Tropospheric aerosols above the thermal inversion layer of Santiago,Chile: Size distribution of elemental concentrations |
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| Institution: | 1. Facultad de Ciencias de la Salud, Universidad Camilo José Cela, Madrid, España;2. Centro Óptico Montero, Madrid, España;3. Departamento de Ciencias Biomédicas (Área de Farmacología), Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, Madrid, España;5. Centro Boston de Optometría, Madrid, España;1. Key Laboratory for Power Machinery and Engineering of M.O.E, Shanghai Jiao Tong University, Shanghai, 200240, China;2. Institute of Eco-Chongming (IEC), Shanghai, 202162, China;3. School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China;4. State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental Sciences, Shanghai, 200233, China;1. State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing 100083, China;2. School of the Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;3. School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China;1. Dipartimento di Scienze Ambientali, Informatica e Statistica, Università Ca’ Foscari Venezia, Dorsoduro 2137, 30123 Venice, Italy;2. Dipartimento di Fisica e Astronomia “Galileo Galilei”, Università degli Studi di Padova, Via Marzolo 8, 35100 Padua, Italy;3. Laboratori Nazionali di Legnaro, Istituto Nazionale di Fisica Nucleare, Viale dell’Università 2, 35020 Legnaro, Italy;1. Department of Building Science, Tsinghua University, Beijing 100084, China;2. Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Beijing 100084, China |
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| Abstract: | This paper reports on elemental concentration distribution versus size of particulate matter under 10.2μm, above the thermal inversion layer in Santiago, Chile. Forty-eight-hour samples were collected with Andersen and Berner cascade impactors. Atomic Absorption Spectrophotometry was used to quantify Mg, Ca, Mn, Fe, Zn, Pb, Ni, Cr and Cd. These last three elements were found under the detection limit of the technique.The concentration of Ca, Fe, Mg and Mn increases as the sizes of particles increase, while the concentration of Pb increases as the sizes of particles decrease.Analysis by enrichment factors using Fe from local soils as reference shows that Mg, Ca and Mn have a natural origin, and Pb and Zn an anthropogenic origin.The principal component analysis indicates that Mg, Ca, Mn and Fe are very probably coming from peripheral soils or dust from unpaved roads and streets; Pb from motor vehicles; and Zn and Cu from industrial emissions. |
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