“…Adriano (2001) compared the affinity of a series of metals to OM and reported that Cu is the metal most strongly complexed with OM. Kornegay et al (1976) found Cu to be immobile in soil with high OM due to the complexation of Cu by OM. Several other researchers noted that Cu in organic soils is held tenaciously by the OM (Gilbert, 1952;Jones, 1967;Gigliotti et al, 2009;He et al, 2011).…”