DETERMINATION OF 3,3',4,4'-TETRACHLOROAZOBENZENE IN WATER BY ISOTOPE DILUTION GAS CHROMATOGRAPHY/HIGH RESOLUTION MASS SPECTROMETRY

Article abstract of DOI:10.1016/0045-6535(94)00378-8

A methodology, based on gas chromatography/high resolution mass spectrometry selected ion monitoring (GC/HRMS SIM) has been developed for the determination of 3,3',4,4'-tetrachloro-azobenzene (TCAB), a potential carcinogen, in water. As internal standard we prepared <(13)C12> labelled TCAB, from <(13)C6> labelled benzene. TCAB was extracted from water by hexane followed by a cleanup column chromatography over basic alumina. Recoveries of TCAB range from 80.0-88.3 percent. The detection limit of TCAB is about 50 fg of TCAB or 5 ppq in 1,000 mL of water.