P427 98042774气溶胶粒子的基本特征及在光电无源干扰中的作用=The basic feature of aerosol particles and theapplications to photoelectric passive distur-bance[刊,中]/侯文学(电子工业部第53研究所.辽宁,锦州(121000))∥光电对...P427 98042774气溶胶粒子的基本特征及在光电无源干扰中的作用=The basic feature of aerosol particles and theapplications to photoelectric passive distur-bance[刊,中]/侯文学(电子工业部第53研究所.辽宁,锦州(121000))∥光电对抗与无源干扰.1997,(3).展开更多
The paper calculates and analyzes physical and chemical characteristics of total suspended particles （TSP）, including mass concentration, absorption coefficient, optical refraction index imaginary unit and chemical ...The paper calculates and analyzes physical and chemical characteristics of total suspended particles （TSP）, including mass concentration, absorption coefficient, optical refraction index imaginary unit and chemical composition based on observational data of atmosphere aerosol in Xi＇an and Nanjing from 1997 to 1999. Enrichment characteristic of TSP elements and sources of pollution are discussed via statistical treatment of enrichment factor of elements and correlation analysis. The result shows that aerosol particles exist remarkable differences in physical and chemical. The highest enrichment in TSP is Pb, Zn, S and As, which comes from different kinds of pollution.展开更多
Single particle mass spectrometry has been widely used to determine the size and chemical compositions of at- mospheric aerosols; however, it is still rarely used for the microphysical properties measurement. In this ...Single particle mass spectrometry has been widely used to determine the size and chemical compositions of at- mospheric aerosols; however, it is still rarely used for the microphysical properties measurement. In this study, two methods were developed for determining aerosol effective density by a single particle aerosol mass spectrometer （SPAMS）. Method I retrieved effective density through comparison between measured light scattering intensities and Mie theoretical modelled par- tial scattering cross section. Method Ⅱ coupled a differential mobility analyzer （DMA） with SPAMS to simultaneously deter- mine the electric mobility and vacuum aerodynamic diameter, and thus the effective density. Polystyrene latex spheres, ammo- nium sulfate and sodium nitrate were tested by these methods to help validate their effectiveness for determining the aerosol effective density. This study effectively extends SPAMS measurements to include particle size, chemical composition, light scattering, and effective density, and thus helps us better understand the environment and climate effects of aerosols.展开更多
文摘P427 98042774气溶胶粒子的基本特征及在光电无源干扰中的作用=The basic feature of aerosol particles and theapplications to photoelectric passive distur-bance[刊,中]/侯文学(电子工业部第53研究所.辽宁,锦州(121000))∥光电对抗与无源干扰.1997,(3).
文摘The paper calculates and analyzes physical and chemical characteristics of total suspended particles （TSP）, including mass concentration, absorption coefficient, optical refraction index imaginary unit and chemical composition based on observational data of atmosphere aerosol in Xi＇an and Nanjing from 1997 to 1999. Enrichment characteristic of TSP elements and sources of pollution are discussed via statistical treatment of enrichment factor of elements and correlation analysis. The result shows that aerosol particles exist remarkable differences in physical and chemical. The highest enrichment in TSP is Pb, Zn, S and As, which comes from different kinds of pollution.
基金supported by the"Strategic Priority Research Program(B)"of the Chinese Academy of Sciences(Grant No.XDB05020205)the National Natural Science Foundation of China(Grant No.41405131)the China Postdoctoral Science Foundation(Grant No.2014M550442)
文摘Single particle mass spectrometry has been widely used to determine the size and chemical compositions of at- mospheric aerosols; however, it is still rarely used for the microphysical properties measurement. In this study, two methods were developed for determining aerosol effective density by a single particle aerosol mass spectrometer （SPAMS）. Method I retrieved effective density through comparison between measured light scattering intensities and Mie theoretical modelled par- tial scattering cross section. Method Ⅱ coupled a differential mobility analyzer （DMA） with SPAMS to simultaneously deter- mine the electric mobility and vacuum aerodynamic diameter, and thus the effective density. Polystyrene latex spheres, ammo- nium sulfate and sodium nitrate were tested by these methods to help validate their effectiveness for determining the aerosol effective density. This study effectively extends SPAMS measurements to include particle size, chemical composition, light scattering, and effective density, and thus helps us better understand the environment and climate effects of aerosols.
