TY - RPRT TI - Determination of benzidine, N-acetylbenzidine, and N,N'-diacetylbenzidine in human urine by capillary gas chromatography/negative ion chemical ionization mass spectrometry. AU - F F Hsu AU - V Lakshmi AU - N Rothman AU - V K Bhatnager AU - R B Hayes AU - R Kashyap AU - D J Parikh AU - S K Kashyap AU - J Turk AU - T Zenser AU - B Davis PY - 1996 DO - 10.1006/abio.1996.0070 UR - https://pubmed.ncbi.nlm.nih.gov/8714596/ ID - 8714596 ER -