Formation of secondary organic aerosols from isoprene and its gas-phase oxidation products through reaction with hydrogen peroxide

被引：294

作者：

Claeys, M

Wang, W

Ion, AC

Kourtchev, I

Gelencsér, A

Maenhaut, W

机构：

[1] Univ Instelling Antwerp, Dept Pharmaceut Sci, Lab Bioorgan Mass Spectrometry, B-2610 Antwerp, Belgium

[2] Univ Veszprem, Hungarian Acad Sci, Air Chem Grp, Dept Earth & Environm Sci, H-8200 Veszprem, Hungary

[3] Univ Ghent, Inst Sci Nucl, Dept Analyt Chem, B-9000 Ghent, Belgium

来源：

ATMOSPHERIC ENVIRONMENT | 2004年 / 38卷 / 25期

关键词：

secondary organic aerosol; biogenic hydrocarbons; isoprene; photo-oxidation;

D O I：

10.1016/j.atmosenv.2004.06.001

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Aerosols produced over forests impair visibility and may affect climate by scattering and absorbing solar radiation and by serving as cloud condensation nuclei. Here, we introduce, to our knowledge, a new route to secondary organic aerosol formation from isoprene and its gas-phase oxidation products, methacrolein and methacrylic acid, namely, multiphase acid-catalysed oxidation with hydrogen peroxide, a perfect analogue to atmospheric sulphate formation. We demonstrate that the formation of major secondary organic aerosol components that are present in natural forest aerosols collected at K-puszta, Hungary, during the summer of 2003, namely, 2-methyltetrols and 2,3-dihydroxymethacrylic acid, can be explained by this mechanism. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：4093 / 4098

页数：6

共 29 条

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