J. Phys. IV France
Volume 107, May 2003
Page(s) 561 - 564

J. Phys. IV France
107 (2003) 561
DOI: 10.1051/jp4:20030365

Geochemical soil and attic dust survey in Idrija, Slovenia

M. Gosar and R. Sajn

Geological Survey of Slovenia, Dimiceva 14, 1000 Ljubljana, Slovenia

By sampling of soil and attic dust in an area of 160 km 2 around the Idrija mercury mine it was established that mercury concentrations in soil exceed the critical values for soil (10 mg/kg) on 19 km 2. The weighted mercury mean for the studied area is 1.3 mg/kg (0.26-973 mg/kg) for soil and 9.7 mg/kg (0.58-1055 mg/kg) for attic dust. The highest ratios between Hg abundances in dust versus soil were found in the most distant localities and on higher altitudes above the sea level. Hg in soil exceeds Hg in attic dust only in localities in which the sources of the metal are tailings or rocks next to atmospheric emission.

© EDP Sciences 2003