Determinação de paraquat e glifosato em amostras de Cannabis sativa encaminhadas para exame pericial / Determination of paraquat and glyphosate in Cannabis sativa samples seizured by police department.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

In the present work, two methods were developed and validate, aiming to determinate the herbicides paraquat and glyphosate and his major metabolite AMPA in seizured marijuana samples by the police in Campinas, São Paulo. The determination of herbicides in confiscated samples is necessary and important to alert the real risk of marijuana can offer to the users. There are many reasons that explain the presence of herbicides in marijuana in several countries, including Brazil. Capillary electrophoresis was used to determinate the studied herbicides. A method with direct detection was used to determinate paraquat and indirect detection to determinate glyphosate and AMPA. The developed methods showed good linearity, precision, accuracy, and recovery. Therefore, it can be applied in Forensics labs in Brazil. One hundred and thirty samples were analyzed, and twelve of them result positive for paraquat in several concentrations and three samples showed positive to glyphosate and one of them, detected the presence of AMPA. The values of the contaminants found, can offer a risk to the users, making it necessary new studies to know the real effects that such contaminants can offer to the Cannabis users.

ASSUNTO(S)

maconha ampa eletroforese capilar glyphosate ampa glifosato capillary electrophoresis toxicologia forense marijuana forensic toxicology paraquat cannabis (análise; toxicidade) paraquat

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