Elemental composition and clustering behaviour of α-pinene oxidation products for different oxidation conditions

被引：20

作者：

Praplan, A. P. ^{[1
]}

Schobesberger, S. ^{[1
]}

Bianchi, F. ^{[2
,3
]}

Rissanen, M. P. ^{[1
]}

Ehn, M. ^{[1
]}

Jokinen, T. ^{[1
]}

Junninen, H. ^{[1
]}

Adamov, A. ^{[1
]}

Amorim, A. ^{[4
,5
]}

Dommen, J. ^{[2
]}

Duplissy, J. ^{[6
]}

Hakala, J. ^{[1
]}

Hansel, A. ^{[7
,8
]}

Heinritzi, M. ^{[7
,9
]}

Kangasluoma, J. ^{[1
]}

Kirkby, J. ^{[9
,10
]}

Krapf, M. ^{[2
]}

Kuerten, A.

Lehtipalo, K. ^{[1
]}

Riccobono, F. ^{[2
]}

Rondo, L. ^{[9
]}

Sarnela, N. ^{[1
]}

Simon, M. ^{[9
]}

Tome, A. ^{[4
,5
]}

Troestl, J. ^{[2
]}

Winkler, P. M. ^{[11
]}

Williamson, C. ^{[9
]}

Ye, P. ^{[12
]}

Curtius, J. ^{[9
]}

Baltensperger, U. ^{[2
]}

Donahue, N. M. ^{[12
]}

Kulmala, M. ^{[1
,6
]}

Worsnop, D. R. ^{[1
,13
]}

机构：

[1] Univ Helsinki, Dept Phys, Helsinki 00014, Finland

[2] Paul Scherrer Inst, Lab Atmospher Chem, CH-5232 Villigen, Switzerland

[3] ETH, Inst Atmospher & Climate Sci, CH-8092 Zurich, Switzerland

[4] Univ Lisbon, Lab Syst Instrumentat & Modeling Sci & Technol Sp, P-1749016 Lisbon, Portugal

[5] Univ Beira Interior, P-1749016 Lisbon, Portugal

[6] Univ Helsinki, Helsinki Inst Phys, FIN-00014 Helsinki, Finland

[7] Univ Innsbruck, Inst Ion Phys & Appl Phys, A-6020 Innsbruck, Austria

[8] Ionicon Analyt, A-6020 Innsbruck, Austria

[9] Goethe Univ Frankfurt, Inst Atmospher & Environm Sci, D-60438 Frankfurt, Germany

[10] CERN, CH-1211 Geneva, Switzerland

[11] Univ Vienna, Fac Phys, A-1090 Vienna, Austria

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

[13] Aerodyne Res Inc, Billerica, MA 01821 USA

来源：

ATMOSPHERIC CHEMISTRY AND PHYSICS | 2015年 / 15卷 / 08期

基金：

俄罗斯基础研究基金会; 瑞典研究理事会; 芬兰科学院; 奥地利科学基金会; 美国国家科学基金会; 瑞士国家科学基金会;

关键词：

SECONDARY ORGANIC AEROSOL; CONTROLLED CHEMICAL CONDITIONS; SULFURIC-ACID; PARTICLE FORMATION; ATMOSPHERIC OXIDATION; NUCLEATION; OZONOLYSIS; CHEMISTRY; AMMONIA; PHOTOOXIDATION;

D O I：

10.5194/acp-15-4145-2015

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study presents the difference between oxidised organic compounds formed by alpha-pinene oxidation under various conditions in the CLOUD environmental chamber: (1) pure ozonolysis (in the presence of hydrogen as hydroxyl radical (OH) scavenger) and (2) OH oxidation (initiated by nitrous acid (HONO) photolysis by ultraviolet light) in the absence of ozone. We discuss results from three Atmospheric Pressure interface Time-of-Flight (APi-TOF) mass spectrometers measuring simultaneously the composition of naturally charged as well as neutral species (via chemical ionisation with nitrate). Natural chemical ionisation takes place in the CLOUD chamber and organic oxidised compounds form clusters with nitrate, bisulfate, bisulfate/sulfuric acid clusters, ammonium, and dimethylaminium, or get protonated. The results from this study show that this process is selective for various oxidised organic compounds with low molar mass and ions, so that in order to obtain a comprehensive picture of the elemental composition of oxidation products and their clustering behaviour, several instruments must be used. We compare oxidation products containing 10 and 20 carbon atoms and show that highly oxidised organic compounds are formed in the early stages of the oxidation.

引用

页码：4145 / 4159

页数：15

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