Dada
J. Duplissy
J. Duplissy
H. Finkenzeller
L. Gonzalez Carracedo
X.-C. He
V. Hofbauer
W. Kong
W. Kong
H. Lamkaddam
C. P. Lee
B. Lopez
N. G. A. Mahfouz
V. Makhmutov
V. Makhmutov
H. E. Manninen
R. Marten
D. Massabò
R. L. Mauldin
R. L. Mauldin
B. Mentler
U. Molteni
U. Molteni
U. Molteni
A. Onnela
J. Pfeifer
M. Philippov
A. A. Piedehierro
M. Schervish
W. Scholz
B. Schulze
J. Shen
D. Stolzenburg
Y. Stozhkov
M. Surdu
C. Tauber
Y. J. Tham
P. Tian
A. Tomé
S. Vogt
M. Wang
D. S. Wang
S. K. Weber
A. Welti
W. Yonghong
W. Yusheng
M. Zauner-Wieczorek
U. Baltensperger
I. El Haddad
R. C. Flagan
A. Hansel
A. Hansel
K. Höhler
J. Kirkby
J. Kirkby
M. Kulmala
M. Kulmala
M. Kulmala
K. Lehtipalo
K. Lehtipalo
O. Möhler
H. Saathoff
R. Volkamer
P. M. Winkler
N. M. Donahue
A. Kürten
J. Curtius
author_facet L. Caudillo
B. Rörup
M. Heinritzi
G. Marie
M. Simon
A. C. Wagner
T. Müller
T. Müller
M. Granzin
A. Amorim
F. Ataei
R. Baalbaki
B. Bertozzi
Z. Brasseur
R. Chiu
B. Chu
L. Dada
J. Duplissy
J. Duplissy
H. Finkenzeller
L. Gonzalez Carracedo
X.-C. He
V. Hofbauer
W. Kong
W. Kong
H. Lamkaddam
C. P. Lee
B. Lopez
N. G. A. Mahfouz
V. Makhmutov
V. Makhmutov
H. E. Manninen
R. Marten
D. Massabò
R. L. Mauldin
R. L. Mauldin
B. Mentler
U. Molteni
U. Molteni
U. Molteni
A. Onnela
J. Pfeifer
M. Philippov
A. A. Piedehierro
M. Schervish
W. Scholz
B. Schulze
J. Shen
D. Stolzenburg
Y. Stozhkov
M. Surdu
C. Tauber
Y. J. Tham
P. Tian
A. Tomé
S. Vogt
M. Wang
D. S. Wang
S. K. Weber
A. Welti
W. Yonghong
W. Yusheng
M. Zauner-Wieczorek
U. Baltensperger
I. El Haddad
R. C. Flagan
A. Hansel
A. Hansel
K. Höhler
J. Kirkby
J. Kirkby
M. Kulmala
M. Kulmala
M. Kulmala
K. Lehtipalo
K. Lehtipalo
O. Möhler
H. Saathoff
R. Volkamer
P. M. Winkler
N. M. Donahue
A. Kürten
J. Curtius
author_sort L. Caudillo
title Chemical composition of nanoparticles from <i>α</i>-pinene nucleation and the influence of isoprene and relative humidity at low temperature
title_short Chemical composition of nanoparticles from <i>α</i>-pinene nucleation and the influence of isoprene and relative humidity at low temperature
title_full Chemical composition of nanoparticles from <i>α</i>-pinene nucleation and the influence of isoprene and relative humidity at low temperature
title_fullStr Chemical composition of nanoparticles from <i>α</i>-pinene nucleation and the influence of isoprene and relative humidity at low temperature
title_full_unstemmed Chemical composition of nanoparticles from <i>α</i>-pinene nucleation and the influence of isoprene and relative humidity at low temperature
title_sort chemical composition of nanoparticles from <i>α</i>-pinene nucleation and the influence of isoprene and relative humidity at low temperature
publisher Copernicus Publications
publishDate 2021
url https://doaj.org/article/49e181487bc54896a3f154f556547c1d
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spelling oai:doaj.org-article:49e181487bc54896a3f154f556547c1d2021-11-25T06:04:30ZChemical composition of nanoparticles from <i>α</i>-pinene nucleation and the influence of isoprene and relative humidity at low temperature10.5194/acp-21-17099-20211680-73161680-7324https://doaj.org/article/49e181487bc54896a3f154f556547c1d2021-11-01T00:00:00Zhttps://acp.copernicus.org/articles/21/17099/2021/acp-21-17099-2021.pdfhttps://doaj.org/toc/1680-7316https://doaj.org/toc/1680-7324<p>Biogenic organic precursors play an important role in atmospheric new particle formation (NPF). One of the major precursor species is <span class="inline-formula"><i>α</i></span>-pinene, which upon oxidation can form a suite of products covering a wide range of volatilities. Highly oxygenated organic molecules (HOMs) comprise a fraction of the oxidation products formed. While it is known that HOMs contribute to secondary organic aerosol (SOA) formation, including NPF, they have not been well studied in newly formed particles due to their very low mass concentrations. Here we present gas- and particle-phase chemical composition data from experimental studies of <span class="inline-formula"><i>α</i></span>-pinene oxidation, including in the presence of isoprene, at temperatures (<span class="inline-formula">−</span>50 and <span class="inline-formula">−</span>30 <span class="inline-formula"><sup>∘</sup></span>C) and relative humidities (20 % and 60 %) relevant in the upper free troposphere. The measurements took place at the CERN Cosmics Leaving Outdoor Droplets (CLOUD) chamber. The particle chemical composition was analyzed by a thermal desorption differential mobility analyzer (TD-DMA) coupled to a nitrate chemical ionization–atmospheric pressure interface–time-of-flight (CI-APi-TOF) mass spectrometer. CI-APi-TOF was used for particle- and gas-phase measurements, applying the same ionization and detection scheme. Our measurements revealed the presence of C<span class="inline-formula"><sub>8−10</sub></span> monomers and C<span class="inline-formula"><sub>18−20</sub></span> dimers as the major compounds in the particles (diameter up to <span class="inline-formula">∼</span> 100 nm). Particularly, for the system with isoprene added, C<span class="inline-formula"><sub>5</sub></span> (C<span class="inline-formula"><sub>5</sub></span>H<span class="inline-formula"><sub>10</sub></span>O<span class="inline-formula"><sub>5−7</sub></span>) and C<span class="inline-formula"><sub>15</sub></span> compounds (C<span class="inline-formula"><sub>15</sub></span>H<span class="inline-formula"><sub>24</sub></span>O<span class="inline-formula"><sub>5−10</sub></span>) were detected. This observation is consistent with the previously observed formation of such compounds in the gas phase. However, although the C<span class="inline-formula"><sub>5</sub></span> and C<span class="inline-formula"><sub>15</sub></span> compounds do not easily nucleate, our measurements indicate that they can still contribute to the particle growth at free tropospheric conditions. For the experiments reported here, most likely isoprene oxidation products enhance the growth of particles larger than 15 nm. Additionally, we report on the nucleation rates measured at 1.7 nm (<span class="inline-formula"><i>J</i><sub>1.7 nm</sub></span>) and compared with previous studies, we found lower <span class="inline-formula"><i>J</i><sub>1.7 nm</sub></span> values, very likely due to the higher <span class="inline-formula"><i>α</i></span>-pinene and ozone mixing ratios used in the present study.</p>L. CaudilloB. RörupM. HeinritziG. MarieM. SimonA. C. WagnerT. MüllerT. MüllerM. GranzinA. AmorimF. AtaeiR. BaalbakiB. BertozziZ. BrasseurR. ChiuB. ChuL. DadaJ. DuplissyJ. DuplissyH. FinkenzellerL. Gonzalez CarracedoX.-C. HeV. HofbauerW. KongW. KongH. LamkaddamC. P. LeeB. LopezN. G. A. MahfouzV. MakhmutovV. MakhmutovH. E. ManninenR. MartenD. MassabòR. L. MauldinR. L. MauldinB. MentlerU. MolteniU. MolteniU. MolteniA. OnnelaJ. PfeiferM. PhilippovA. A. PiedehierroM. SchervishW. ScholzB. SchulzeJ. ShenD. StolzenburgY. StozhkovM. SurduC. TauberY. J. ThamP. TianA. ToméS. VogtM. WangD. S. WangS. K. WeberA. WeltiW. YonghongW. YushengM. Zauner-WieczorekU. BaltenspergerI. El HaddadR. C. FlaganA. HanselA. HanselK. HöhlerJ. KirkbyJ. KirkbyM. KulmalaM. KulmalaM. KulmalaK. LehtipaloK. LehtipaloO. MöhlerH. SaathoffR. VolkamerP. M. WinklerN. M. DonahueA. KürtenJ. CurtiusCopernicus PublicationsarticlePhysicsQC1-999ChemistryQD1-999ENAtmospheric Chemistry and Physics, Vol 21, Pp 17099-17114 (2021)