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Analysis of sunscreens and antibiotics in groundwater during the Covid-19 pandemic in the Riviera Maya, Mexico
JACQUELINE COONEY
Melissa Lenczewski
ROSA MARIA LEAL BAUTISTA
Kevin Tucker
Megan Davis
Jasmine Rodriguez
Acceso Abierto
Atribución-NoComercial-SinDerivadas
10.1016/j.scitotenv.2023.164820
GROUNDWATER
TRACERS
COVID
TOURISM
ANTIBIOTICS
SUNSCREEN
MEXICO
Tourism contributes to groundwater pollution, but quantifying its exact impact is challenging due to the presence of multiple pollution sources. However, the COVID-19 pandemic presented a unique opportunity to conduct a natural experiment and assess the influence of tourism on groundwater pollution. One such tourist destination is the Riviera Maya in Quintana Roo, Mexico (specifically Cancun). Here, water contamination occurs due to the addition of sunscreen and antibiotics during aquatic activities like swimming, as well as from sewage. In this study, water samples were collected during the pandemic and when tourists returned to the region. Samples were taken from sinkholes (cenotes), beaches, and wells then tested using liquid chromatography for antibiotics and active ingredients found in sunscreens. The data revealed that contamination levels from specific sunscreens and antibiotics persisted even when tourists were absent, indicating that local residents significantly contribute to groundwater pollution. However, upon the return of tourists, the diversity of sunscreen and antibiotics found increased, suggesting that tourists bring along various compounds from their home regions. During the initial stages of the pandemic, antibiotic concentrations were highest, primarily due to local residents incorrectly using antibiotics to combat COVID-19. Additionally, the research found that tourist sites had the greatest contribution to groundwater pollution, with sunscreen concentration increasing. Furthermore, installation of a wastewater treatment plant decreased overall groundwater pollution. These findings enhance our understanding of the pollution contributed by tourists in relation to other pollution sources.
2023
Artículo
Sci Total Environ. 2023
Inglés
Cooney J, Lenczewski M, Leal-Bautista RM, Tucker K, Davis M, Rodriguez J. Analysis of sunscreens and antibiotics in groundwater during the Covid-19 pandemic in the Riviera Maya, Mexico. Sci Total Environ. 2023 Oct 10;894:164820. doi: 10.1016/j.scitotenv.2023.164820. Epub 2023 Jun 12. PMID: 37315599; PMCID: PMC10259088.
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Versión publicada
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