We have used Raman microscopy (in confocal mode to carry out depth profiling) to study the distribution and redistribution (by leaching) of the fungicide, Fluorfolpet, FF (5%) in PVC polymer films placticised using various levels of dioctylphthalate [DOP]. Molecular distribution maps both in X-, Y- and Z-directions have been used to demonstrate that, although DOP is not lost on leaching, there was a quantifiable loss of the FF, selectively from the film surface. The loss varied between a few and 25% and reached a maximum at similar to 25% DOP content of the film. This maximum at 20-25% DOP also occurred for the difference in bulk and surface concentrations of DOP. This is considered to be related to a combination of molecular mobilities in the film, driven by the plasticisation (T-g) effects of DOP, and the mutual solubilities of the additives in water and PVC.