Seasonal behavior of carbonyls and source characterization of formaldehyde (HCHO) in ambient air

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• 作者：K.H. Lui^a ; Steven Sai Hang Ho^b ; ^c ; Peter K.K. Louie^d ; C.S. Chan^a ; S.C. Lee^e ; Di Hu^f ; P.W. Chan^g ; Jeffrey Chi Wai Lee^g ; K.F. Ho^a ; ^{kfho@cuhk.edu.hk}
• 关键词：Carbonyl ; Seasonal variation ; Source apportionment analysis ; Ambient air ; Correlation analysis
• 刊名：Atmospheric Environment
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：152
• 期：Complete
• 页码：51-60
• 全文大小：630 K
• 卷排序：152

文摘

Formaldehyde (HCHO) and acetaldehyde together contribute >70% to total carbonyls. Strong correlation between the two compounds implies same source. Rural area with low vehicular emissions shows lowest primary HCHO contribution. Highest primary source signal in winter due to direct emissions at low temperature. Acetone not reported due to DNPH cartridge shows negative biases in measurement.