“…Because the measured environmental concentrations (MECs) are relatively low, at ng/L to μg/L levels, the determination of MECs requires advanced analytical techniques and expensive analytes, which may limit large‐scale monitoring and the resulting prioritizations in developing countries. As illustrated in Figure 1C and the Supporting Information, Table S1, prioritizations have been primarily conducted in Europe (e.g., United Kingdom, France, German, Switzerland, Spain, Italy, Greece, and Turkey; Alygizakis et al, 2020; Casado‐Martinez et al, 2018; Hinnenkamp et al, 2019; Ibanez et al, 2021; Riva et al, 2015; Sangion & Gramatica, 2016a, 2016b; Schoenaers et al, 2016; Smital et al, 2013; Vergili et al, 2019; Zhou et al, 2019; Zillien et al, 2019), North America (United States and Canada; Deere et al, 2021; Nallani et al, 2016), and East Asia (China, Korea, and Japan; Choi et al, 2021; Guo et al, 2021; He et al, 2020; Li et al, 2019; Park et al, 2018; Yu et al, 2019). The occurrence and distribution of PPCPs in other regions of the world have been poorly studied (despite some attempts; Dos Santos & Nardocci, 2019; Mansour et al, 2016).…”