التفاصيل البيبلوغرافية
| العنوان: |
Secondary Organic Aerosol Formation from Healthy and Aphid-Stressed Scots Pine Emissions |
| المؤلفون: |
Faiola, Celia L, Pullinen, Iida, Buchholz, Angela, Khalaj, Farzaneh, Ylisirniö, Arttu, Kari, Eetu, Miettinen, Pasi, Holopainen, Jarmo K, Kivimäenpää, Minna, Schobesberger, Siegfried, Yli-Juuti, Taina, Virtanen, Annele |
| المصدر: |
ACS Earth and Space Chemistry, vol 3, iss 9 |
| بيانات النشر: |
eScholarship, University of California |
| سنة النشر: |
2019 |
| المجموعة: |
University of California: eScholarship |
| مصطلحات موضوعية: |
Earth Sciences, Atmospheric Sciences, Climate Action, secondary organic aerosol, volatile organic compounds, atmospheric chemistry, plant stress, acetate-CIMS, Chemical sciences, Physical sciences |
| الوقت: |
1756 - 1772 |
| الوصف: |
One barrier to predicting biogenic secondary organic aerosol (SOA) formation in a changing climate can be attributed to the complex nature of plant volatile emissions. Plant volatile emissions are dynamic over space and time, and change in response to environmental stressors. This study investigated SOA production from emissions of healthy and aphid-stressed Scots pine saplings via dark ozonolysis and photooxidation chemistry. Laboratory experiments using a batch reaction chamber were used to investigate SOA production from different plant volatile mixtures. The volatile mixture from healthy plants included monoterpenes, aromatics, and a small amount of sesquiterpenes. The biggest change in the volatile mixture for aphid-stressed plants was a large increase (from 1.4 to 7.9 ppb) in sesquiterpenes-particularly acyclic sesquiterpenes, such as the farnesene isomers. Acyclic sesquiterpenes had different effects on SOA production depending on the chemical mechanism. Farnesenes suppressed SOA formation from ozonolysis with a 9.7-14.6% SOA mass yield from healthy plant emissions and a 6.9-10.4% SOA mass yield from aphid-stressed plant emissions. Ozonolysis of volatile mixtures containing more farnesenes promoted fragmentation reactions, which produced higher volatility oxidation products. In contrast, plant volatile mixtures containing more farnesenes did not appreciably change SOA production from photooxidation. SOA mass yields ranged from 10.8 to 23.2% from healthy plant emissions and 17.8-26.8% for aphid-stressed plant emissions. This study highlights the potential importance of acyclic terpene chemistry in a future climate regime with an increased presence of plant stress volatiles. |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
unknown |
| العلاقة: |
qt5b26f4kf; https://escholarship.org/uc/item/5b26f4kfTest |
| الإتاحة: |
https://escholarship.org/uc/item/5b26f4kfTest |
| حقوق: |
public |
| رقم الانضمام: |
edsbas.8BD61E24 |
| قاعدة البيانات: |
BASE |
