Direct measurement of the glucuronide conjugate of 1-hydroxypyrene in human urine by using liquid chromatography with tandem mass spectrometry

J Chromatogr B Analyt Technol Biomed Life Sci. 2008 May 15;867(2):259-63. doi: 10.1016/j.jchromb.2008.04.015. Epub 2008 May 5.

Abstract

To evaluate human exposure to polycyclic aromatic hydrocarbons (PAHs), we developed a rapid, simple and sensitive method for determining 1-hydroxypyrene-glucuronide (1-OHP-G) in human urine. To improve precision, a deuterated glucuronide was used as an internal standard. The method requires only 1 mL of urine. The urine was treated with a mixed-mode anion-exchange and reversed-phase solid-phase extraction cartridge (Oasis MAX). The analytes were analyzed with a C(18) reversed-phase column with a gradient elution, followed by tandem mass spectrometry with electrospray ionization in negative ion mode. The detection limit of 1-OHP-G (corresponding to a signal-to-noise ratio of 3) was 0.13 fmol/injection. Urinary concentrations of 1-OHP-G determined by this method were strongly correlated (r(2)=0.961) with concentrations of 1-hydroxypyrene by conventional HPLC with fluorescence detection.

Publication types

  • Research Support, Non-U.S. Gov't
  • Validation Study

MeSH terms

  • Calibration
  • Chromatography, High Pressure Liquid / methods*
  • Glucuronides / urine*
  • Humans
  • Pyrenes / analysis*
  • Sensitivity and Specificity
  • Spectrometry, Fluorescence
  • Tandem Mass Spectrometry / methods*

Substances

  • Glucuronides
  • Pyrenes
  • 1-hydroxypyrene