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Representative LC/MS spectra for placenta extracts (4 h). A. TBBPA: RT: 2.1–2.5 min, m/z = 540.34; B. TBBPA-glucuronide: RT: 1.4–1.5 min, m/z = 718.7; OH-TBBPA-sulfate/glucuronide mixed conjugate, m/z = 815.54; C. TBBPA-sulfate: RT: 1.3–1.4 min, m/z = 619.54. In general, the mass of the [M+H]-ion was used for molecular identification.
