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Type: Artigo de periódico
Title: Análise exploratória rápida e não destrutiva (screening) da presença de elementos químicos tóxicos em material escolar por fluorescência de raios x
Title Alternative: Screening investigation of toxic chemical elements in school supplies by x-ray fluorescence
Author: Da-Col, José Augusto
Sanchez, Rafael Ortiz
Terra, Juliana
Bueno, Maria Izabel Maretti Silveira
Abstract: Compulsory in Brazil, toy certification aims to prevent possible risks in toy use. The Brazilian National Institute of Metrology (INMETRO) establishes the maximum concentration of toxic elements (TE) that may be present in toys. This study evaluates the presence of TE in different crayons, gouache and modeling clays using X-ray fluorescence. This technique is fast, has low operating cost and minimum sample pretreatment, resulting in a clean procedure without reagent consumption and waste generation. Bromine (in gouache) and Barium (in crayons) were the only potentially TE identified in the samples studied.
Subject: school supplies
X-ray fluorescence
Editor: Sociedade Brasileira de Química
Rights: aberto
Identifier DOI: 10.1590/S0100-40422013000600023
Date Issue: 1-Jan-2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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