Examinando por Autor "Velazque Leiva, Miguel Angel"

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    Determinación de arsénico, cadmio y plomo en barras de chocolate adquiridas en el centro comercial Polvos Azules de Lima Metropolitana en el periodo enero-febrero 2016
    (Universidad Privada Norbert Wiener, 2017) Velazque Leiva, Miguel Angel; Hernández Aguilar, Manuel Gregorio
    The purpose of this thesis is to determine the concentrations of Arsenic, Cadmium and Lead in chocolate bars purchased at the Polvos Azules Shopping Center in Metropolitan Lima. A collection of chocolate brands sold at the Polvos Azules Shopping Center in Metropolitan Lima was carried out, having a total of 10 samples, the analyzes were performed using the atomic absorption spectrophotometry method by hydride generator for Arsenic and by graphite furnace for Cadmium and Lead. Arsenic concentrations ranged from 0.21 mg / kg to 0.47 mg / kg with an average of 0.30 mg / kg, Cadmium concentrations ranged from 0.21 mg / kg to 0.57 mg / kg with an average of 0.34 mg / kg and Lead concentrations ranged from 0.15 mg / kg to 0.28 mg / kg with an average of 0.20 mg / kg. It is concluded that 100% of the chocolate bar samples purchased at the Polvos Azules shopping center in Metropolitan Lima during the period January-February 2016 contained concentrations of arsenic, cadmium, and lead; and did not exceed the maximum permissible concentration established by the Codex Alimentarius for each of these.