2.4. Materials

Liqua-Trol, a control for human urinalysis, was obtained from KOVA International Inc. (Garden Grove, CA, USA). Standards for 2,3,4,5-TBBA, 2-ethylhexyl 2,3,4,5-Tetrabromobenzoate (TBB), and di(2-ethylhexyl) tetrabromophthalate were purchased from AccuStandard, Inc. (New Haven, CT, USA). BPA-d₆ and triclosan-d₃ were obtained from Toronto Research Chemicals Inc. (Toronto, ON, Canada). BPA, TBBPA, and 2,3,5-triiodobenzoic acid (TIBA) were purchased from Sigma-Aldrich (St. Louis, MO, USA). TBBA-¹³C₁₂ was obtained from Cambridge Isotope Laboratories, Inc. (Tewksbury, MA, USA). Triclosan was purchased from United States Pharmacopeia (Rockville, MD, USA).