Development and validation of DGT passive samplers for the quantification of Ir, Pd, Pt, Rh and Ru: A challenging application in waters impacted by urban activities

Platinum group elements (PGEs) are among the least abundant in continental crust. They have become excellent tracers of anthropogenic activities, particularly due to their use catalytic converters or medical industry. However, quantification environmental matrices is still problematic because low concentrations combined with presence interfering elements. Preconcentration methods therefore necessary measure accurate concentrations. In this study, Ir, Rh, Ru, Pd and Pt was studied depth by focusing on two resins: AG MP-1 (anion exchange) Purolite® S-920 (chelating) aim developing passive Diffusive Gradients Thin films (DGT) samplers as in-situ pre-concentration tools. The characteristics both resins (e.g. adsorption, elution, selectivity, etc.) were diffusion coefficients PGEs different determined. For first time, carcinostatic platinum-based drugs also studied. Better rates percentages adsorption observed for while more selective regard spectral interferents easier elute. resin-dependent, drugs. applicability these DGT dedicated demonstrated field after deployment wastewater treatment plants Northern France which found range from few pg L?1 (Ir, Ru) ng (Pt).