About the Job: An experienced analytical mass spectrometrist is sought to develop and validate biomarkers of exposures to environmental and dietary carcinogens, and their DNA adducts in cells and human tissues. The research requires derivatization chemistry for tagging biomarkers to enhance analyte detection by LC/MS or GC/MS and mass spectrometric characterization of biomarkers in complex biological matrices. The candidate is expected to work semi-independently in LC/MS development and validation of DNA adduct biomarkers employing triple quadrupole, ion trap and high resolution MS instruments, and GC/MS to measure volatile toxicants in tobacco smoke.