Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.3/1508
Título: The Aethalometer calibration and determination of iron concentration in dust aerosols
Autor: Fialho, Paulo
Freitas, Maria do Carmo
Barata, Filipe
Vieira, Bruno
Hansen, Anthony
Honrath, Richard
Palavras-chave: Aethalometer Calibration
Attenuation Coefficient
Black Carbon
Sahara Dust
INAA
PICO-NARE
Hematite
Iron Oxides
Data: Nov-2006
Editora: Elsevier
Citação: Fialho, P.; Freitas, M.C.; Barata, F.; Vieira, B.; Hansen, A.D.A.; Honrath, R.E. (2006). «The Aethalometer calibration and determination of iron concentration in dust aerossol», "Journal of Aerosol Science", 37(11), 1497-1506.
Resumo: This paper shows the use of the instrumental neutron activation analysis (INAA) technique to calibrate Aethalometer instruments’ response to iron oxides present in Saharan dust aerosol. The five samples selected for this calibration were collected with a seven-wavelength Aethalometer (model AE31) at the summit of Pico mountain (2225 m ASL) in the Azores Islands. These samples correspond to measurements taken between the 31 October and 5 November, 2001. Analysis of these samples by the INAA technique gave a total mass of 14.84 ± 0.70 μg (Fe). Correlation of the analytical results with the optical measurements allowed the determination of the elemental iron calibration constant, KFe (0.234 ±0.022 μm4 m² gˉ¹), which can be used in the determination of iron concentrations from multi-wavelength Aethalometer measurements. As an example of this, we used Aethalometer measurements during the 2001 event to calculate hourly average dust iron, 〈CFe〉, concentrations, which range from 0.00 and 1.77 μg (Fe) mˉ³.
Descrição: Copyright © 2006 Elsevier Ltd. All rights reserved.
Peer review: yes
URI: http://hdl.handle.net/10400.3/1508
ISSN: 0021-8502
Versão do Editor: http://dx.doi.org/doi:10.1016/j.jaerosci.2006.03.002
Aparece nas colecções:DCA - Artigos em Revistas Internacionais / Articles in International Journals

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