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Source apportionment of ambient pollution levels in Guayaquil, Ecuador
Publicated to:Heliyon. 10 (11): e31613- - 2024-06-15 10(11), DOI: 10.1016/j.heliyon.2024.e31613
Authors: Patino-Aroca, Mario; Hernandez-Paredes, Tomas; Panchana-Lopez, Carlos; Borge, Rafael
Affiliations
Abstract
In this study, the relative contributions of main emission sources to the typical ambient concentrations of key pollutants, such as sulfur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO), and particulate matter (PM10 and PM2.5) in Guayaquil, Ecuador, were investigated. A previous urban emissions inventory for mobile sources was expanded to include other transportation means and main industrial activities using the EMEP/EEA methodology to achieve this objective. The WRF/CALMET/CALPUFF modeling system was used to simulate the annual spatiotemporal distribution of air pollution in the city. According to the model, NO2 concentrations exceed the yearly value and 1-h Ecuadorian standards (40 and 200 mu g/m3) in 1 % and 6 % of the cells of the modeling domain, respectively. These hotspots related to local sources were located in the northwest center of the city. The contributions of the manufacturing sector, thermal power plants, ports, airports, and road traffic were assessed individually, and the results indicated that air quality in the study area was strongly dominated by road traffic. The contributions of NO2, CO, PM10, and PM2.5 at the city level reached 76 %, 96 %, 90 %, and 92 % of the annual mean, respectively. In the case of SO2, the manufacturing sector made the most significant contribution (75 %), followed by thermal power plants (16 %). Furthermore, an analysis at 14 specific locations across Guayaquil identified spatial variations that may support the design and development of an air quality monitoring network for the city.
Keywords
Quality index
Bibliometric impact. Analysis of the contribution and dissemination channel
The work has been published in the journal Heliyon due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2024 there are still no calculated indicators, but in 2023, it was in position 28/134, thus managing to position itself as a Q1 (Primer Cuartil), in the category Multidisciplinary Sciences.
Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.
Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-06-03:
- WoS: 1
- Scopus: 1
Impact and social visibility
Leadership analysis of institutional authors
This work has been carried out with international collaboration, specifically with researchers from: Ecuador.
There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (PATIÑO AROCA, MARIO) and Last Author (BORGE GARCIA, RAFAEL).
the author responsible for correspondence tasks has been BORGE GARCIA, RAFAEL.