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Uptake selectivity of methanesulfonic acid (MSA) on fine particles over polynya regions of the Ross Sea, Antarctica

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Title
Uptake selectivity of methanesulfonic acid (MSA) on fine particles over polynya regions of the Ross Sea, Antarctica
Other Titles
남극 로스해 폴리냐에서의 가스상 메탄술폰산의 미세입자로의 선택적 흡착
Authors
Yan, Jinpei
Jung, Jinyoung
Zhang, Miming
Bianchi, Federico
Tham, Yee Jun
Xu, Suqing
Lin, Qi
Zhao, Shuhui
Li, Lei
Chen, Liqi
Subject
Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
Issue Date
2020-03
Citation
Yan, Jinpei, et al. 2020. "Uptake selectivity of methanesulfonic acid (MSA) on fine particles over polynya regions of the Ross Sea, Antarctica". ATMOSPHERIC CHEMISTRY AND PHYSICS, 20(5): 3259-3271.
Abstract
The uptake of methanesulfonic acid (MSA) on existing particles is a major route of the particulate MSA formation, however, MSA uptake on different particles is still lacking in knowledge. Characteristics of MSA uptake on different aerosol particles were investigated in polynya (an area of open sea water surrounded by ice) regions of the Ross Sea, Antarctica. Particulate MSA mass concentrations, as well as aerosol population and size distribution, were observed simultaneously for the first time to access the uptake of MSA on different particles. The results show that MSA mass concentration does not always reflect MSA particle population in the marine atmosphere. MSA uptake on aerosol particle increases the particle size and changes aerosol chemical composition, but it does not increase the particle population. The uptake rate of MSA on particles is significantly influenced by aerosol chemical properties. Sea salt particles are beneficial for MSA uptake, as MSA-Na and MSA-Mg particles are abundant in the Na and Mg particles, accounting for 0:43 +- 0:21 and 0:41 +- 0:20 of the total Na and Mg particles, respectively. However, acidic and hydrophobic particles suppress the uptake of MSA, as MSA-EC (elemental carbon) and MSA-SO42- particles account for only 0:24 +- 0:68 and 0:26 0:47 of the total EC and SO42- particles, respectively. The results extend the knowledge of the formation and environmental behavior of MSA in the marine atmosphere.
URI
https://repository.kopri.re.kr/handle/201206/11813
DOI
http://dx.doi.org/10.5194/acp-20-3259-2020
Appears in Collections  
2020-2020, Variability of carbon pump and climate control in the Southern Ocean (20-20) / Park, Jisoo (PE20140)
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