THE BEHAVIOR OF OXYGENATED POLYCYCLIC AROMATIC-HYDROCARBONS ON ATMOSPHERIC SOOT PARTICLES

被引：51
作者：
KAMENS, RM
KARAM, H
GUO, JH
PERRY, JM
STOCKBURGER, L
机构：
[1] TRIANGLE LABS,RES TRIANGLE PK,NC 27709
[2] US EPA,RES TRIANGLE PK,NC 27711
来源：
ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1989年 / 23卷 / 07期
关键词：
Aromatic Compounds--Chemical Reactions - Environmental Testing - Hydrocarbons--Aromatic;
D O I：
10.1021/es00065a007
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Outdoor chamber experiments were conducted to assess the atmospheric stability of oxygenated polycyclic aromatic hydrocarbons (oxy-PAHs) on airborne soot particles. Dilute wood smoke was exposed to midday natural sunlight for periods of 3-4 h in 25-m3 outdoor Teflon film environmental chambers. Aromatic oxygenates such as 9, 10-anthracenedione and cyclopenta[def]phenanthrone appeared to be stable on wood soot particles, while polyaromatic hydrocarbons (PAHs) such as benzo[a]pyrene and benzo[ghi]perylene decayed in sunlight. 1,8-Naphthalic anhydride increased in concentration over the course of the sunlight experiments. In the presence of sunlight and 0.2 ppm photochemically generated ozone, oxy-PAHs declined in concentration and exhibited atmospheric half-lives on wood soot particles that ranged from 80 to 200 min.
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页码：801 / 806
页数：6
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