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 PFOS and PFOA, as intermediates in PFAS production, as byproductsor as (bio)degradation products. Therefore, additional monitoring focused not only on PFOS and PFOA,