Photolysis In The Environment

Two types of photolysis processes occur in aquatic systems direct photolysis and indirect photolysis (Fig. 3.2.5). In direct photolysis, the target contaminant (in this case, the pharmaceutical compound) absorbs a solar photon. In an indirect photolysis mechanism, the target does not need to or is unable to absorb light because another chromophore in the system such as dissolved organic matter acts as a sensitizing species. Direct photolysis of pharmaceuticals is initiated by photon absorption,...