title: Effects of nutrient and lime additions in mine site rehabilitation strategies on the accumulation of antimony and arsenic by native Australian plants.
abstract: The effects of nutrient and lime additions on antimony (Sb) and arsenic (As) accumulation by native Australian and naturalised plants growing in two contaminated mine site soils (2,735 mg kg(-1) and 4,517 mg kg(-1) Sb; 826 mg kg(-1) and 1606 As mgkg(-1)) was investigated using a glasshouse pot experiment. The results indicated an increase in soil solution concentrations with nutrient addition in both soils and also with nutrient+lime addition for Sb in one soil. Metalloid concentrations in plant roots were significantly greater than concentrations in above ground plant parts. The metalloid transfer to above ground plant parts from the roots and from the soil was, however, low (ratio of leaf concentration/soil concentration≪1) for all species studied. Eucalyptus michaeliana was the most successful at colonisation with lowest metalloid transfer to above ground plant parts. Addition of nutrients and nutrients+lime to soils, in general, increased plant metalloid accumulation. Relative As accumulation was greater than that of Sb. All the plant species studied were suitable for consideration in the mine soil phytostabilisation strategies but lime additions should be limited and longer term trials also recommended.
authors: School of Environmental and Rural Science, University of New England, Armidale, New South Wales 2351, Australia. Electronic address: swilso24@une.edu.au.
authors: Susan C
authors: SC
authors: Wilson
authors: Calvin D
authors: CD
authors: Leech
authors: Leo
authors: L
authors: Butler
authors: Leanne
authors: L
authors: Lisle
authors: Paul M
authors: PM
authors: Ashley
authors: Peter V
authors: PV
authors: Lockwood
mesh_terms: D000045:Acacia / Q000378:metabolism; D000965:Antimony / Q000378:metabolism*; D001151:Arsenic / Q000378:metabolism*; D001315:Australia; D001673:Biodegradation, Environmental; D017610:Calcium Compounds / Q000494:pharmacology; D031744:Cynodon / Q000378:metabolism; D005052:Eucalyptus / Q000378:metabolism; D064371:Hazardous Waste Sites; D008906:Mining; D009584:Nitrogen / Q000494:pharmacology; D010087:Oxides / Q000494:pharmacology; D010758:Phosphorus / Q000494:pharmacology; D018517:Plant Roots / Q000378:metabolism; D018520:Plant Shoots / Q000378:metabolism; D018547:Plant Stems / Q000378:metabolism; D031785:Poa / Q000378:metabolism; D011188:Potassium / Q000494:pharmacology; D012989:Soil Pollutants / Q000378:metabolism*; D013455:Sulfur / Q000494:pharmacology
chemical_list: D017610:Calcium Compounds; D010087:Oxides; D012989:Soil Pollutants; D010758:Phosphorus; D013455:Sulfur; D000965:Antimony; C016538:lime; D001151:Arsenic; D009584:Nitrogen; D011188:Potassium
keywords: Antimony; Arsenic; Contaminated soil; Phytostabilisation; Plant accumulation