Arsenic content in constructed soils after coal mining in the southern state of Santa Catarina
Keywords:
Pollution, Toxic element, Recovery of degraded areasAbstract
In the southern part of Santa Catarina State has on coal mining exploiting one of its main economic activities. However, the mining practice has been generating serious
environmental damages. Among which the release of trace elements on the environment
has emerging the attention of regulatory agencies, it is the case of arsenic (As). The As is
a metalloid, highly toxic and present in some mining areas. In this context, the main
objective of this study is to determine the arsenic content and calculate the contamination
factor (FC) and the geoaccumulation index (IGEO) of As in five mining recovering area's
soils in Santa Catarina state. The Ar content was analyzed by the acid extraction method
USEPA 3050B and quantify in EAA-FG. Among five coal mining recovering areas in the
carboniferous basin, two spots in Lauro Müller have As content qual to Prevention
Values, in which the FC and IGEO fit in moderate contaminated class. The studied areas
located in Treviso have inferior content of as than Lauro Müller. These findings indicate
the need to specific ecotoxicology studies to coal mining soils in Santa Catarina in order
to discover more details about its impacts on the ecosystem
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