Lee, Seunghwa Lee, Kang Mi Han, Sang Moon Lee, Hyeon-Jeong Sung, Changmin Min, Hophil Im, Hosub Han, Sang Beom Cha, Sangwon Lee, Jaeick 2024-01-19T11:32:48Z 2024-01-19T11:32:48Z 2022-05-04 2022-08 0013-9351 https://pubs.kist.re.kr/handle/201004/114853 Environmental pollutants (EPOLs), such as phthalates, volatile organic compounds, phenols, parabens, polycyclic aromatic hydrocarbons, pyrethroids, and environmental tobacco smoke, are highly heterogeneous compounds. Recently, attention has been drawn to the assessment of the combinatory effects of multiple EPs. To correlate multiple exposures with potential health implications, advanced comprehensive analytical methods covering multiclass EPOLs are essential. However, because of several technical problems associated with enzyme hydrolysis, simultaneous extraction, and multiresidue liquid chromatography-tandem mass spectrometry analysis, it is difficult to establish a comprehensive method covering a number of EPOLs in a single sample preparation and analytical run. We developed tandem hybrid hydrolysis, modified direct injection, and a comprehensive mobile phase to overcome these technical problems and established a comprehensive analytical method for simultaneous biomonitoring of multiclass EPOLs. Tandem hybrid hydrolysis using beta-glucuronidase and consecutive acid hydrolysis allowed selective hydrolysis of glucuronide-and sulfate-conjugated metabolites without phthalate degradation. The comprehensive mobile phase composed of 0.01% acetic acid and acetonitrile enabled us to simultaneously analyze 86 EPOLs, with good chromatographic behavior and ionization efficiency. Modified direct injection allowed a small amount of sample and simultaneous urinary extraction. The method was validated and applied to 39 urine samples from 19 mother-newborn pairs for multiple exposure assessment. Results showed that BP-3, a general component in sunblock products, and monoethyl phthalate, a metabolite of diethyl phthalate, exhibit a clear positive correlation between mothers and newborns. Therefore, the developed method has potential as a novel analytical tool for long-term, large-scale, and data-rich human biomonitoring of EPOLs. English Academic Press Comprehensive LC-MS/MS method combined with tandem hybrid hydrolysis for multiple exposure assessment of multiclass environmental pollutants Article 10.1016/j.envres.2022.113053 1 Environmental Research, v.211 Environmental Research 211 Y scie scopus 000784336200006 Environmental Sciences Public, Environmental & Occupational Health Environmental Sciences & Ecology Public, Environmental & Occupational Health Article VALIDATION HORMONES SOLID-PHASE EXTRACTION POLYCYCLIC AROMATIC-HYDROCARBONS ENDOCRINE-DISRUPTING CHEMICALS PHTHALATE METABOLITES HUMAN URINE BISPHENOL-A PARABENS PHENOLS Environmental pollutants (EPOLs) Tandem hybrid hydrolysis Comprehensive mobile phase Liquid chromatography-mass spectrometry&nbsp (LC-MS)