Resumo

ECHEVARRIA PADRON, Lázaro; MILIAN DOMINGUEZ, Jorge C.; PEREZ HERNANDEZ, Orestes  e  DELGADO PEREZ, Mario Luis. QUANTIFICATION OF ZINC IN THE POD OF THE DRIED FRUIT OF SAMANEA SAMAN (JACQ.) MERR. Rev. CENIC Cienc. Quím. [online]. 2024, vol.55, pp. 33-51.  Epub 13-Maio-2024. ISSN 2221-2442.

Zinc or zinc is a metallic chemical element, its atomic number is 30 and its symbol Zn, coming from its original name in German: Zink, which derives from Zinken (teeth, spikes), in allusion to the sharp appearance of the calamine mineral, in which this element is abundant. Zinc is a common element, of biological importance and of numerous industrial applications, especially as part of metallic alloys. It is a relatively reactive metal, which has four metastable states and radioactive isotopes. It is one of the least common elements; It is estimated that it is part of the Earth's crust by 0.0005-0.02%. Its main mineral is zinc blende, marmatite or sphalerite. A qualitative analysis was carried out on the dried fruit pod of S. saman by colorimetric technique, in an acidic and alkaline medium where the presence of the mineral in the dried pod could be confirmed, through the different techniques used such as: potassium ferrocyanide, dithizone and methyl violet, a result that later allowed us to quantify the mineral in the pod, yielding a high amount of Zinc that resulted in a representativeness of the element in the pod greater than 50%.

Palavras-chave : analysis; colorimetry; mineral; qualitative; presence.

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