Figure 3.

Representative examples of k_i determinations with the k_i model. The upper panel shows a k_i determination for 2.5 nM methyl paraoxon at 37°, while the lower panel shows the k_i determination for 2.5 nM chlorpyrifos oxon at 24°. The open circles represent the empirical data while the solid lines represent the best-fit for the k_i model. The k_i for methyl paraoxon was found to be 8.24 nM⁻¹ h⁻¹, whereas the k_i for chlorpyrifos oxon was 9.08 nM⁻¹ h⁻¹.