Speciation and solubility of copper along a soil contamination gradient

The bonding of copper (Cu) in soil is important for bioavailability of Cu and toxicity towards plants and animals. The hypothesis of the present study is that variations in molecular Cu bonding can explain previously reported variations in soil ecotoxicity along a Cu contamination gradient when parent material and mineralogy are similar. The specific aim is to understand molecular bonding at the different levels of bioavailability, and compare this with results from a sequential extraction