Carbonyl compounds in the urban environment of Athens, Greece

被引：105
|
作者：
Bakeas, EB [1 ]
Argyris, DI [1 ]
Siskos, PA [1 ]
机构：
[1] Natl & Kapodistrian Univ Athens, Dept Chem, Environm Anal Grp, Analyt Chem Lab, GR-15771 Athens, Greece
来源：
CHEMOSPHERE | 2003年 / 52卷 / 05期
关键词：
aldehydes and ketones; seasonal variation; spatial variation; photochemical production; photochemical reactivity;
D O I：
10.1016/S0045-6535(03)00257-1
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The concentration levels of 15 selected carbonyl compounds in 62 samples were determined at two sites in Athens basin from June to December 2000. Formaldehyde was the most abundant species (0.05-39 mug m(-3)), which comprised from 22% to 37% of the total measured compounds, followed by acetaldehyde (4.32-49 mug m(-3)), acetone/acrolein (0.64198 mug m(-3)) and butanal (0.79-140 mug m(-3)). The mean formaldehyde/acetaldehyde and acetaldehyde/propanal molar ratios were calculated. No significant seasonal differences were observed for all the carbonyls. Photochemical production was found to weigh upon atmospheric levels for 83-93% in summer days, dropping below 33% in the winter. The importance of formaldehyde and acetaldehyde as a source of hydroxyl radicals in Athens was also assessed. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：805 / 813
页数：9
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