The effects of coexisting Na2SO4 on heterogeneous uptake of NO2 on CaCO3 particles at various RHs

CORC > 化学研究所 > 中国科学院化学研究所 > 分子动态与稳态结构实验室

	The effects of coexisting Na2SO4 on heterogeneous uptake of NO2 on CaCO3 particles at various RHs
	Tan, Fang 1,2; Jing, Bo 1; Tong, Shengrui 1; Ge, Maofa 1,2,3
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2017-05-15
卷号	586 页码:930-938
关键词	Heterogeneous Reactions Multicomponent Aerosols Synergetic Effects
英文摘要	Atmospheric particles can undergo nucleation, coagulation, chemical-aging, dissolution-precipitation or other atmospheric processes, resulting in complex multicomponent aerosols. The coexisting species have potentially important consequences in the heterogeneous reactions of multicomponent aerosol particles with polluted gases, which are still poorly understood. The effect of coexisting Na2SO4 on heterogeneous uptake of NO2 on CaCO3 particles is investigated in a broad RH range. The combination of DRIFTS, Raman, SEM and IC provides qualitative and quantitative information about the formation of nitrate and other surface species. Ca(NO3)(2) and NaNO3 are generated on mixed CaCO3-Na2SO4 particles under dry condition. Both the amount of NO3- formed and the NO3- formation rates for the mixtures can be predicted based on the linear addition of those for pure CaCO3 and Na2SO4 particles under dry condition. The further reaction of Ca(NO3)(2) with Na2SO4 could lead to the formation of crystal NaNO3 and CaSO4 center dot 0.5H(2)O at 30% RH. Coagulation between Ca2+ and SO42- in surface adsorbed water is observed after part conversion of CaCO3 to Ca(NO3)(2), resulting in the formation of CaSO4 center dot 2H(2)O at 80% RH. The amount of NO(3)(-)formed on the mixtures is dramatically enhanced relative to the predictions at 30% and 80% RH. The findings presented here highlight the role of coexisting species in the heterogeneous reactions of trace gases with multi-component aerosols due to the complexity of atmospheric particles. (C) 2017 Elsevier B.V. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/38333]
专题	化学研究所_分子动态与稳态结构实验室
作者单位	1.Chinese Acad Sci, Inst Chem, BNLMS, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, CEUAE, Inst Urban Environm, Xiamen 361021, Peoples R China
推荐引用方式 GB/T 7714	Tan, Fang,Jing, Bo,Tong, Shengrui,et al. The effects of coexisting Na2SO4 on heterogeneous uptake of NO2 on CaCO3 particles at various RHs[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,586:930-938.
APA	Tan, Fang,Jing, Bo,Tong, Shengrui,&Ge, Maofa.(2017).The effects of coexisting Na2SO4 on heterogeneous uptake of NO2 on CaCO3 particles at various RHs.SCIENCE OF THE TOTAL ENVIRONMENT,586,930-938.
MLA	Tan, Fang,et al."The effects of coexisting Na2SO4 on heterogeneous uptake of NO2 on CaCO3 particles at various RHs".SCIENCE OF THE TOTAL ENVIRONMENT 586(2017):930-938.