Examinando por Autor "Marcos Villavicencio, Karim Elizabeth"

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    Estudio comparativo de la calidad del agua potable en relación a los niveles de plomo y cadmio en las viviendas del distrito del Cercado de Lima y Chosica en el mes de octubre del año 2021
    (Universidad Privada Norbert Wiener, 2022-07-12) Marcos Villavicencio, Karim Elizabeth; Quinteros Arias, Michell Gianella; Canales Martínez, César Augusto
    This research aimed to determine the quality of drinking water in households in the Cercado de Lima and Chosica districts with respect to their lead and cadmium content. For this purpose, 30 households from the two districts were randomly selected. One-liter drinking water samples were collected in polyethylene bottles, preserved with nitric acid, and then transferred and analyzed at the Corrosion and Protection Institute of the Pontifical Catholic University of Peru. The ICP-MS method was used to determine the presence of total metals, with a focus on lead and cadmium. The results were processed using Excel 19.0 and SPSS Statistics 26. The results indicate that the average concentration of lead was 0.0012000 mg/L and cadmium was 0.0004133 mg/L in the drinking water, and both values did not exceed the maximum permissible limits. However, in the Cercado de Lima district, one out of 15 samples exceeded the levels for both lead and cadmium. It is concluded that while only one of the analyzed samples exceeded the maximum permissible limit and the rest were below the limits, more studies with a larger number of samples should be conducted because contamination is evident.