GYIG OpenIR  > 环境地球化学国家重点实验室  > 期刊论文
Temporal variations of atmospheric carbonyls in urban ambient air and street canyons of a Mountainous city in Southwest China
X Pang; X Lee
2010
发表期刊Atmospheric Environment
卷号44期号:17页码:2098-2106
摘要Carbonyl compounds in urban ambient air and street canyons were measured from December 2008 to August 2009 in a mountainous city in southwest China (Guiyang). The formaldehyde yield from the photo-oxidation of isoprene emitted by vegetation was estimated to be in the range of 0.63–3.6202μg02m 613 from May to August, which accounted for 28.8–33.4% of ambient formaldehyde. Based on the calculation of photolysis rates and rates of reaction with the OH radical, it was found that photolysis was the predominant sink for formaldehyde and acetone in both summer and winter. For acetaldehyde, photo-oxidation by OH radicals and photolysis were the major sinks in summer while photo-oxidation by OH radicals was the dominant sink in winter. Wet precipitation was found to be an important removal process for the atmospheric carbonyls. In the urban ambient air, the average concentrations of formaldehyde, acetaldehyde, acetone and all carbonyls were 4.802±022.1, 5.702±023.3, 5.102±022.5, and 25.102±029.202μg02m 613 ( n 02=02139), respectively. The average concentrations of these species in street canyons were 18.802±026.5, 9.402±023.2, 10.902±022.1, and 64.102±0216.302μg02m 613 ( n 02=0262), respectively. The significantly higher carbonyl levels on weekdays (compared to weekends) highlight the contribution of vehicle emissions to carbonyls in the street canyons.
学科领域环境地球化学
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/352002/6825
专题环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
推荐引用方式
GB/T 7714
X Pang,X Lee. Temporal variations of atmospheric carbonyls in urban ambient air and street canyons of a Mountainous city in Southwest China[J]. Atmospheric Environment,2010,44(17):2098-2106.
APA X Pang,&X Lee.(2010).Temporal variations of atmospheric carbonyls in urban ambient air and street canyons of a Mountainous city in Southwest China.Atmospheric Environment,44(17),2098-2106.
MLA X Pang,et al."Temporal variations of atmospheric carbonyls in urban ambient air and street canyons of a Mountainous city in Southwest China".Atmospheric Environment 44.17(2010):2098-2106.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Temporal variations (878KB) 开放获取使用许可浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[X Pang]的文章
[X Lee]的文章
百度学术
百度学术中相似的文章
[X Pang]的文章
[X Lee]的文章
必应学术
必应学术中相似的文章
[X Pang]的文章
[X Lee]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Temporal variations of atmospheric carbonyls in urban ambient air and street canyons of a Mountainous city in Southwest China.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。