Abstract
An improved method is described for detecting glucuronide and sulfate conjugates of benzo[ a]pyrene in medium from cell cultures treated with benzo[ a]pyrene. This method is based on a microbore high-performance liquid chromatograph directly coupled to a high-resolution continuous-flow fast atom bombardment mass spectrometer. Sulfate and glucuronide conjugates, as well as some structural isomers of glucuronide conjugates, were fully separated by the reversed-phase microbore high-performance liquid chromatography conditions used in this study. Since the method does not rely on the use of radiolabeled materials, it may be used to detect conjugates of a wide variety of hydrocarbons. The high sensitivity and selectivity of the method were demonstrated by detecting conjugates in the media of cell cultures derived from mice, hamsters and humans.
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