Examinando por Autor "Vicente Lujan, Rossana"

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    Concentración de plomo y manganeso en sandias (Citrullus lannatus) expendidas de forma ambulatoria y su relación con el tiempo de exposición al parque automotor en seis sectores del Cercado de Lima, Lima, Perú, mayo 2019
    (Universidad Privada Norbert Wiener, 2020-11-26) Dextre Menacho, Fredy Wilder; Vicente Lujan, Rossana; Lizano Gutiérrez, Jesús Víctor
    The objective was to determine the relationship between the time of exposure to vehicular traffic and the concentration of lead and manganese in "watermelon" (Citrullus lanatus) sold by street vendors in six sectors of Cercado de Lima, Lima, Peru, in May 2019. Method: The Atomic Absorption Spectrophotometry technique was used. The study analyzed lead and manganese in 36 watermelon samples with 15 hours of exposure (starting 6:00 a.m. and ending 9:00 p.m.). Results: For lead, the average was 5.31 ppm, and 50% of the samples exceeded the value of 5.68 ppm. The data deviated from the mean by an average of 1.07 ppm, with a minimum value of 3.38 ppm and a maximum of 7.10 ppm. For manganese, the average was 6.93 ppm, and 50% of the samples exceeded the value of 7.03 ppm. The data deviated from the mean by an average of 0.065 ppm, with a minimum value of 6.01 ppm and a maximum of 8.32 ppm. It is concluded that a direct and positive correlation exists between the time of the fruit's exposure to vehicular traffic and the concentration of lead and manganese, with statistical significance (r=0.705,p=0.000 and r=0.761,p=0.000, respectively). 100% of the samples exceeded the Maximum Permissible Limits (MPL) established by the WHO/FAO/Codex Alimentarius.