4Weinmann W, Mtiller C, Vogt F, et al. LC-MS-MS analysis of the neuroleptics clozapine, flupentixol, haloperidol, penfluridol, thioridazine, and zuclopenthixol in hair obtained from psychiatric patients[ J]. J Anal Toxicol, 2002, 26 (5) : 303 -307.
5Verweij A M, Hordijk M L, Lipman P J. Liquid ehromatographie-thermospray tandem mass spectrometric quantitative analysis of some drugs with hypnotic, sedative and tranquillising properties in whole blood [ J ]. J Chromatogr Biomed Appl, 1996, 686(1 ) :27-34.