Formation of secondary organic aerosols through photooxidation of isoprene

被引：1176

作者：

Claeys, M

Graham, B

Vas, G

Wang, W

Vermeylen, R

Pashynska, V

Cafmeyer, J

Guyon, P

Andreae, MO

Artaxo, P

Maenhaut, W

机构：

[1] Univ Antwerp, Dept Pharmaceut Sci, B-2610 Antwerp, Belgium

[2] Max Planck Inst Chem, Biogeochem Dept, D-55020 Mainz, Germany

[3] CSIRO, Atmospher Res, Aspendale, Vic 3195, Australia

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

[5] Univ Sao Paulo, Inst Phys, BR-05508900 Sao Paulo, Brazil

来源：

SCIENCE | 2004年 / 303卷 / 5661期

关键词：

D O I：

10.1126/science.1092805

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Detailed organic analysis of natural aerosols from the Amazonian rain forest showed considerable quantities of previously unobserved polar organic compounds, which were identified as a mixture of two diastereoisomeric 2-methyltetrols: 2-methylthreitol and 2-methylerythritol. These polyols, which have the isoprene skeleton, can be explained by OH radical-initiated photooxidation of isoprene. They have low vapor pressure, allowing them to condense onto preexisting particles. It is estimated that photooxidation of isoprene results in an annual global production of about 2 teragrams of the polyols, a substantial fraction of the Intergovernmental Panel on Climate Change estimate of between 8 and 40 teragrams per year of secondary organic aerosol from biogenic sources.

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页码：1173 / 1176

页数：4

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