Quantification of bisphenols in Korean urine using online solid-phase extraction-high-performance liquid chromatography-tandem mass spectrometry.

•Endocrine-disrupting chemicals (ECDs) enter the human body and interfere with the normal functioning of hormones.•The use of alternatives to BPA as an ECD has increased due to growing safety concerns.•Bisphenols were metabolized to glucuronides, and daily exposure levels could be estimated from urine samples.