摘要
利用空气采样泵采样、高效液相色谱仪(HPLC)分析的方法,于2014年7—8月在上海市典型区域3个站点(临港、青浦、徐汇)开展大气中羰基化合物的观测。结果表明,临港、青浦、徐汇的总羰基化合物质量浓度分别为23.01~39.93、41.32~49.65、56.58~90.08μg/m3。羰基化合物中,丙酮浓度最高,其次是甲醛。3个站点羰基化合物的臭氧生成潜势(OFP)为110.70~161.58μg/m3,其中甲醛贡献率最大。总羰基化合物浓度在每日中午或下午达到峰值。通过甲醛/乙醛(质量比)判断,临港、徐汇的羰基化合物更符合中心城区特征,而青浦的羰基化合物更符合郊区特征。
The concentrations of carbonyl compounds in 3typical sites（Lingang,Qingpu,Xuhui）of Shanghai were sampled by air sampling pump and analyzed by high performance liquid chromatography（HPLC）in July and August in 2014.The total concentrations of carbonyl compounds in Lingang,Qingpu and Xuhui were 23.01-39.93,41.32-49.65 and 56.58-90.08μg/m3,respectively.The most abundant carbonyl compound was acetone,followed by formaldehyde.The ozone formation potential（OFP）of carbonyl compounds in 3sites varied from 110.70μg/m3 to161.58μg/m3,and formaldehyde contributed the most.The total concentrations of carbonyl compounds in 3sites reached peak value in noontime or afternoon.Formaldehyde/acetaldehyde（mass fraction）implied that Lingang and Xuhui belonged to downtown characteristic and that Qingpu belonged to suburb characteristic.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2017年第7期713-716,共4页
Environmental Pollution & Control
基金
国家自然科学基金资助项目(No.21607104
No.41505113)
上海市科学技术委员会计划项目(No.14YF1413200
No.16DZ1204604)
国家重点研发计划项目(No.2016YFC0202201)
江苏省自然科学基金资助项目(No.BK20150896)
