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Uptake of Cesium-137 and Strontium-90 from Contaminated Soil by Three Plant Species; Application to Phytoremediation

^a Environmental and Waste Technology Group, Brookhaven National Lab., Building 830, Upton, NY 11973-5000
^b U.S. Plant, Soil and Nutrition Lab., USDA-ARS, Cornell Univ., Ithaca, NY 14853
^c MSE Technology Applications, P.O. Box 4078, Butte, MT 59702

View larger version (19K): [in a new window]   Fig. 1. Cesium-137 concentrations in plants relative to its concentrations in soil at the phytoremediation test plot at the Hazardous Waste Management Facility. The slope of the regression line is an estimation of concentration ratio (CR).

View larger version (38K): [in a new window]   Fig. 2. Effect of addition of ammonium nitrate solution on concentration ratios of 137Cs in the three plant species tested at the Hazardous Waste Management Facility.

View larger version (18K): [in a new window]   Fig. 3. Strontium-90 concentration in plants relative to its concentration in soil at the Hazardous Waste Management Facility.

View larger version (31K): [in a new window]   Fig. 4. Concentration ratios of 90Sr and 137Cs for the three plant species tested. Each bar represents a measurement of an individual plant and soil set.

View larger version (16K): [in a new window]   Fig. 5. The fraction of 137Cs and 90Sr remaining in soil as a function of time, not accounting for radioactive decay. These curves are based on the concentration ratio (CR) and mass of redroot pigweed determined in this work.