Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.3/1507
Título: Aerosol chemical elemental mass concentration at lower free troposphere
Autor: Freitas, Maria do Carmo
Dionísio, Isabel
Fialho, Paulo
Barata, Filipe
Palavras-chave: Chemical Elements
INAA
Iron/Cesium Aerosol
Aethalometer
PICO-NARE
Data: 25-Abr-2007
Editora: Elsevier
Citação: Freitas, M.D.C.; Dionísio, I.; Fialho, P.; Barata, F. (2007), «Aerosol chemical elemental mass concentration at lower free troposphere», "Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment", 579(1), 507-509. http://dx.doi.org/10.1016/j.nima.2007.04.148.
Resumo: This paper shows the use of Instrumental neutron activation analysis (INAA) technique to determine elemental masses collected by a seven-wavelength Aethalometer instrument at the summit of Pico mountain in the Azorean archipelago, situated in the Central North Atlantic Ocean. Each sample corresponds to air particulate matter measured continuously for periods of approximately 24 h taken from 14th July 2001 through 14th July 2002. The statistical analysis of the coefficients of correlation between all the elements identified, permitted to establish six groups that could potentially be associated with the type of source responsible for the aerosol sampled in the lower free troposphere at the Azorean archipelago. Calculation of the synoptic back trajectories helped to corroborate the use of the iron/cesium relation as a tracer for the Saharan dust aerosol. It was demonstrated that INAA constituted an important tool to identify these events.
Descrição: Proceedings of the 11th Symposium on Radiation Measurements and Applications.
Copyright © 2007 Elsevier B.V. All rights reserved.
Peer review: yes
URI: http://hdl.handle.net/10400.3/1507
ISSN: 0168-9002
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0168900207007012
Aparece nas colecções:DCA - Artigos em Revistas Internacionais / Articles in International Journals

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