Examinando por Autor "Carmona Castillo, Karina Janet"

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    Determinación de plomo y dureza cálcica en agua de consumo humano de Caja de Agua – San Juan de Lurigancho. Febrero–Marzo 2017
    (Universidad Privada Norbert Wiener, 2018-04-23) Carmona Castillo, Karina Janet; Lizano Gutiérrez, Jesús Víctor
    The study aimed to determine the lead and calcium hardness in 21 samples of human drinking water in the Caja de Agua area of the San Juan de Lurigancho district from February to March 2017. The analysis was performed using Atomic Absorption Spectrophotometry with a graphite furnace. It was found that the average lead concentration in the water was 0.0046 mg Pb/L, with values ranging from 0.001 to 0.019 mg Pb/L. 19.0% of the analyzed samples exceeded the maximum permissible limit of 0.010 mg Pb/L for lead in drinking water, as established by the WHO and the Peruvian Ministry of Health's Regulation on Drinking Water Quality (DS N° 031-2010-SA). The average calcium hardness was 370.86 mg CaCO₃/L, with values ranging from 104.25 to 1173.25 mg CaCO₃/L. 28.57% of the samples exceeded the maximum permissible limit of 500 mg CaCO₃/L, also established by the WHO and the aforementioned Peruvian regulation.