The development of an ITER scenario will be an optimisation between confinement, stability and pollution by impurities. It will have to take into account the transport of He, with a charge of 2, product of the D-T reaction but also the transport of impurities originating from the plasma edge resulting from the sputtering of the wall and divertor material, i.e. Be (Z = 4), C (Z = 6) and W (Z = 74). The reduction of the divertor power load will also require seeding impurity such as Ar (Z = 18). Clearly, the understanding of the Z dependence of impurity transport is, if not necessary, a beneficial tool for the optimisation of ITER scenarios. In addition, the study of the Z dependence of impurity transport gives insight into mechanisms at play, in particular how micro-instabilities drive particle transport, and highlights the regions influenced by neoclassical transport. Initial results on the Z dependence of impurity transport in H-mode discharge were reported and compared with theoretical predictions. During the 2006-2007 campaign, experiments have specifically focused on clarifying the Z dependence of trace impurity transport in various plasma conditions. L-mode, H-mode discharges have been probed. The aim is to characterise the variation in the Z dependence of impurity transport across the plasma radius, and also to document for which plasma conditions an effect of the neoclassical transport is observed.