Browsing by Author "Almeida, S. M."
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- An exploratory study for the implementation of the oxidative potential assessment of particulate matter in PortugalPublication . Vicente, C.; Gonçalves, S.; Gamelas ou Carla A. Gamelas, Carla; Almeida, S. M.; Cabo Verde, S.; Bartolomeo, A. R.; Guascito, M. R.; Contini, D.; Canha, N.Particulate matter (PM) is a harmful air pollutant that damages human health by inducing oxidative stress through the excessive generation of reactive oxygen species (ROS). Oxidative Potential (OP) is a proposed metric to measure PM's capacity to generate ROS (Almetwally et al., 2020; Jiang et al., 2019). This study aims to implement the OPDTT assessment methodology at C2TN (Portugal). A set of PM2.5 samples was evaluated using a widely used protocol (Chirizzi et al., 2017), and the results were compared to the values previously obtained at DISTEBA, where the protocol is well established. Moreover, the use of the reference material SRM 1648 (Urban Particulate) as a standard for determining OPDTT was also evaluated. Analyzing a 10 mg.L-1 solution of the reference material, it was possible to conclude that the standard solution presented an average DTT activity (normalized to the mass) value of 27.60 ± 3.79 pmol.min-1.μg-1.
- Assessment of oxidative potential of fine aerosols from different indoor and outdoor environmentsPublication . Gonçalves, S.; Gamelas ou Carla A. Gamelas, Carla; Mendez, S.; Cabo Verde, S.; Almeida, S. M.; Bartolomeo, A.R.; Guascito, M. R.; Contini, D.; Canha, N.
- Biomonitoring PM using transplanted lichens in an urban-industrial area of the Lisbon Metropolitan Area and integration with reference monitoring methodPublication . Gamelas ou Carla A. Gamelas, Carla; Abecasis, L.; Justino, A.; Dionísio, I.; Canha, N.; Kertesz, Z.; Almeida, S. M.
- Characterization of a settled dust event in an urban area affected by industrial activitiesPublication . Gamelas ou Carla A. Gamelas, Carla; Justino, A. R.; Canha, N.; Coutinho, J. T.; Kertesz, Z.; Almeida, S. M.
- Chemical characterization of atmospheric particulate matter and source apportionment in an urban-industrial area of the Lisbon Metropolitan Area (Portugal)Publication . Gamelas ou Carla A. Gamelas, Carla; Canha, N.; Vicente, A.; Alves, C.; Kertesz, Z.; Almeida, S. M.
- Citizens involvement in the assessment of atmospheric contamination in an industrial areaPublication . Justino, A. R.; Abecassis, L.; Gamelas ou Carla A. Gamelas, Carla; Canha, N.; Kertesz, Z.; Almeida, S. M.
- Citizens’ involvement in air biomonitoring with strawberry plantsPublication . Gamelas ou Carla A. Gamelas, Carla; Canha, N.; Justino, A. R.; Nunes, A.; Abecasis, L.; Nunes, S.; Kertesz, Z.; Almeida, S. M.
- Contribution of micro‐PIXE to the characterization of settled dust events in an urban area affected by industrial activitiesPublication . Justino, A. R.; Canha, N.; Gamelas ou Carla A. Gamelas, Carla; Coutinho, J. T.; Kertesz, Z.; Almeida, S. M.This study aimed to identify possible sources of settled dust events that occurred in an urban area nearby an industrial park, which alarmed the local population. Settled dust was collected in January 2019 and its chemical characterization was assessed by micro-PIXE, focusing on a total of 29 elements. Comparison with chemical profiles of particulate matter from different types of environment was conducted, along with the assessment of crustal enrichment factors and Spearman correlations, allowing to understand which sources were contributing to this settled dust event. A nearby industrial area’s influence was identified due to the contents of Fe, Cr and Mn, which are typical tracers of iron and steel industries.
- Exposure to fine aerosols in sleeping environments of Lisbon dwellingsPublication . Mendez, S.; Gamelas ou Carla A. Gamelas, Carla; Almeida, S. M.; Canha, N.
- Impact of residential heating on PM2.5 levels and composition: effects of the energy crisisPublication . Almeida, S. M.; Canha, N.; Gamelas ou Carla A. Gamelas, Carla; Samek, L.; Ryś, A.; Kertész, Z.; Eleftheriadis, K.; Diapouli, E.; Bešlić, I.; Godec, R.