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- W2377776970 abstract "Carbonyl compounds are toxic volatile organic compounds in atmosphere. Large number of surveys and studies on carbonyl compounds at home and abroad were carried out during recent decade. The main findings of some investigations and studies were reviewed systematically in this paper. The literature shows that the investigation and studies in China were conducted mainly in Beijing, Guangzhou, Qingdao, Hangzhou and Hong Kong, particularly in Guangzhou. Among the carbonyl compounds detected frequently, formaldehyde, acetaldehyde, and acetone were the most abundant carbonyl species. The results of most of studies indicate that the concentrations of carbonyls in urban and industrial area were higher than those in suburban or rural area, indoor higher than outdoor, summer higher than winter, and exhibit clear diurnal trend. Many researchers deduced the potential sources (including vehicular emission, atmospheric photochemical reaction, etc.) according to the concentration ratios of formaldehyde/acetaldehyde (C1/C2) and acetaldehyde/propionaldehyde (C2/C3) as well as the correlations among different carbonyl compounds. However, the above methods can not provide the exact sources of carbonyls and the contributions of different sources. In our opinion, compound-specific carbon isotopic compositions or other new technology should be applied to strengthen the studies on the carbonyl sources and their contributions. Further research is considered necessary on the formation, reaction, transportation and transformation of carbonyls under different climate." @default.
- W2377776970 created "2016-06-24" @default.
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- W2377776970 date "2009-01-01" @default.
- W2377776970 modified "2023-09-28" @default.
- W2377776970 title "Progresses on the research of carbonyl compounds in atmosphere" @default.
- W2377776970 hasPublicationYear "2009" @default.
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