Chemical characteristics of atmospheric carbonyls in winter and summer in Foshan City
ZHOU Xue-ming1,2, TAN Ji-hua1,2,3, XIANG Ping1,2, HE Xiao-lang4, GUO Song-jun4, DUAN Jing-chun5, HE Ke-bin3, MA Yong-liang3, DENG Si-xin6, SITU Shu-ping6
1. College of Resources and Environment, University of the Chinese Academy of Sciences, Beijing 100049, China;
2. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
3. State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, School of Environment, Tsinghua University, Beijing 100084, China;
4. School of the Environment, Guangxi University, Nanning 530004, China;
5. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
6. Foshan Environmental Protection Bureau, Foshan 528000, China
To observe the seasonal and diurnal variations of atmospheric carbonyl, thirty six carbonyls samples were collected and fourteen carbonyl compounds were identified in Foshan City during winter 2014 and summer 2015. Most carbonyls were observed with high average concentrations in Foshan City and the total concentrations of carbonyls were 36.15μg/m3± 3.45μg/m3 and 33.25μg/m3±4.25μg/m3 in winter and summer, respectively. Formaldehyde (8.54μg/m3, 23.65%), acetone (8.20μg/m3, 22.69%), acetaldehyde (5.79μg/m3, 16.03%) and formaldehyde (14.63μg/m3, 44.01%), acetaldehyde (6.22μg/m3, 18.70%), acetone (5.23μg/m3, 15.73%) were the three most abundant carbonyls in winter and summer, respectively. The diurnal variations of carbonyls remain at a relatively stable and high level in winter, and carbonyls in afternoon were slightly higher than those in the morning and evening. On the contrary, it varied significantly in summer and the carbonyls in afternoon were significantly higher than those in the morning and evening. The ratios of C1/C2 and C2/C3 were 1.56 and 14.35 in winter, and 2.63 and 15.56 in summer, respectively. Human activities were the main sources of carbonyls in Foshan City. The good relationship among formaldehyde, acetaldehyde, acetone and propionaldehyde indicated those carbonyls might have similar sources.
周雪明, 谭吉华, 项萍, 何晓朗, 郭送军, 段菁春, 贺克斌, 马永亮, 邓思欣, 司徒淑娉. 佛山市冬夏季羰基化合物污染特征[J]. 中国环境科学, 2017, 37(3): 844-850.
ZHOU Xue-ming, TAN Ji-hua, XIANG Ping, HE Xiao-lang, GUO Song-jun, DUAN Jing-chun, HE Ke-bin, MA Yong-liang, DENG Si-xin, SITU Shu-ping. Chemical characteristics of atmospheric carbonyls in winter and summer in Foshan City. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(3): 844-850.
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