Multielemental evaluation of garbage bags by EDXRF
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Data
2014-09-02
Autores
Almeida, Eduardo de
Cavagis, Alexandre D. M.
Menegario, Amauri Antonio [UNESP]
Nascimento Filho, Virgilio Franco
Título da Revista
ISSN da Revista
Título de Volume
Editor
Taylor & Francis Ltd
Resumo
Garbage bags have been broadly used for collecting household waste in Brazil and worldwide. Many of these bags are made from recycled polymers, and the presence of harmful elements is a matter of concern. In this study, an energy dispersive X-ray fluorescence (EDXRF) approach for direct analysis of garbage bags is proposed. The concentrations of K, Ca, Ti, Cr, Mn, Fe, Ni, Cu, Zn, Br, Rb, Sr and Pb were determined in 14 garbage bags of different brands purchased from local markets in Piracicaba, Sao Paulo State, Brazil. The EDXRF technique proved to be an effective technique for multielemental, environmentally friendly and direct garbage bag monitoring. For most samples, Ca and Ti presented at minor concentration ranges and K, Cr, Mn, Fe, Ni, Cu, Zn and Pb at minor and trace levels. The EDXRF limits of quantification were K: 220; Ca: 112; Ti: 42; Cr: 19; Mn: 13; Fe: 9.2; Ni: 5.7; Cu: 5.3; Zn: 5.2; Br: 12; Rb: 20; Sr: 28 and Pb:17 mu gg(-)(1). The samples had variable thicknesses, with a superficial density variation of 1.5 to 23% among the triplicates. The trueness of the method was checked by analysing the National Institute of Standards and Technology standard reference material SRM2783.
Descrição
Palavras-chave
environmentally friendly analysis, EDXRF, direct analysis, garbage bag, elemental contamination, multielemental analysis
Como citar
International Journal Of Environmental Analytical Chemistry. Abingdon: Taylor & Francis Ltd, v. 94, n. 11, p. 1113-1122, 2014.