FIG. 3.

Phospholipid-phosphate biomass in soil microcosms amended with glucose and lead (A), xylene and lead (B), glucose and chromate (C), and xylene and chromate (D). Treatment microcosms received 3,000 μg g⁻¹ of either glucose or xylene with low lead (LPb) at 3,000 μg Pb²⁺ g⁻¹ soil or high lead (HPb) at 10,000 μg g⁻¹, glucose with low chromium at 400 μg Cr⁶⁺ g⁻¹ soil (GLCr) or high chromium at 4,000 μg Cr⁶⁺ g⁻¹ (GHCr), or xylene with low chromium at 10 μg Cr⁶⁺ g⁻¹ soil (XLCr) or high chromium at 18 μg Cr⁶⁺ g⁻¹ (XHCr).