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We observed a rise in the concentrations of 24 PFASs (Σ24PFASs) from 1998 to 2003 accompanied by a decrease every five years from 2003 to 2018. For history PFASs, similar trends were seen for PFOS, whereas PFOA amounts failed to decrease until 2013. For emerging chemical substances, 62 Cl-PFESA showed a similar trend as PFOS, and prenatal visibility to 62 Cl-PFESA might be traced returning to 1998, with a median concentration of 0.411 ng/mL in