Lead pollution of the Croatian mountain karst soils caused by acid rain deposition ; evidence from geochemical mapping and lead isotopes (CROSBI ID 514696)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Miko, Slobodan ; Šparica Miko, Martina ; Hasan, Ozren ; Peh, Zoran ; Mesić, Saša, Bukovec, Dragan ;
engleski
Lead pollution of the Croatian mountain karst soils caused by acid rain deposition ; evidence from geochemical mapping and lead isotopes
High lead concentrations in soils of Croatian karst occur on the sharp geomorphological boundary where the Mediterranean climate abruptly changes into a cold continental climate and the area affected Pb pollution covers most of the mountain karst region of Croatia. The Gorski kotar region of the Dinaric Alps is one of the most anomalous wet zones, which exhibits the highest mean precipitation values in the mesoscale climatology of the Alpine region. The detected high Pb contents and their spatial distribution in topsoil obtained during the geochemical baseline survey of topsoil in Croatia are in high corelation with precipitation anomalies (Fig 1.). The most striking difference is expressed by Pb in samples taken at altitudes higher than 1000 m above sea level, where most samples have concentrations above 80 mg/kg, which is almost twice the median content of lead (38 mg/kg) in the whole region. Detailed studies of the Pb distribution in the soil profiles showed concentrations of lead in remote regions up to 200 mgkg-1 in the upper 4 cm of the soil profiles. The isotopic ratio 206Pb/207Pb in all topsoil samples (0-10 cm depth), from both remote sites and those close to major roads, has a narrow range from 1.18 to 1.185 despite that samples taken at depths of >25 cm show a much wider range (from 1.21 to 1.32). Roadside and sinkhole soils that are under which are under the direct influence of road waste-waters have 206Pb/207Pb ratios ranging from 1.125 to 1.14. The studied profiles from sinkholes in the areas with highest annual precipitation show that the highest lead concentrations are restricted to the top 4cm of the soil cover.
Karst; topsoil; acid rain; geochemical mapping; lead isotopes
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o prilogu
111-111-x.
2005.
objavljeno
Podaci o matičnoj publikaciji
Acid rai 2005 ; conference abstracts
Huntova, Iva ; Ostatnicka, Jana ; Dostalova, Zdena ; Navratil, Tomaš
Prag: Czech Hydrometeorological Institute
Podaci o skupu
Acid Rain 2005 ; /th International Conference on Acid deposition
poster
12.05.2005-17.05.2005
Prag, Češka Republika