Remediation of contaminated agricultural soils near a former Pb/Zn smelter in Austria: batch, pot and field experiments.
Metal contaminated crops from contaminated soils are possible hazards for the food chain. The aim of this study was to find practical and cost-effective measures to reduce metal uptake in crops grown on metal contaminated soils near a former metal smelter in Austria. Metal-inefficient cultivars of crop plants commonly grown in the area were investigated in combination with in-situ soil amendments. A laboratory batch experiment using 15 potential amendments was used to select 5 amendments to treat contaminated soil in a pot study using two Barley (Hordeum vulgare L.) cultivars that differed in their ability to accumulate cadmium. Results from this experiment identified 3 of these amendments for use in a field trial. In the pot experiment a reduction in ammonium nitrate extractable Cd (<41%) and Pb (<49%) compared to the controls was measured, with a concurrent reduction of uptake into barley grain (Cd<62%, Pb<68%). In the field extractable fractions of Cd, Pb, and Zn were reduced by up to 96%, 99%, and 99%, respectively in amended soils.
Friesl
W
W
Department of Environmental Research, ARC Seibersdorf research GmbH, A-2444 Seibersdorf, Austria. wolfgang.friesl@arcs.ac.at <wolfgang.friesl@arcs.ac.at>
Friedl
J
J
Platzer
K
K
Horak
O
O
Gerzabek
M H
MH
D000383:Agriculture; D000818:Animals; D001317:Austria; D001673:Biodegradation, Environmental; D002104:Cadmium / Q000032:analysis / Q000633:toxicity; D002119:Calcium Carbonate; D017610:Calcium Compounds; D004787:Environmental Pollution / Q000009:adverse effects; D052918:Environmental Restoration and Remediation / Q000379:methods*; D019015:Geologic Sediments; D001467:Hordeum / Q000378:metabolism; D006801:Humans; D006812:Humic Substances; D007220:Industrial Waste; D007854:Lead / Q000032:analysis / Q000633:toxicity; D008669:Metallurgy; D009835:Oligochaeta; D010087:Oxides; D012987:Soil / Q000032:analysis; D012989:Soil Pollutants / Q000032:analysis / Q000633:toxicity; D013045:Species Specificity; D018675:Toxicity Tests; D015032:Zinc / Q000032:analysis / Q000633:toxicity
D017610:Calcium Compounds; D006812:Humic Substances; D007220:Industrial Waste; D010087:Oxides; D012987:Soil; D012989:Soil Pollutants; D002104:Cadmium; D007854:Lead; C016538:lime; D002119:Calcium Carbonate; D015032:Zinc