Hygroscopicity of internally mixed aerosol particles containing benzoic acid and inorganic salts

doi:10.1016/j.atmosenv.2012.06.034

CORC > 化学研究所 > 中国科学院化学研究所

	Hygroscopicity of internally mixed aerosol particles containing benzoic acid and inorganic salts
	Shi, Yajun 1,2; Ge, Maofa 1; Wang, Weigang 1
刊名	ATMOSPHERIC ENVIRONMENT
	2012-12-01
卷号	60 页码:9-17
关键词	Hygroscopicity Benzoic Acid H-tdma Internal Mixture Inorganic Salts
ISSN号	1352-2310
DOI	10.1016/j.atmosenv.2012.06.034
英文摘要	The hygroscopic behaviors of benzoic acid (BA) particles and internal mixtures of inorganic salts (sodium chloride and ammonium sulfate) and BA are investigated in the 10-90% RH using the hygroscopicity tandem differential mobility analyzer (H-TDMA) system. Different morphology of BA. NaCl-BA, and (NH4)(2)SO4 BA particles at representative RH is characterized by Transmission Electron Microscopy (TEM). The hygroscopic growth factors (GFs) of BA exhibit a significant reduction in the 75-85% RH, followed by a slight increase at 90% RH. Internally mixed NaCl-BA and (NH4)(2)SO4 BA particles display deliquescence transitions at 70% RH, followed by apparently hampered hygroscopic growth due to the presence of BA. According to the TEM results, the morphology of BA particles and mixed particles show marked change in humidification, which possibly can be attributed to the strong microstructural rearrangement of BA fraction. This significant restructuring is responsible for the GFs change of BA particles and the hygroscopic behaviors transformation of mixed NaCl-BA and (NH4)(2)SO4-BA particles. These results demonstrate that atmospheric BA could significantly influence the hygroscopic properties of inorganic aerosols. (c) 2012 Elsevier Ltd. All rights reserved.
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000309789800002
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/49103]
专题	中国科学院化学研究所
通讯作者	Ge, Maofa
作者单位	1.Chinese Acad Sci, Inst Chem, State Key Lab Struct Chem Unstable & Stable Speci, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Shi, Yajun,Ge, Maofa,Wang, Weigang. Hygroscopicity of internally mixed aerosol particles containing benzoic acid and inorganic salts[J]. ATMOSPHERIC ENVIRONMENT,2012,60:9-17.
APA	Shi, Yajun,Ge, Maofa,&Wang, Weigang.(2012).Hygroscopicity of internally mixed aerosol particles containing benzoic acid and inorganic salts.ATMOSPHERIC ENVIRONMENT,60,9-17.
MLA	Shi, Yajun,et al."Hygroscopicity of internally mixed aerosol particles containing benzoic acid and inorganic salts".ATMOSPHERIC ENVIRONMENT 60(2012):9-17.