AEROSOL FORMATION IN THE PHOTOOXIDATION OF ISOPRENE AND BETA-PINENE

被引：249
|
作者：
PANDIS, SN [1 ]
PAULSON, SE [1 ]
SEINFELD, JH [1 ]
FLAGAN, RC [1 ]
机构：
[1] CALTECH,DEPT ENVIRONM ENGN SCI,PASADENA,CA 91125
来源：
ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS | 1991年 / 25卷 / 5-6期
基金：
美国国家科学基金会;
关键词：
BIOGENIC HYDROCARBONS; AEROSOL PRECURSORS; SMOG CHAMBER; AEROSOL YIELD;
D O I：
10.1016/0960-1686(91)90141-S
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Isoprene and beta-pinene, at concentration levels ranging from a few ppb to a few ppm, were reacted photochemically with NO(x) in the Caltech outdoor smog chamber facility. Aerosol formation from the isoprene photooxidation is found to be negligible even under extreme ambient conditions due to the relatively high vapor pressure of its products. Aerosol carbon yield from the beta-pinene photooxidation is as high as 8% and depends strongly on the initial HC/NO(x) ratio. The average vapor pressure of the beta-pinene aerosol is estimated to be 37 +/- 24 ppt at 31-degrees-C. Monoterpene photooxidation can be a significant source of secondary aerosol in rural environments and in urban areas with extended natural vegetation.
引用
收藏
页码：997 / 1008
页数：12
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