Influence of Citrate on Adsorption of Zinc in Soils Academic Article uri icon

abstract

  • Adsorption of zinc to two soils was quantified in the presence of citrate ranging in concentration from 0 to 10 mM/L. For both soils, Zn adsorption increased with increasing citrate up to a concentration of 2mM/L. With increasing citrate concentrations between 2 and 10 mM/L, Zn adsorption increased in one soil (pH 4.8) but decreased in the second (pH 5.8). Adsorption of a Zn-citrate complex is key to the Zn adsorption in both soils. The soil with the higher pH appears to have a significantly lower adsorption capacity for the complex than the soil with pH 4.8. Activity-based adsorption modeling supports these experimental observations. © ASCE.

author list (cited authors)

  • Schwab, A. P., He, Y., & Banks, M. K.

citation count

  • 9

publication date

  • October 2004