Influence of Ammonium Sulfate Seed Particle on Optics and Compositions of Toluene Derived Organic Aerosol in Photochemistry

doi:10.3390/atmos11090961

	Influence of Ammonium Sulfate Seed Particle on Optics and Compositions of Toluene Derived Organic Aerosol in Photochemistry
	Lu, Tingting 1; Huang, Mingqiang 1; Zhao, Weixiong 2; Hu, Changjin 2; Gu, Xuejun 2; Zhang, Weijun 2
刊名	ATMOSPHERE
	2020-09-01
卷号	11
关键词	secondary organic aerosol complex refractive index single-scattering albedo brown carbon imidazoles
DOI	10.3390/atmos11090961
通讯作者	Huang, Mingqiang(huangmingqiang@mnnu.edu.cn) ; Zhang, Weijun(wjzhangaiofm@gmail.com)
英文摘要	Aromatic secondary organic aerosol (SOA) particles are known to contribute to radiative forcing and light absorption of atmosphere. However, the complex refractive index (CRI), single-scattering albedo (SSA) and other optical parameters of aromatic SOA are not well understood. SOA generated from photooxidation of toluene with a variety concentration of ammonium sulfate ((NH4)(2)SO4) seed particles in a smog chamber were investigated in the current study. The real part CRI of toluene SOA without seeds derived and based on aerosol albedometer measurements is 1.486 +/- 0.002 at lambda = 470 nm, showing a good agreement with available experimental data, and its SSA was measured to be 0.92 +/- 0.02 at lambda = 470 nm, indicating that the SOA particles without seeds have strong scattering ability. The SSA of SOA formed in the presence of 300 mu g/m(3)(NH4)(2)SO(4)seed was 0.81 +/- 0.02 at lambda = 470 nm, less than the SSA of SOA without seed. SSA of SOA decreased, while the imaginary part of CRI (k) of SOA increased with increasing concentration of (NH4)(2)SO(4)seed, demonstrating that the adsorption capacity of SOA formed in the presence of (NH4)(2)SO(4)seed is enhanced. Different from the carboxyl compounds measured in the SOA without seed, imidazoles with strong chromophores of C=N that are responsible for the light absorption were detected as the principal constituents of SOA formed in the presence of (NH4)(2)SO(4)seed. These would provide valuable information for discussing the optics and components of aromatic SOA in the urban atmosphere containing a high concentration of (NH4)(2)SO(4)fine particles.
资助项目	National Natural Science Foundation of China[41575118] ; National Natural Science Foundation of China[41575126] ; National Natural Science Foundation of China[41305109] ; Key Project of Foundation of Fujian Province of China[2020J06018] ; science and technology project of Minnan Normal University[4201-L11805]
WOS关键词	CHEMICAL-COMPOSITIONS ; REFRACTIVE-INDEX ; CROSS-SECTION ; PHOTOOXIDATION ; GLYOXAL ; OXIDATION ; PRODUCTS ; OH ; 1,3,5-TRIMETHYLBENZENE ; WAVELENGTH
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	MDPI
WOS记录号	WOS:000580685300001
资助机构	National Natural Science Foundation of China ; Key Project of Foundation of Fujian Province of China ; science and technology project of Minnan Normal University
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/104636]
专题	中国科学院合肥物质科学研究院
通讯作者	Huang, Mingqiang; Zhang, Weijun
作者单位	1.Minnan Normal Univ, Coll Chem & Chem Engn & Environm, Fujian Prov Key Lab Modern Analyt Sci & Separat T, Zhangzhou 363000, Peoples R China 2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Lab Atmospher Physicochem, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Lu, Tingting,Huang, Mingqiang,Zhao, Weixiong,et al. Influence of Ammonium Sulfate Seed Particle on Optics and Compositions of Toluene Derived Organic Aerosol in Photochemistry[J]. ATMOSPHERE,2020,11.
APA	Lu, Tingting,Huang, Mingqiang,Zhao, Weixiong,Hu, Changjin,Gu, Xuejun,&Zhang, Weijun.(2020).Influence of Ammonium Sulfate Seed Particle on Optics and Compositions of Toluene Derived Organic Aerosol in Photochemistry.ATMOSPHERE,11.
MLA	Lu, Tingting,et al."Influence of Ammonium Sulfate Seed Particle on Optics and Compositions of Toluene Derived Organic Aerosol in Photochemistry".ATMOSPHERE 11(2020).