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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

Miko, Slobodan ; Šparica Miko, Martina ; Hasan, Ozren ; Peh, Zoran ; Mesić, Saša, Bukovec, Dragan ; Lead pollution of the Croatian mountain karst soils caused by acid rain deposition ; evidence from geochemical mapping and lead isotopes // Acid rai 2005 ; conference abstracts / Huntova, Iva ; Ostatnicka, Jana ; Dostalova, Zdena et al. (ur.). Prag: Czech Hydrometeorological Institute, 2005. str. 111-111-x

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

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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

Povezanost rada

Geologija