Kunst: eine sichere Anlage

Sofio, Séverine

doi:10.4000/perspective.10015

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Yet, the trend within these monoterpenes is also that their structure becomes more open with the increase in the number of double bonds. More on how the structure influences SOA yields will be presented in a forthcoming paper (Sofio et al 60 ) that describes measurements for a wide range of organic species.…”

Section: ■ Conclusionmentioning

confidence: 99%

See 1 more Smart Citation

Particle Formation from Photooxidation of αpinene, Limonene, and Myrcene

et al. 2022

View full text Add to dashboard Cite

We present measurements of the effect of first-generation secondary organic aerosol (SOA) material on the growth of ∼10 nanometer diameter seed particles composed of sulfuric acid and water. Experiments were performed in an atmospheric pressure, vertically aligned flow reactor where OH was produced from HONO photolysis in the presence of either SO 2 or a monoterpene. For typical conditions, organic compounds at ∼300 ppbv are exposed to photooxidation for a time of ∼80 s at a [OH] of about 6 × 10 6 cm −3 : thus, oxidation products have minimal OH exposure. The measured size changes of the sulfuric acid seed particles can then be attributed to the uptake of firstgeneration products. Along with descriptions of the apparatus and the procedure, the analysis to obtain SOA yields by comparing them to growth with H 2 SO 4 (g) is detailed. Results from photooxidation experiments of αpinene, limonene, and myrcene give SOA yields of 0.040, 0.084, and 0.16, respectively. These SOA yields roughly double with each addition of a double bond to the compound. The αpinene and limonene results are in accord with the results of many previous SOA experiments, while the myrcene SOA yield stands alone. Photooxidation of myrcene also led to significant nucleation, and the species responsible is comparable to H 2 SO 4 at a 35% relative humidity in its nucleation capability.

show abstract

Section: ■ Conclusionmentioning

confidence: 99%

“…The experimental results from photooxidation in our growth flow reactor are robust and in line with the results of other experiments. A forthcoming paper (Sofia et al 2021 60 ) presents the results from experiments designed to explore the dependence of SOA yield on the molecular structure of the organic precursor.…”

Section: ■ Conclusionmentioning

confidence: 99%