A two-dimensional volatility basis set - Part 2: Diagnostics of organic-aerosol evolution

被引：443

作者：

Donahue, N. M. ^{[1
]}

Kroll, J. H. ^{[2
,3
]}

Pandis, S. N. ^{[1
,4
]}

Robinson, A. L. ^{[1
]}

机构：

[1] Carnegie Mellon Univ, Ctr Atmospher Particle Studies, Pittsburgh, PA 15213 USA

[2] MIT, Dept Civil & Environm Engn, Cambridge, MA 02139 USA

[3] MIT, Dept Chem Engn, Cambridge, MA 02139 USA

[4] FORTH, Inst Chem Engn & High Temp Proc, Patras, Greece

来源：

ATMOSPHERIC CHEMISTRY AND PHYSICS | 2012年 / 12卷 / 02期

基金：

美国国家科学基金会; 欧洲研究理事会;

关键词：

CONDENSATION NUCLEI ACTIVATION; ALPHA-PINENE; PHOTOCHEMICAL OXIDATION; EVAPORATION KINETICS; MASS EMISSIONS; DIESEL EXHAUST; SECONDARY; PHASE; OZONOLYSIS; CHEMISTRY;

D O I：

10.5194/acp-12-615-2012

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We discuss the use of a two-dimensional volatility-oxidation space (2-D-VBS) to describe organic-aerosol chemical evolution. The space is built around two coordinates, volatility and the degree of oxidation, both of which can be constrained observationally or specified for known molecules. Earlier work presented the thermodynamics of organics forming the foundation of this 2-D-VBS, allowing us to define the average composition (C, H, and O) of organics, including organic aerosol (OA) based on volatility and oxidation state. Here we discuss how we can analyze experimental data, using the 2-D-VBS to gain fundamental insight into organic-aerosol chemistry. We first present a well-understood "traditional" secondary organic aerosol (SOA) system - SOA from alpha-pinene + ozone, and then turn to two examples of "non-traditional" SOA formation - SOA from wood smoke and dilute diesel-engine emissions. Finally, we discuss the broader implications of this analysis.

引用

收藏

页码：615 / 634

页数：20

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