Per- and polyfluoroalkyl substances (PFAS) in homegrown crops: Accumulation and human risk assessment

relationships were weak, which indicated that other factors (e.g., porewater) may be better measures of bioavailability in homegrown crop accumulation.Regression models, which additionally considered soil characteristics showed limited predictive power (all R 2 ≤ 35%), possibly due to low variability in crop concentrations.Human intake estimations revealed that the PFAS exposure risk via crop consumption was similar nearby and remotely from the plant site, although the contribution to the overall dietary exposure can be relatively large.The tolerable weekly intake was frequently exceeded with respect to fruit and vegetable consumption, thus potential health risks cannot be ruled out.