Abstract
An extraction method of urinary methamphetamine (MA) using non-chlorinated organic solvents such as hydrocarbons was investigated. MA was extracted most effectively from the urine when petroleum ether containing oleic acid was used. The analytical method is constructed by extraction of MA, followed by derivatization to the trifluoroacetate, which was determined by GC-MS using diphenylmethane as an internal standard. Satisfactory results including the analytical method using GC-MS and recovories of MA from the urine sample were obtained.
