The real part of the refractive indices and effective densities for chemically segregated ambient aerosols in Guangzhou measured by a single-particle aerosol mass spectrometer

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 中科院边缘海地质重点实验室

	The real part of the refractive indices and effective densities for chemically segregated ambient aerosols in Guangzhou measured by a single-particle aerosol mass spectrometer
	Zhang, Guohua; Bi, Xinhui; Qiu, Ning; Han, Bingxue; Lin, Qinhao; Peng, Long; Chen, Duohong; Wang, Xinming; Peng, Ping'an; Sheng, Guoying
刊名	ATMOSPHERIC CHEMISTRY AND PHYSICS
	2016
卷号	16 期号:4 页码:2631-2640
通讯作者	Bi, XH (reprint author), Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China. ; Bi, XH (reprint author), Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Key Lab Environm Resources Utilizat & P, Guangzhou 510640, Guangdong, Peoples R China.
中文摘要	Knowledge on the microphysical properties of atmospheric aerosols is essential to better evaluate their radiative forcing. This paper presents an estimate of the real part of the refractive indices (n) and effective densities (rho(eff))of chemically segregated atmospheric aerosols in Guangzhou, China. Vacuum aerodynamic diameter, chemical compositions, and light-scattering intensities of individual particles were simultaneously measured by a single-particle aerosol mass spectrometer (SPAMS) during the fall of 2012. On the basis of Mie theory, n at a wavelength of 532 nm and rho(eff) were estimated for 17 particle types in four categories: organics (OC), elemental carbon (EC), internally mixed EC and OC (ECOC), and Metal-rich. The results indicate the presence of spherical or nearly spherical shapes for the majority of particle types, whose partial scattering cross-section versus sizes were well fitted to Mie theoretical modeling results. While sharing n in a narrow range (1.47-1.53), majority of particle types exhibited a wide range of rho(eff) (0.871.51 g cm(-3)). The OC group is associated with the lowest rho(eff) (0.87-1.07 g cm(-3)), and the Metal-rich group with the highest ones (1.29-1.51 g cm(-3)). It is noteworthy that a specific EC type exhibits a complex scattering curve versus size due to the presence of both compact and irregularly shaped particles. Overall, the results on the detailed relationship be-tween physical and chemical properties benefits future research on the impact of aerosols on visibility and climate.
学科主题	Meteorology & Atmospheric Sciences
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/15602]
专题	南海海洋研究所_中科院边缘海地质重点实验室
推荐引用方式 GB/T 7714	Zhang, Guohua,Bi, Xinhui,Qiu, Ning,et al. The real part of the refractive indices and effective densities for chemically segregated ambient aerosols in Guangzhou measured by a single-particle aerosol mass spectrometer[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2016,16(4):2631-2640.
APA	Zhang, Guohua.,Bi, Xinhui.,Qiu, Ning.,Han, Bingxue.,Lin, Qinhao.,...&Zhou, Zhen.(2016).The real part of the refractive indices and effective densities for chemically segregated ambient aerosols in Guangzhou measured by a single-particle aerosol mass spectrometer.ATMOSPHERIC CHEMISTRY AND PHYSICS,16(4),2631-2640.
MLA	Zhang, Guohua,et al."The real part of the refractive indices and effective densities for chemically segregated ambient aerosols in Guangzhou measured by a single-particle aerosol mass spectrometer".ATMOSPHERIC CHEMISTRY AND PHYSICS 16.4(2016):2631-2640.