Characteristics of fine and coarse particles of natural and urban aerosols of Brazil |
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| Institution: | 1. College of Atmospheric Sciences, Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province, Lanzhou University, Lanzhou 730000, China;2. Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu University of Information Technology, Chengdu 610225, China;3. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;1. Indian Institute of Astrophysics, 2nd Block Koramangala, Bangalore 560034, India;2. Center for Environmental Remote Sensing, Chiba University, 1-33 Yayoi-cho, Chiba 263-8522, Japan;3. School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea |
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| Abstract: | Fine and coarse particles have been sampled from 1982 to 1985 in one natural forest seacoast site (Juréia) and five urban-industrial cities (Vitória, Salvador, Porto Alegre, São Paulo and Belo Horizonte). The time variations of concentrations in air and the relative elemental compositions of fine and coarse particle fractions, sampled by Nuclepore stacked filter units (SFU), have been determined gravimetrically and by PIXE analysis, respectively. Enrichment factors and correlation coefficients of the trace elements measured led to unambiguous characterization of soil dust and sea salt, both major aerosol sources that emit coarse particles, and soil dust is also a significant source of fine particles. |
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