Presence of soluble lead in glazed ceramics typical of Guatemala
DOI:
https://doi.org/10.54495/Rev.Cientifica.v1i1.483Keywords:
presence, soluble lead, glazed ceramics, GuatemalaAbstract
Soluble lead levels were determined in randomly selected samples of fine and coarse glazed pottery from regional centers in the country where most of the typical glazed pottery originates (Jalapa, Totonicapán, and Antigua Guatemala). This study was carried out to determine whether this type of pottery constitutes a source of lead poisoning in Guatemala. To determine the amount of soluble lead present in the different pottery pieces studied, a 4% acetic acid extraction method was used for 24 hours, followed by direct determination of the lead present in the extract by atomic absorption spectrophotometry. The ability of different foods and beverages consumed in the country to solubilize the lead present in the glaze of these pieces was also studied. With the exception of the fine-finished glazed pottery from Antigua Guatemala, all the pieces studied released appreciable quantities of lead, with concentrations well above 7 ppm in the 4% acetic acid extracts, which is the maximum limit established in other countries for glazed pottery used in food preparation and/or preservation. A study of the effect of some foods and beverages on glazed pottery showed that acidic beverages such as household vinegar, Coca-Cola, orange juice, and tomato juice released lead from the glaze sufficient to produce acute poisoning in the case of vinegar and chronic poisoning in the case of the other beverages. The only exception, once again, was fine-finished glazed pottery from Antigua Guatemala.
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Copyright (c) 1983 Delia R. Paniagua de Gudiel, José Héctor Aguilar
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