Cocaine content and adulterants in street samples seized in the city of S. Paulo, Brazil

Street cocaine samples (233) seized in the ilegal market of the city of S. Paulo, SP, Brazil were examined. Both cocaine content and the presence of pharmacological active adulterants were determined for each sample. Adulterants were found in only ten samples: lidocaine (8) and procaine (2). Cocaine contents varied from 10 to 964.2 mg/g of powder; 76.82 per cent of the samples analyzed were constituted by no more than 300 mg/g and only 3.86 per cent had more than 800 mg/g of cocaine