Trazabilidad microbiológica en sitios poco monitoreados y contaminados con arsénico proveniente de fuentes naturales entre los 3100 y 3300 m.s.n.m, en la parroquia de Canchagua, Provincia de Cotopaxi, año 2022.
Water is the foundation of life being a crucial resource for humanity, however, arsenic contamination has led to serious problems since the population uses this resource for human consumption and agricultural use. The objective of this research is to establish a microbiological traceability analysis...
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| Formato: | bachelorThesis |
| Lenguaje: | spa |
| Publicado: |
2022
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| Acceso en línea: | http://repositorio.utc.edu.ec/handle/27000/8575 |
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Agregar Etiqueta | Sumario: | Water is the foundation of life being a crucial resource for humanity, however, arsenic contamination has led to serious problems since the population uses this resource for human consumption and agricultural use. The objective of this research is to establish a microbiological traceability analysis in poorly monitored sites contaminated by arsenic from a natural source at an altitude of 3100 to 3300 m.a.s.l. in the parish of Canchagua, in the Blanco river at an elevation of 3237 m.a.s.l. Its waters arise in the Ilinizas stratovolcano presenting an As contamination of natural origin. The biophysical characterization of the altitudinal floor was carried out in the QGIS 3.18.0 program, with geographic information files (shapefiles). In the Blanco river, a water analysis of the physicochemical parameters was carried out in January and March to determine the concentration of As and the water quality according to Ecuadorian regulations. To establish microbiological traceability, culture media were used to determine and identify the structure and morphology of the possible microorganisms present in the sector. The biophysical characterization of the area helped determine that the presence of As is of natural origin, due to the geological formation of the sector. However, there are factors such as high rainfall, mountainous slopes, soil erosion and a sandy texture that allow arsenic to be easily mobilized by the tributary. In the parameters analyzed and compared with the quality criteria for human consumption (INEN), arsenic and pH exceeded the MPLs in January and March. In the agricultural use quality criteria, in January the parameters that do not meet the MCLs are dissolved oxygen and fecal coliforms; in March, arsenic, manganese, dissolved oxygen, and fecal coliforms exceed the limits established in Ministerial Agreement 097-A. The microbiological traceability shows Gram-negative microorganisms in the form of bacilli that are possibly bacteria of the Psuedomonas genus. These bacteria resist and remove arsenic from the water, which can be used as a possible biotechnology tool for biological arsenic removal treatments. |
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