Characterization of Santa Catarina (Brazil) coal with respect to human health and environmental concerns |
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Authors: | L F O Silva M L S Oliveira K M da Boit R B Finkelman |
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Affiliation: | Departmento de Química Orgánica, Facultad de Quiímica, Universidad de Santiago de Compostela, Santiago de Compostela, Spain. felipeqma@yahoo.com.br |
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Abstract: | The current paper presents the concentration, distribution, and modes of occurrence of trace elements of 13 coals from south
Brazil. The samples were collected in the state of Santa Catarina. Chemical analyses and the high ash yields indicate that
all studied coals are rich in mineral matter, with SiO2 and Al2O3 dominating as determined by inductively coupled plasma-atomic emission spectrometry (ICP-AES). Quartz is the main mineral
species and is associated with minor levels of feldspars, kaolinite, hematite, and iron-rich carbonates. The contents of trace
elements, including As, Pb, Cd, Ni, Cr, Mn, Be, V, U, Zn, Li, Cu, Tl, and Ni, in coals were determined. A comparison of ranges
and means of elemental concentrations in Santa Catarina, Brazil, and world coals shows that the ranges of most elements in
Santa Catarina coal are very close to the usual worldwide concentration ranges in coal. |
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Keywords: | Brazil coal mining Health Trace elements The environment |
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