Determination of Cocaine and Its Metabolite Ecgonine Methyl Ester in Human Urine by Gas Chromatography
YE Neng-Sheng1, WANG Xiao-Bo1,WANG Ji-Fen2,GU Xue-Xin1*
Chinese Journal of Applied Chemistry . 2010, (10): 1221 -1224 .  DOI: 10.3724/SP.J.1095.2010.90847