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Acta Pharmaceutica Sinica ; (12): 276-280, 2004.
Artículo en Inglés | WPRIM | ID: wpr-301096

RESUMEN

<p><b>AIM</b>To detect the residual clenbuterol in pork meat and liver using HPLC with Coulometric electrode array system.</p><p><b>METHODS</b>Homogenized meat or liver sample was treated with 1 mol x L(-1) hydrochloric acid and centrifuged, the fat existing in meat or liver tissue was removed by diethyl ether. The pH of the remaining aqueous layer was adjusted to 10.8 +/- 0.2 or 11.6 +/- 0.2 for meat or liver and liquid-liquid extraction with diethyl ether was followed. The ether extract was evaporated to dryness, the residue was dissolved in the mobile phase. The mobile phase A consisted of 50 mmol x L(-1) phosphoric acid-30 mmol x L(-1) triethylamine and was adjusted to pH 4.0 with 2 mol x L(-1) sodium hydroxide solution. The mobile phase B consisted of methanol-acetonitrile (30:45). A mixture of mobile phase A and B (80:20) was used in the method. A four electrode array module was selected for quantitation, the electrode potentials were set at 450, 600, 650 and 680 mV respectively.</p><p><b>RESULTS</b>The two calibration curves for meat and liver showed good linearity between 1.88 - 60.16 ng x g(-1), the detection limit of clenbuterol was 1.2 ng x g(-1).</p><p><b>CONCLUSION</b>This method using HPLC-electrochemical detection is reproducible, and the sensitivity is good enough for the determination of clenbuterol in meat and liver.</p>


Asunto(s)
Animales , Alimentación Animal , Cromatografía Líquida de Alta Presión , Métodos , Clenbuterol , Residuos de Medicamentos , Electroquímica , Métodos , Electrodos , Hígado , Química , Carne , Porcinos
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