Please use this identifier to cite or link to this item: http://www.repositorio.cdtn.br:8080/jspui/handle/123456789/485
Title: Mercury speciation in fluorescent lamps by thermal release analysis
Title of periodic: Waste Management Oxford
Authors: Raposo, Cláudio
Windmoeller, Cláudia Carvalhinho
Durão Júnior, Walter Alves
Affiliation: Centro de Desenvolvimento da Tecnologia Nuclear/CDTN, Belo Horizonte, MG, Brasil
Universidade Federal de Minas Gerais/UFMG, Belo Horizonte, MG, Brasil
Universidade Federal de Minas Gerais/UFMG, Belo Horizonte, MG, Brasil
Issue Date: 2003
Keywords: Mercury;fluorescent lamps;chemical state;waste disposal
Abstract: In this work, mercury speciation in phosphorus powder matrices and soda lime glass waste from new and spent fluorescent tamp wastes has been studied by thermo-desorption/atomic absorption spectrometry (TDAAS), X-ray diffraction (XRD), cold vapor-atomic absorption (CV-AAS) and atomic emission spectrometry/inductively coupled plasma (ICP/AES). TDAAS results show the presence of oxidized forms of mercury, i.e., Hg1+ and Hg2, especially in wastes with high mercury concentration. Such forms are mobile, and therefore represent a potential hazard waste material. Glass TD profiles of spent fluorescent lamps suggested the presence of mercury strongly linked to the matrix, which desorbs only at high temperatures.
Access: L
Appears in Collections:Artigo de periódico

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