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Reduction of Arsenic Uptake by Lettuce with Ferrous Sulfate Applied to Contaminated Soil

Department of Soil Science, The Univ. of Reading, Whiteknights, P.O. Box 233, Reading, RG6 6DW, UK

View larger version (14K): [in a new window]   Fig. 1. Lettuce dry matter (DM) yield (treatment mean, g pot-1) in relation to soil pH and the Fe oxide treatments of soil.

View larger version (18K): [in a new window]   Fig. 2. Relationship between As concentration in lettuce dry matter (mg kg-1) and soil concentration of added Fe oxides (%), for each pot of the treatment combinations F0L0, F1L1, F2L2, and F3L3, and the fitted exponential curve (Eq. [2]).