Sorption and Bioavailability of PPCPs in the Environment

It is also recognized that the sorption of hydrophobic organic compounds onto dissolved organic matter can significantly increase the solubility of the compounds under aqueous conditions. The importance of solubility in determining the fate of PPCPs will be discussed in Section 3.3.2. Where available, the sorption data can be htted to the Freundlich equation [Eq. (3.17)] to derive sorption parameters for the matrix  

If the adsorption-desorption relationship is hnear, then n is equal to 1 and Eq. (3.18) would be the same as 

The Kd can in turn be used to compute that is, the distribution coefficient normalized to the percent organic carbon (%OC) present in the sorbent [Eq. (3.20)]  

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