Determining the microbial and chemical contamination in Ecuador's main rivers
| العنوان: | Determining the microbial and chemical contamination in Ecuador's main rivers |
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| المؤلفون: | Eduardo Tejera, Esteban Tamayo, Laurence Maurice, Dayana Vinueza, António Machado, Valeria Ochoa-Herrera, Lorena Mejía |
| المساهمون: | Géosciences Environnement Toulouse (GET), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Scientific Reports Scientific Reports, 2021, 11, ⟨10.1038/s41598-021-96926-z⟩ Scientific Reports, Vol 11, Iss 1, Pp 1-14 (2021) |
| بيانات النشر: | HAL CCSD, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Hydrology, Multidisciplinary, Environmental microbiology, business.industry, Science, Contamination, Policy and public health in microbiology, Article, Environmental impact, Water resources, Agriculture, [SDU]Sciences of the Universe [physics], Environmental chemistry, Environmental science, Medicine, Sewage treatment, Livestock, Water quality, business |
| الوصف: | One major health issue is the microbial and chemical contamination of natural freshwater, particularly in Latin American countries, such as Ecuador, where it is still lacking wastewater treatment plants. This study analyzed the water quality in twelve rivers of Ecuador (Coastal, Andean, and Amazonian regions). All rivers showed levels of E. coli and total coliforms above the maximum limit according to International and Ecuadorian legislations. The most polluted rivers were Zamora, Esmeraldas and Machángara. Also, E. coli pathotypes were found in six rivers. Several physicochemical and metal parameters were detected in high levels, such as CODTOTAL (in eight rivers), TSS (in six rivers), TS (in two rivers), Al (in nine rivers), Zn (in eight rivers), Pb (in three rivers), Cu (in three rivers), Fe (in two rivers), and Mn (in Machángara River). Our results agree with other studies in Latin America (such as Colombia, Brazil, and Peru) reporting similar contamination in water resources used for agriculture, livestock, and human consumption. Overall, Guayas, Guayllabamba, and Machángara Rivers showed the highest levels of physicochemical parameters (such as CODTOTAL and TSS) and metal concentrations (such as copper, zinc, aluminum, iron, and manganese). Further studies should evaluate contamination sources and public health impact. |
| اللغة: | English |
| تدمد: | 2045-2322 |
| DOI: | 10.1038/s41598-021-96926-z⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9636fbdbe98b911a6d3b52f218c2eb0 https://hal-insu.archives-ouvertes.fr/insu-03661460 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....c9636fbdbe98b911a6d3b52f218c2eb0 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20452322 |
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| DOI: | 10.1038/s41598-021-96926-z⟩ |