Characteristics of atmospheric carbonyls during haze days in Beijing, China
| العنوان: | Characteristics of atmospheric carbonyls during haze days in Beijing, China |
|---|---|
| المؤلفون: | Songjun Guo, Jihua Tan, Fahe Chai, Shulan Wang, Jingchun Duan |
| المصدر: | Atmospheric Research. :17-27 |
| بيانات النشر: | Elsevier BV, 2012. |
| سنة النشر: | 2012 |
| مصطلحات موضوعية: | Atmospheric Science, chemistry.chemical_compound, Haze, Ozone, chemistry, Beijing, Diurnal temperature variation, Formaldehyde, Acetaldehyde, Atmospheric sciences |
| الوصف: | Characteristics of atmospheric carbonyls during haze days in Beijing were studied in August 2006. Formaldehyde (35.65 ± 14.74 μg/m3), acetaldehyde (15.65 ± 12.37 μg/m3) and acetone (8.83 ± 5.23 μg/m3) are three most abundant carbonyls, accounting for ~ 75% of total carbonyls. Their levels and O3 clearly peaked in the afternoon (especially for formaldehyde), implying photochemical formation. The observed C1/C2 (2.69 ± 0.78) and C2/C3 (6.29 ± 2.87) ratios indicated the important influence of anthropogenic source on carbonyls, and the higher C1/C2 (2.69) ratio in haze days also implied photochemical formation of carbonyls. Correlation coefficient (R2) among formaldehyde, acetaldehyde, acetone and total carbonyls were 0.66–0.95 together with C1/C2 ratio analysis and diurnal variations of carbonyls and O3, indicating ambient carbonyls in haze days of Beijing are mainly dominated by photochemical formation. |
| تدمد: | 0169-8095 |
| DOI: | 10.1016/j.atmosres.2012.05.010 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::5a669075f1cc31af2e392e6fcfc7bcdc https://doi.org/10.1016/j.atmosres.2012.05.010 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........5a669075f1cc31af2e392e6fcfc7bcdc |
| قاعدة البيانات: | OpenAIRE |
كن أول من يترك تعليقا!