Caracterização de folhas de alumínio de uso doméstico por XRF

Abstract

The aluminum metal, due to its property of being infinitely recyclable, can, in each recycling cycle, accumulate undesirable impurities influencing the quality of the final product and, mainly, in aluminum sheets for domestic use that are used indiscriminately by consumers due to lack of knowledge. or incentive from aluminum associations. Over time, that is, with a longer recycling cycle, the amount of impurities the amount of impurities increases and a limit can be reached for secondary aluminum (from scrap) becoming unsuitable for industries. To check these impurities, XRF analysis was used. Five samples were used, four produced in Brazil and one produced in Italy and tripled in a total of fifteen samples. The XRF analysis was performed with the Epsilon 1 equipment from Panalytical. The norm of the Brazilian Association of Technical Standards (ABNT) on aluminum alloy 8011, rich in iron and silicon for the production of aluminum sheets for domestic use, the XRF analysis detected and quantified impurities four to five times greater than the limit tolerable for the alloy. The norm of the National Health Surveillance Agency (Anvisa) on metallic materials in contact with food, all samples were within the tolerable limit, however this norm includes all metals indiscriminately. The European Parliament's 2004 regulation on aluminum in contact with food and beverages from kitchen utensils to machinery for food processing, only the Italian sample exceeded the iron limit. Greater inspection by ANVISA in aluminum foil factories for domestic use is proposed.