Lead Speciation and Bioavailability in Apatite-Amended Sediments

Figure 2

XANES spectra and LCF of postamendment Chopawamsic Creek sediment. Plots C–E samples were collected from the top 5–8 cm profile and stored under anaerobic conditions. Plots C–E-Top layer samples were collected from the top 0.5 cm profile and stored under anaerobic conditions. Plot C was amended with 1.5% phosphorus, Plot D was unamended, and Plot E was amended with 3% phosphorus. LCF of the spectra are shown as red circles and Pb standards used in the fits are shown for comparison.