Plant uptake and availability of antimony, lead, copper and zinc in oxic and reduced shooting range soil

Autor: Michael W.H. Evangelou, Kerstin Hockmann, Rainer Schulin, Susan Tandy, Björn Studer
Rok vydání: 2018
Předmět:
Zdroj: Environmental Pollution. 238:255-262
ISSN: 0269-7491
DOI: 10.1016/j.envpol.2018.03.014
Popis: Shooting ranges polluted by antimony (Sb), lead (Pb), copper (Cu) and zinc (Zn) are used for animal grazing, thus pose a risk of contaminants entering the food chain. Many of these sites are subject to waterlogging of poorly drained soils. Using field lysimeter experiments, we compared Sb, Pb, Cu and Zn uptake by four common pasture plant species (Lolium perenne, Trifolium repens, Plantago lanceolata and Rumex obtusifolius) growing on a calcareous shooting range soil under waterlogged and drained conditions. To monitor seasonal trends, the same plants were collected at three times over the growing season. Additionally, variations in soil solution concentrations were monitored at three depths over the experiment. Under reducing conditions, soluble Sb concentrations dropped from ∼50 μg L−1 to ∼10 μg L−1, which was attributed to the reduction of Sb(V) to Sb(III) and the higher retention of the trivalent species by the soil matrix. Shoot Sb concentrations differed by a factor of 60 between plant species, but remained at levels
Databáze: OpenAIRE