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Phytoremediation of Heavy Metal–Contaminated Soils

Natural Hyperaccumulation versus Chemically Enhanced Phytoextraction

Agriculture and Environment Division, IACR-Rothamsted, Harpenden, Hertfordshire AL5 2JQ, UK

View larger version (30K): [in a new window]   Fig. 1. Removal of Cd (A) and Zn (B) from the French and UK soils by three croppings of T. caerulescens and maize (the latter in combination with EDTA). Data reported are means of four replicates.

View larger version (31K): [in a new window]   Fig. 2. Changes over time in metal concentrations in soil pore water extracted from the maize treatment. Arrows indicate EDTA applications, bars represent standard errors.

View larger version (15K): [in a new window]   Fig. 3. Relationship between the concentrations of total soluble heavy metals, determined by inductively coupled plasma (ICP), and metal–EDTA complexes determined by ion chromatography (IC).