Novel pathway of SO<sub>2</sub> oxidation in the atmosphere: reactions with monoterpene ozonolysis intermediates  and  secondary organic aerosol

doi:10.5194/acp-18-5549-2018

GSTDTAP > 地球科学

DOI	10.5194/acp-18-5549-2018
	Novel pathway of SO₂ oxidation in the atmosphere: reactions with monoterpene ozonolysis intermediates and secondary organic aerosol
	Jianhuai Ye, Jonathan P. D. Abbatt, and Arthur W. H. Chan
	2018-04-24
发表期刊	Atmospheric Chemistry and Physics
出版年	2018
英文摘要	Ozonolysis of monoterpenes is an important source of atmospheric biogenic secondary organic aerosol (BSOA). While enhanced BSOA formation has been associated with sulfate-rich conditions, the underlying mechanisms remain poorly understood. In this work, the interactions between SO₂ and reactive intermediates from monoterpene ozonolysis were investigated under different humidity conditions (10 % vs. 50 %). Chamber experiments were conducted with ozonolysis of α-pinene or limonene in the presence of SO₂. Limonene SOA formation was enhanced in the presence of SO₂, while no significant changes in SOA yields were observed during α-pinene ozonolysis. Under dry conditions, SO₂ primarily reacted with stabilized Criegee intermediates (sCIs) produced from ozonolysis, but at 50 % RH heterogeneous uptake of SO₂ onto organic aerosol was found to be the dominant sink of SO₂, likely owing to reactions between SO₂ and organic peroxides. This SO₂ loss mechanism to organic peroxides in SOA has not previously been identified in experimental chamber studies. Organosulfates were detected and identified using an electrospray ionization–ion mobility spectrometry–high-resolution time-of-flight mass spectrometer (ESI-IMS-TOF) when SO₂ was present in the experiments. Our results demonstrate the synergistic effects between BSOA formation and SO₂ oxidation through sCI chemistry and SO₂ uptake onto organic aerosol and illustrate the importance of considering the chemistry of organic and sulfur-containing compounds holistically to properly account for their reactive sinks.
领域	地球科学
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引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/287825
专题	地球科学
推荐引用方式 GB/T 7714	Jianhuai Ye, Jonathan P. D. Abbatt, and Arthur W. H. Chan. Novel pathway of SO₂ oxidation in the atmosphere: reactions with monoterpene ozonolysis intermediates and secondary organic aerosol[J]. Atmospheric Chemistry and Physics,2018.
APA	Jianhuai Ye, Jonathan P. D. Abbatt, and Arthur W. H. Chan.(2018).Novel pathway of SO₂ oxidation in the atmosphere: reactions with monoterpene ozonolysis intermediates and secondary organic aerosol.Atmospheric Chemistry and Physics.
MLA	Jianhuai Ye, Jonathan P. D. Abbatt, and Arthur W. H. Chan."Novel pathway of SO₂ oxidation in the atmosphere: reactions with monoterpene ozonolysis intermediates and secondary organic aerosol".Atmospheric Chemistry and Physics (2018).