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Franco A, Fu W, Trapp S. 2009. Influence of soil pH on the sorption of ionizable chemicals: Modeling advances. Environ Toxicol Chem 28:458–464.

The authors wish to point out an error in the previously printed article: Equations 7 and 11 contained incorrect numbers. The correct equations are as follows:

MATERIALS AND METHODS

  1. Top of page
  2. MATERIALS AND METHODS
  3. RESULTS

Based on Equation 6, we recently developed nonlinear regressions to estimate the KOC of acids (Eqn. 7) and bases (Eqn. 8) from the pKa and log Pn of the molecule [15]:

  • equation image(1)

RESULTS

  1. Top of page
  2. MATERIALS AND METHODS
  3. RESULTS

The mean δopt found can be used to correct the bulk soil pH and replace pHopt in Equation 6:

  • equation image(2)