Probing key organic substances driving new particle growth initiated by iodine nucleation in coastal atmosphere

doi:10.5194/acp-2020-345

GSTDTAP > 地球科学

DOI	10.5194/acp-2020-345
	Probing key organic substances driving new particle growth initiated by iodine nucleation in coastal atmosphere
	Yibei Wan, Xiangpeng Huang, Bin Jiang, Binyu Kuang, Manfei Lin, Deming Xia, Yuhong Liao, Jingwen Chen, Jianzhen Yu, and Huan Yu
	2020-04-30
发表期刊	Atmospheric Chemistry and Physics
出版年	2020
英文摘要	Unlike the deep understanding of highly oxygenated organic molecules (HOMs) driving continental new particle formation (NPF), little is known about the organics involved in coastal and open ocean NPF. On the coastline of China we observed intense coastal NPF events initiated by iodine nucleation, but particle growth to cloud condensation nuclei (CCN) sizes was dominated by organic compounds. This article revealed a new group of C_18,30H_hO_oN_n and C_20,24,28,33H_hO_o compounds with specific double bond equivalents and oxygen atom numbers in sub-20 nm coastal iodine new particles by using ultrahigh resolution Fourier transform-ion cyclotron resonance mass spectrometry (FT-ICR-MS). We proposed these compounds are oxygenated or nitrated products of long chain unsaturated fatty acids, fatty alcohols, non-protein amino acids or amino alcohols emitted mutually with iodine from coastal biota or biological-active sea surface. Group contribution method estimated that the addition of −ONO₂, −OH and −C = O groups to the precursors reduced their volatility of by 2~7 orders of magnitude and thus made their products condensable onto iodine new particles in the coastal atmosphere. Non-target MS analysis also provided a list of 440 formulas of iodinated organic compounds in size-resolved aerosol samples during the iodine NPF days, which facilitates the understanding of unknown aerosol chemistry of iodine.
领域	地球科学
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/248867
专题	地球科学
推荐引用方式 GB/T 7714	Yibei Wan, Xiangpeng Huang, Bin Jiang, Binyu Kuang, Manfei Lin, Deming Xia, Yuhong Liao, Jingwen Chen, Jianzhen Yu, and Huan Yu. Probing key organic substances driving new particle growth initiated by iodine nucleation in coastal atmosphere[J]. Atmospheric Chemistry and Physics,2020.
APA	Yibei Wan, Xiangpeng Huang, Bin Jiang, Binyu Kuang, Manfei Lin, Deming Xia, Yuhong Liao, Jingwen Chen, Jianzhen Yu, and Huan Yu.(2020).Probing key organic substances driving new particle growth initiated by iodine nucleation in coastal atmosphere.Atmospheric Chemistry and Physics.
MLA	Yibei Wan, Xiangpeng Huang, Bin Jiang, Binyu Kuang, Manfei Lin, Deming Xia, Yuhong Liao, Jingwen Chen, Jianzhen Yu, and Huan Yu."Probing key organic substances driving new particle growth initiated by iodine nucleation in coastal atmosphere".Atmospheric Chemistry and Physics (2020).