Multi-Matrix Assessment of Organic UV-Filters in a Major Freshwater Recreational Ecosystem in Central Europe: Spatio-temporal Distribution and Environmental Risk Assessment

Samples were obtained from 17 shoreline locations and include surface water, sediment (dry weight), periphyton, and zebra mussel (Dreissena polymorpha) tissue. Concentrations were determined using a matrix-optimized SPE–UHPLC–MS/MS analytical method.

The dataset further includes calculated sediment–water distribution coefficients (Kd), bioaccumulation factors (BAF), acute risk quotient (RQ) values, mixture toxicity indices (TU_mix), and model outputs from a multiparametric recreational emission model (BalatonUV–Eq) estimating seasonal OUVF inputs during the bathing period. The data support spatio-temporal analysis of recreational contaminant inputs and screening-level environmental risk assessment in shallow freshwater systems.