S. Schneider et al., DETERMINATION OF 3,3',4,4'-TETRACHLOROAZOBENZENE IN WATER BY ISOTOPE-DILUTION GAS-CHROMATOGRAPHY HIGH-RESOLUTION MASS-SPECTROMETRY, Chemosphere, 30(1), 1995, pp. 81-87
A methodology, based on gas chromatography/high resolution mass spectr
ometry selected ion monitoring (GC/HRMS SIM) has been developed for th
e determination of 3,3',4,4'-tetrachloro-azobenzene (TCAB), a potentia
l carcinogen, in water. As internal standard we prepared [C-13(12)] la
belled TCAB, from [C-13(6)] 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%. The detection li
mit of TCAB is about 50 fg of TCAB or 5 ppq in 1,000 mL of water.