Abstract
A combination of flow reactor studies and chamber modeling is used to constrain two uncertain parameters central to the formation of secondary organic aerosol (SOA) from isoprene-derived epoxides: (1) the rate of heterogeneous uptake of epoxide to the particle phase and (2) the molar fraction of epoxide reactively taken up that contributes to SOA, the SOA yield (φSOA). Flow reactor measurements of the trans-β-isoprene epoxydiol (trans-β-IEPOX) and methacrylic acid epoxide (MAE) aerosol reaction probability (γ) were performed on atomized aerosols with compositions similar to those used in chamber studies. Observed γ ranges for trans-β-IEPOX and MAE were 6.5 × 10-4-0.021 and 4.9-5.2 × 10-4, respectively. Through the use of a time-dependent chemical box model initialized with chamber conditions and γ measurements, φSOA values for trans-β-IEPOX and MAE on different aerosol compositions were estimated between 0.03-0.21 and 0.07-0.25, respectively, with the MAE φSOA showing more uncertainty.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 38-42 |
| Number of pages | 5 |
| Journal | Environmental Science and Technology Letters |
| Volume | 2 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 10 2015 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Ecology
- Environmental Chemistry
- Health, Toxicology and Mutagenesis
- Pollution
- Waste Management and Disposal
- Water Science and Technology
Cite this
Heterogeneous reactions of isoprene-derived epoxides : Reaction probabilities and molar secondary organic aerosol yield estimates. / Riedel, Theran P.; Lin, Ying Hsuan; Budisulistiorini, Sri Hapsari; Gaston, Cassandra; Thornton, Joel A.; Zhang, Zhenfa; Vizuete, William; Gold, Avram; Surratt, Jason D.
In: Environmental Science and Technology Letters, Vol. 2, No. 2, 10.02.2015, p. 38-42.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Heterogeneous reactions of isoprene-derived epoxides
T2 - Reaction probabilities and molar secondary organic aerosol yield estimates
AU - Riedel, Theran P.
AU - Lin, Ying Hsuan
AU - Budisulistiorini, Sri Hapsari
AU - Gaston, Cassandra
AU - Thornton, Joel A.
AU - Zhang, Zhenfa
AU - Vizuete, William
AU - Gold, Avram
AU - Surratt, Jason D.
PY - 2015/2/10
Y1 - 2015/2/10
N2 - A combination of flow reactor studies and chamber modeling is used to constrain two uncertain parameters central to the formation of secondary organic aerosol (SOA) from isoprene-derived epoxides: (1) the rate of heterogeneous uptake of epoxide to the particle phase and (2) the molar fraction of epoxide reactively taken up that contributes to SOA, the SOA yield (φSOA). Flow reactor measurements of the trans-β-isoprene epoxydiol (trans-β-IEPOX) and methacrylic acid epoxide (MAE) aerosol reaction probability (γ) were performed on atomized aerosols with compositions similar to those used in chamber studies. Observed γ ranges for trans-β-IEPOX and MAE were 6.5 × 10-4-0.021 and 4.9-5.2 × 10-4, respectively. Through the use of a time-dependent chemical box model initialized with chamber conditions and γ measurements, φSOA values for trans-β-IEPOX and MAE on different aerosol compositions were estimated between 0.03-0.21 and 0.07-0.25, respectively, with the MAE φSOA showing more uncertainty.
AB - A combination of flow reactor studies and chamber modeling is used to constrain two uncertain parameters central to the formation of secondary organic aerosol (SOA) from isoprene-derived epoxides: (1) the rate of heterogeneous uptake of epoxide to the particle phase and (2) the molar fraction of epoxide reactively taken up that contributes to SOA, the SOA yield (φSOA). Flow reactor measurements of the trans-β-isoprene epoxydiol (trans-β-IEPOX) and methacrylic acid epoxide (MAE) aerosol reaction probability (γ) were performed on atomized aerosols with compositions similar to those used in chamber studies. Observed γ ranges for trans-β-IEPOX and MAE were 6.5 × 10-4-0.021 and 4.9-5.2 × 10-4, respectively. Through the use of a time-dependent chemical box model initialized with chamber conditions and γ measurements, φSOA values for trans-β-IEPOX and MAE on different aerosol compositions were estimated between 0.03-0.21 and 0.07-0.25, respectively, with the MAE φSOA showing more uncertainty.
UR - http://www.scopus.com/inward/record.url?scp=84934341383&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84934341383&partnerID=8YFLogxK
U2 - 10.1021/ez500406f
DO - 10.1021/ez500406f
M3 - Article
AN - SCOPUS:84934341383
VL - 2
SP - 38
EP - 42
JO - Environmental Science and Technology Letters
JF - Environmental Science and Technology Letters
SN - 2328-8930
IS - 2
ER -