Sediment water (interface) mobility of metal(loid)s and nutrients under undisturbed conditions and during resuspension.

•1st comparison ex-situ suction based vs. in-situ dialyses based sediment pore water sampling.•16 metal(loid)s and major nutrients in depth profiles at undisturbed sediment water interfaces.•Combined multi-analyte pore water, resuspension and binding form based sediment risk assessment.•Higher release posed by a pristine sediment compared to the potential hazardous materials.