Among these compounds, perfluorooctane sulfonic acid (PFOS)and perfluorooctanoic acid (PFOA) have received the most attention for many years, due to their adverse effects on human health.However, more recently, a range of other PFAS received increasing attention because they are produced as alternatives for PFOSand PFOA, as intermediates in PFAS production, as by-productsor as (bio)degradation products. Therefore, additional monitor-ing focused not only on PFOS and PFOA,