摘要：The aliphatic secondary amines react with carbon disulfide and copper ion in the presence of ammonia, and water-insoluble complex is formed. This reaction was applied to screening test for methamphetamine in extract from urine. The procedure is as follows : The sample urine is washed with hexane, and carbon disulfide, copper ion, and ammonia water are added. This mixture is shaken and the copper complex of methamphetamine is extracted with benzene. A yellow coloration of benzene layer suggests the presence of methamphetamine. The benzene is evaporated, and infrared spectrum of the copper complex of methamphetamine is measured. The limit of identification for methamphetamine was 20 μg/10 ml urine by coloration of benzene layer and 0.5 mg/10 ml urine by infrared spectrometry.
关键词：screening test;copper-complex of methamphetamine;urine;infrared spectrum;carbon disulfide and copper ion
