Examinando por Autor "Gonzales León, Lia Gabriela"

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    Determinación de plomo y arsénico en desayunos expendidos en puestos de venta ambulatoria en Cercado de Lima. Periodo junio–julio de 2017
    (Universidad Privada Norbert Wiener, 2018-07-09) Atachagua Bernuy, Shirley Naudy; Gonzales León, Lia Gabriela; Lizano Gutiérrez, Jesús Víctor
    The present research was carried out to evaluate the concentration of lead and arsenic in 120 samples of basic breakfasts consisting of a glass of quinoa and a bread with vegetable omelet, which were sold at street vending stalls in the Cercado de Lima during the period from June to July 2017. The amount of heavy metals was determined by the Atomic Absorption Spectrophotometry method using the Graphite Furnace technique. It should be noted that, for the present research, the sample consisting of a basic breakfast included a glass of quinoa and a bread with vegetable omelet, which were analyzed together. The levels of lead found in the quinoa drink samples showed an average of 13.29 ppb and a standard deviation of 7.36, with a minimum value of 4.425 ppb and a maximum value of 31.652 ppb. The bread with vegetable omelet samples showed an average of 12.05 ppb and a standard deviation of 3.74, with a minimum value of 6.425 ppb and a maximum value of 18.456 ppb. The levels of arsenic in both samples were not detected, probably because they were below the quantification limit of the technique or equipment used. The results of the research indicate that, in the quinoa drink and bread with vegetable omelet samples, the parameters of lead and arsenic did not exceed those indicated in the Codex Alimentarius.