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Long-Term Study of Antibiotic Presence in Ebro River Basin (Spain): Identification of the Emission Sources

Abstract : Water monitoring is key to determining the presence of potentially hazardous substances related to urban activities and intensive farming. This research aimed to perform a long-term (four years) quantitative monitoring of selected antibiotics (azithromycin, enrofloxacin, trimethoprim and sulfadiazine) both in rivers and wastewaters belonging to the Ebro River basin (North of Spain). The target antibiotics were chosen on the basis of a preliminary multispecies screening. The analysis of the antibiotics was carried out by LC-MS/MS on wastewater-treatment plant (WWTP) effluent, effluents of a slaughterhouse and hospital, rivers downstream and upstream of these WWTPs, and rivers close to extensive farming areas. The ANOVA test was performed to study the significant differences between the points exposed to concrete emission sources and antibiotic concentration. The monitoring, carried out from 2018 to 2020, has been essential to illustrating the presence of the most abundant antibiotics that were detected in the Ebro River basin. Enrofloxacin has appeared in river waters in significant concentrations, especially near intensive farming, meanwhile azithromycin has been frequently detected in wastewaters.
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Submitted on : Tuesday, April 26, 2022 - 9:43:39 AM
Last modification on : Wednesday, April 27, 2022 - 3:35:41 AM

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Samuel Moles, Sebastia Gozzo, María Ormad, Rosa Mosteo, Jairo Gómez, et al.. Long-Term Study of Antibiotic Presence in Ebro River Basin (Spain): Identification of the Emission Sources. Water, MDPI, 2022, 14, pp.1033. ⟨10.3390/w14071033⟩. ⟨hal-03651827⟩

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