Diazepam e nordiazepam em plasma: métodos de extração líquido-líquido e em fase sólida no pré-tratamento de amostras para análise cromatográfica em fase líquida

Freire, Ellen Figueiredo, Miranda, Juniella Luiza, Maia, Patrícia Penido, Vieira, Elisabeth Pizzamiglio, Borges, Keyller Bastos, Siqueira, Maria Elisa Pereira Bastos de

Diazepam e nordiazepam em plasma: métodos de extração líquido-líquido e em fase sólida no pré-tratamento de amostras para análise cromatográfica em fase líquida

AUTOR(ES)

Freire, Ellen Figueiredo, Miranda, Juniella Luiza, Maia, Patrícia Penido, Vieira, Elisabeth Pizzamiglio, Borges, Keyller Bastos, Siqueira, Maria Elisa Pereira Bastos de

FONTE

Química Nova

DATA DE PUBLICAÇÃO

2005-10

RESUMO

Analysis of diazepam (DZP) and its active metabolite nordiazepam (NDZP) in plasma is commonly performed in clinical medicine to ensure proper therapeutic effects while minimizing the incidence of toxicity. This study aimed to optimize analytical parameters and compare two pre-treatment techniques, liquid-liquid (LLE) and solid phase extraction (SPE), as well as liquid chromatographic conditions to analyze simultaneously DZP and NDZP in plasma from 20 patients treated with a daily dose of 10 mg. Both techniques showed to be well in line with the international criteria for analytical validation, which permitted to quantify DZP (66.2 - 1148.6 ng mL-1) and NDZP (138.5 - 808.6 ng mL -1) in all samples. The correlation coefficients between SPE and LLE were respectively 0.9729 for DZP and 0.9643 for NDZP.