RT info:eu-repo/semantics/article
T1 Morphology, mineralogy, and chemistry of atmospheric aerosols nearby an active mining area: Aljustrel mine (sw Portugal)
A1 Barroso, Ana
A1 Mogo, Sandra
A1 Silva, M. Manuela V. G.
A1 Cachorro Revilla, Victoria Eugenia
A1 Frutos Baraja, Ángel Máximo de
K1 Mineral resources
K1 Minas y recursos mineros
K1 Atmospheric aerosols
K1 Aerosoles
K1 Atmósfera
K1 Aire - Contaminación
K1 Alentejo (Portugal)
K1 2501 Ciencias de la Atmósfera
AB Mining activities increase contaminant levels in the environment, so it is crucial to study the particulate matter in these areas to understand the impacts on nearby urban areas and populations. This work was conducted close to the active mine of Aljustrel (Portugal), where black dust deposition is evident. PM10 samples were collected in two periods: 10–17 July and 1–10 November of 2018. Two different techniques were used: SEM-EDX for the individual characterization of the aerosols and ICP-MS to quantify the elemental concentration of 11 elements (Ca, Na, Fe, Mn, As, Cd, Cu, Sb, Pb, and Zn). In this region, the observed PM10 mass concentration was 20 to 47 µg m −3 (July) and 4 to 23 µg m−3 (November), which is lower than the limit of 50 μg m−3 established in the European Directive. The individual characterization of 2006 particles by SEM-EDX shows oxides (17%) and sulfides (10%), while Na, Si, Fe, S, Al, and Cu are the elements with the most representativeness in all the analyzed particles. The ICP-MS results indicate that the daily elemental concentration in the samples collected in July is higher than November, and only As exceeds the limit established for European legislation.
PB MDPI
SN 2073-4433
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/59633
UL https://uvadoc.uva.es/handle/10324/59633
LA eng
NO Atmosphere, 2021, Vol. 12, Nº. 3, 333
NO Producción Científica
DS UVaDOC
RD 24-nov-2024