Lithogenic and anthropogenic origin of trace elements in surface soils from Amynteo-Ptolemais-Kozani lignite basin
The concentrations of 45 trace elements were determined by ICP-MS in twelve uncultivated surface soil samples inside (S1, S2, S4-S10) and outside (S3, S11, S12) the Amynteo-Ptolemais-Kozani lignite basin, in six surrounding rock samples as well as in a composite fly ash sample. The six rock samples...
| Autores: | , , , , |
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| Tipo de recurso: | otro |
| Fecha de publicación: | 2002 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/209298 |
| Acceso en línea: | http://hdl.handle.net/10261/209298 |
| Access Level: | acceso abierto |
| Palabra clave: | trace elements Soils geochemistry Amynteo Ptolemais Kozani Grecia Greece |
| Sumario: | The concentrations of 45 trace elements were determined by ICP-MS in twelve uncultivated surface soil samples inside (S1, S2, S4-S10) and outside (S3, S11, S12) the Amynteo-Ptolemais-Kozani lignite basin, in six surrounding rock samples as well as in a composite fly ash sample. The six rock samples were chosen to be representative of the surrounding formations of the lignite basin, gneisses, limestones, ophiolites and granites. Equal quantities of fly ash from the four main Power Stations (Agios Dimitrios, Kardia, Ptolemais, Amynteo) were carefully mixed and homogenized to obtain the composite fly ash sample. The enrichment factors, which are the ratio of an element concentration to that of the worldwide average for surface soils, are also determined for all analyzed samples. The concentrations of the elements As, B, Ba, Be, Bi, Cd, Ce, Cs, Cu, Dy, Er, Eu, Ga, Gd, Hf, Hg, Ho, La, Li, Mo, Nb, Nd, Pb, Pr, Rb, Sb, Sc, Sm, Sn, Sr, Ta, Tb, Th, U, V, Y and Zr, are more or less similar to the worldwide surface soils average, with enrichment factors <3.0. Three elements (Ag, Ge and Se) showed enrichment factors >3.0 in all soil samples, Ni in ten soil samples, Cr in seven, Zn in three, Co in two and Win one soil sample. The enrichment of the elements Co and W is mainly attributed to lithogenic (surrounding rocks) influences, while the enrichment of Ge and Se mainly implies anthropogenic influences (intensive lignite exploitation, combustion in Power Stations, fly ash, landfill in external deposits). Both lithogenic and anthropogenic influences are inferred from the enrichment of Ag, Ni, Cr and Zn. |
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