Abstract
Port-related activities have a detrimental impact on the air quality both at the point of source and for considerable distances beyond. These activities include, but are not limited to, heavy cargo traffic, onboard, and at-berth emissions. Due to differences in construction, operation, location, and policies at ports, the site-specific air pollution cocktail could result in different human health risks. Thus, monitoring and evaluating such emissions are essential to predict the risk to the community. Environmental agencies often monitor key pollutants (PM2.5, PM10, NO2, SO2), but the volatile organic carbons (VOCs) most often are not, due to its analytical challenging. This study intends to fill that gap and evaluate the VOC emissions caused by activities related to the port of Paranaguá — one of the largest bulk ports in Latin America — by characterizing BTEX concentrations at the port and its surroundings. At seven different sites, passive samplers were used to measure the dispersion of BTEX concentrations throughout the port and around the city at weekly intervals from November 2018 to January 2019. The average and uncertainty of BTEX concentrations (µg m−3) were 0.60 ± 0.43, 5.58 ± 3.80, 3.30 ± 2.41, 4.66 ± 3.67, and 2.82 ± 1.95 for benzene, toluene, ethylbenzene, m- and p-xylene, and o-xylene, respectively. Relationships between toluene and benzene and health risk analysis were used to establish the potential effects of BTEX emissions on the population of the city of Paranaguá. Ratio analysis (T/B, B/T, m,p X/Et, and m,p X/B) indicate that the BTEX levels are mainly from fresh emission sources and that photochemical ageing was at minimum. The cancer risk varied across the sampling trajectory, whereas ethylbenzene represented a moderate cancer risk development for the exposed population in some of the locations. This study provided the necessary baseline data to support policymakers on how to change the circumstances of those currently at risk, putting in place a sustainable operation.
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Acknowledgements
The authors thank the population of Paranaguá for their collaboration to carry out the experimental activities. In the same way, they thank the LACAUT laboratory for their technical support. The authors also wish to thank the LAB AIR laboratory and its staff for their analytical support.
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The authors received financial support from the Coordination for the Improvement of Higher Education Personnel (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior — CAPES) (Finance Code 001).
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Hugo Sarmiento: methodology, investigation, data curation, writing — original draft, writing — review and editing. Sanja Potgieter-Vermaak: conceptualization, data curation, writing — review and editing, visualization. Guilherme C. Borillo: methodology, investigation, writing — review and editing. Ana Flavia L. Godoi: resources, writing — review and editing. Rodrigo A. Reis: resources, writing — review and editing. Carlos I. Yamamoto: resources, writing — review and editing, funding acquisition. Theotonio Pauliquevis: formal analysis, writing — review and editing. Gabriela Polezer: software, writing — review and editing. Ricardo H.M. Godoi: resources, writing — review and editing, funding acquisition.
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Sarmiento, H., Potgieter-Vermaak, S., Borillo, G.C. et al. BTEX profile and health risk at the largest bulk port in Latin America, Paranaguá Port. Environ Sci Pollut Res 30, 63084–63095 (2023). https://doi.org/10.1007/s11356-023-26508-1
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DOI: https://doi.org/10.1007/s11356-023-26508-1