Examinando por Autor "Mazuelos Alfaro, Héctor Jesús"

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Acceso abierto
Determinación de arsénico, cadmio y plomo en nueces, almendras y maníes comercializados en el mercado de Caquetá de febrero-julio 2019
(Universidad Privada Norbert Wiener, 2020-12-17) Mazuelos Alfaro, Héctor Jesús; Albornoz Reyes, Willy Jhonatan; Lizano Gutiérrez, Jesús Víctor
The general objective of this study was to quantify Arsenic (As), Cadmium (Cd) and Lead (Pb) in samples of Walnut (Juglans regia), Almond (Prunus dulcis) and Peanut (Arachis hypogaea L.) marketed in the Caquetá market during the period from January to July 2019. 15 samples were taken from 5 different stalls in the Caquetá market. The technique used was Graphite Furnace Atomic Absorption Spectrophotometry for Lead (Pb) and Cadmium (Cd). The average values of each 5 samples of nuts for Lead (Pb) were 0.80 mg / Kg in Nuts, 0.66 mg / Kg in Peanuts and 0.72 mg / Kg in Almonds, reaching the average value of Nuts to the limit, exceeding 6 of 15 samples analyzed in a total percentage of 40% the Maximum Permissible Limits established by MERCOSUR (0.80 mg / Kg), The average values of each 5 samples of nuts for Cadmium (Cd) were 0.09 mg / Kg in Nuts, 0.19 mg / Kg in Peanuts and 0.15 mg / Kg in Almonds, not reaching the average value of Peanuts to the limit, exceeding 4 of 15 samples analyzed the Maximum Permissible Limits established by the Heavy Metals Legislation of Switzerland (0.20 mg/kg), with a total percentage of 26.67%. For Arsenic (As) the technique used was Atomic Absorption Spectrophotometry with a Hydride Generator. The average values for Arsenic (As) were 0.56 mg/kg for Nuts, 0.72 mg/kg for Peanuts and 0.52 mg/kg for Almonds, with no value reaching the Maximum Permissible Limit, with 1 of 15 samples analyzed exceeding the Maximum Permissible Limits of MERCOSUR (0.80 mg/kg) with a total percentage of 6.67%.