佛山市冬夏季羰基化合物污染特征  

Chemical characteristics of atmospheric carbonyls in winter and summer in Foshan City

作　　者：周雪明[1,2] 谭吉华[1,2,3] 项萍[1,2] 何晓朗 郭送军[4] 段菁春[5] 贺克斌[3] 马永亮[3] 邓思欣 司徒淑娉 

机构地区：[1]中国科学院大学资源与环境学院,北京100049 [2]中国科学院生态环境研究中心,北京100085 [3]清华大学环境学院,国家环境保护大气复合污染来源与控制重点实验室,北京100084 [4]广西大学环境学院,广西南宁530004 [5]中国环境科学研究院,环境基准与风险评估国家重点实验室,北京100012 [6]广东佛山市环境保护局,广东佛山528000

出　　处：《中国环境科学》2017年第3期844-850,共7页China Environmental Science

基　　金：国家自然科学基金资助项目(41105111,41475116,41275134,41675127);国家环境保护大气复合污染来源与控制重点实验室基金项目(SCAPC201401)

摘　　要：2014年冬季和2015年夏季在佛山市采集了36个羰基化合物的样品,检测出了其中14种化合物并进行了定量分析.结果表明,佛山市冬夏季羰基化合物污染严重,采样期间冬季和夏季平均浓度分别为36.15μg/m^3±3.45μg/m^3和33.25μg/m^3±4.25μg/m^3.冬季三种主要污染物为:甲醛(8.54μg/m^3,23.65%)>丙酮(8.20μg/m^3,22.69%)>乙醛(5.79μg/m^3,16.03%);夏季主要污染物为:甲醛(14.63μg/m^3,44.01%)>乙醛(6.22μg/m^3,18.70%)>丙酮(5.23μg/m^3,15.73%);冬季羰基化合物日变化不大,上午与晚上浓度相近,下午浓度略高于上午和晚上;夏季羰基化合物日变化较大,上午与晚上浓度相近,下午浓度明显高于上午和晚上;佛山市冬季C1/C2和C2/C3的浓度比分别为1.56和14.35,夏季C1/C2和C2/C3的浓度比分别为2.63和15.56.佛山大气羰基化合物主要来源于人类活动.冬夏季采样期间甲醛、乙醛、丙酮和丙醛之间具有较好的相关性,可以表明这些羰基化合物可能有相似的来源.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.

关 键 词：羰基化合物 冬季 夏季 污染特征 佛山市 

分 类 号：X511[环境科学与工程—环境工程]