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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; Zhou, Zhen; 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.
2016
Source PublicationATMOSPHERIC CHEMISTRY AND PHYSICS
Volume16Issue:4Pages:2631-2640
AbstractKnowledge 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.
Department[Zhang, Guohua; Bi, Xinhui; Han, Bingxue; Lin, Qinhao; Peng, Long; Wang, Xinming; Peng, Ping'an; Sheng, Guoying] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China; [Zhang, Guohua; Bi, Xinhui; Han, Bingxue; Lin, Qinhao; Peng, Long; Wang, Xinming; Peng, Ping'an; Sheng, Guoying] Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Key Lab Environm Resources Utilizat & P, Guangzhou 510640, Guangdong, Peoples R China; [Qiu, Ning] Chinese Acad Sci, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Lin, Qinhao; Peng, Long] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China; [Chen, Duohong] Guangdong Environm Monitoring Ctr, State Environm Protect Key Lab Reg Air Qual Monit, Guangzhou 510308, Guangdong, Peoples R China; [Zhou, Zhen] Jinan Univ, Atmospher Environm Inst Safety & Pollut Control, Guangzhou 510632, Guangdong, Peoples R China ; 边缘海地质
Subject AreaMeteorology & Atmospheric Sciences
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/15602
Collection中科院边缘海地质重点实验室
Corresponding AuthorBi, 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.
Recommended Citation
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.,...&Bi, XH .(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.
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