Academic Journal
Reactions between Criegee Intermediates and the Inorganic Acids HCl and HNO 3 : Kinetics and Atmospheric Implications
| العنوان: | Reactions between Criegee Intermediates and the Inorganic Acids HCl and HNO 3 : Kinetics and Atmospheric Implications |
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| المؤلفون: | Foreman, Elizabeth S., Kapnas, Kara M., Murray, Craig |
| المساهمون: | AirUCI |
| المصدر: | Angewandte Chemie International Edition ; volume 55, issue 35, page 10419-10422 ; ISSN 1433-7851 1521-3773 |
| بيانات النشر: | Wiley |
| سنة النشر: | 2016 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | Criegee intermediates (CIs) are a class of reactive radicals that are thought to play a key role in atmospheric chemistry through reactions with trace species that can lead to aerosol particle formation. Recent work has suggested that water vapor is likely to be the dominant sink for some CIs, although reactions with trace species that are sufficiently rapid can be locally competitive. Herein, we use broadband transient absorption spectroscopy to measure rate constants for the reactions of the simplest CI, CH 2 OO, with two inorganic acids, HCl and HNO 3 , both of which are present in polluted urban atmospheres. Both reactions are fast; at 295 K, the reactions of CH 2 OO with HCl and HNO 3 have rate constants of 4.6×10 −11 cm 3 s −1 and 5.4×10 −10 cm 3 s −1 , respectively. Complementary quantum‐chemical calculations show that these reactions form substituted hydroperoxides with no energy barrier. The results suggest that reactions of CIs with HNO 3 in particular are likely to be competitive with those with water vapor in polluted urban areas under conditions of modest relative humidity. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1002/anie.201604662 |
| الاتاحة: | http://dx.doi.org/10.1002/anie.201604662 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fanie.201604662 https://onlinelibrary.wiley.com/doi/pdf/10.1002/anie.201604662 |
| Rights: | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| رقم الانضمام: | edsbas.FD7332EF |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/anie.201604662 |
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