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Availability of Arsenic, Copper, Lead, Thallium, and Zinc to Various Vegetables Grown in Slag-Contaminated Soils

^a Institute of Radiation Protection, GSF-National Research Center for Environment and Health, 85764 Neuherberg, Germany
^b Institute of Ecological Chemistry, GSF-National Research Center for Environment and Health, 85764 Neuherberg, Germany
^c State Environmental Protection Agency of Bavaria, Augsburg, Germany

View larger version (39K): [in a new window]   Fig. 1. Concentration ratios (CRcontrol soil) of As, Cu, Pb, Tl, and Zn (in mg kg-1 dry plant per mg kg-1 air dry soil) for various vegetables grown on the control soil.

View larger version (45K): [in a new window]   Fig. 2. Concentration ratios (CRfractional,slag) of As, Cu, Pb, Tl, and Zn (in mg kg-1 dry plant per mg kg-1 slag in mixture) for various vegetables grown on a red slag–soil mixture 1:1 (filled gray bars) and a black slag–soil mixture 1:1 (filled black bars) as compared with the CRcontrol soil of the metals in the control soil (hatched bars). Error bars are standard deviation (n = 2).

View larger version (46K): [in a new window]   Fig. 3. Relative metal availability (RMA) of As, Cu, Pb, Tl, and Zn for root uptake from slag with respect to its uptake from a control soil for various vegetables. (a) red slag, (b) black slag. The RMA is obtained for each metal and vegetable as RMA = CRfractional,slag/CRcontrol soil.