Estudio comparativo del método Ti-trimétrico y Espectrofotometría UV-visible para la determinación de nitrógeno amoniacal en aguas residuales
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2022
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Universidad de Guayaquil. Facultad de Ciencias Químicas
Resumen
Las aguas residuales son aquellas aguas que contiene un alto nivel de contaminante, físicos, químicos y microbiológicos siendo esto dañino para la salud y el medio ambiente. Uno de los contaminantes importante en las aguas residuales es el nitrógeno amoniacal. El nitrógeno en forma de amoniaco se lo determina nitrógeno amoniacal.
Este está asociado a moléculas orgánicas. La presencia de nitrógeno en los recursos hídrico representa un aumento de acidez, eutrofización y toxicidad en los ecosistemas acuáticos. Afectando así a las especies marítimas en su sobrevivencia, crecimiento y reproductibilidad. Este proyecto pretende evaluar la concentración de nitrógeno amoniacal en aguas residuales. Para lo cual, se contempla el desarrollo y comparación de dos métodos analíticos, tanto el ti- trimétrico y espectrofotometría uv-vis.
El método ti trimétrico o método volumétrico, nos permite buscar la concentración de una sustancia de forma indirecta midiendo el volumen de una disolución de concentración conocida, que se necesita para que reaccione con otra sustancia químicamente equivalente. La espectrofotometría uv-vis, se utiliza para análisis cuantitativos tanto de sustancias químicas, biológicas, orgánicas e inorgánica. Midiendo la cantidad de luz absorbida del compuesto que se encuentra en solución. En esta investigación concluimos que la metodología para la validación es bastante fiable para concentraciones altas de nitrógeno amoniacal.
Wastewater is water that contains a high level of contaminants, physical, chemical and microbiological, this being harmful to health and the environment. One of the important contaminants in wastewater is ammoniacal nitrogen. Nitrogen in the form of ammonia is determined by ammoniacal nitrogen. This is associated with organic molecules. The presence of nitrogen in water resources represents an increase in acidity, eutrophication and toxicity in aquatic ecosystems. Thus affecting maritime species in their survival, growth and reproducibility. This project aims to evaluate the concentration of ammoniacal nitrogen in wastewater. For which, the development and comparison of two analytical methods is contemplated, both ti-trimetric and uv-vis spectrophotometry. The trimetric method or volumetric method allows us to find the concentration of a substance indirectly by measuring the volume of a solution of known concentration, which is needed to react with another chemically equivalent substance. UV-vis spectrophotometry is used for quantitative analysis of chemical, biological, organic and inorganic substances. Measuring the amount of light absorbed by the compound that is in solution. In this investigation we conclude that the validation methodology is quite reliable for high concentrations of ammoniacal nitrogen.
Wastewater is water that contains a high level of contaminants, physical, chemical and microbiological, this being harmful to health and the environment. One of the important contaminants in wastewater is ammoniacal nitrogen. Nitrogen in the form of ammonia is determined by ammoniacal nitrogen. This is associated with organic molecules. The presence of nitrogen in water resources represents an increase in acidity, eutrophication and toxicity in aquatic ecosystems. Thus affecting maritime species in their survival, growth and reproducibility. This project aims to evaluate the concentration of ammoniacal nitrogen in wastewater. For which, the development and comparison of two analytical methods is contemplated, both ti-trimetric and uv-vis spectrophotometry. The trimetric method or volumetric method allows us to find the concentration of a substance indirectly by measuring the volume of a solution of known concentration, which is needed to react with another chemically equivalent substance. UV-vis spectrophotometry is used for quantitative analysis of chemical, biological, organic and inorganic substances. Measuring the amount of light absorbed by the compound that is in solution. In this investigation we conclude that the validation methodology is quite reliable for high concentrations of ammoniacal nitrogen.
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NITRÓGENO AMONIACAL, AGUAS RESIDUALES, VALIDACIÓN