Rapid determination of carbohydrates in heroin drug seizures using capillary electrophoresis with short-end injection
Anastos, Nicole, Lewis, Simon, Barnett, Neil, Pearson, James and Kirkbride, Paul 2005, Rapid determination of carbohydrates in heroin drug seizures using capillary electrophoresis with short-end injection, Journal of forensic sciences, vol. 50, no. 5, pp. 1039-1043.
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Rapid determination of carbohydrates in heroin drug seizures using capillary electrophoresis with short-end injection
A simple and rapid method for the analysis of carbohydrates in heroin samples by capillary electrophoresis utilizing a borate complexation method is described. Separations were performed using an uncoated fused silica capillary, 50 cm × 50 mm I.D. × 360 mm O.D. with an effective separation length of 9 cm. The system was run at 60°C with an applied voltage of -8 kilovolts. Injection of each sample was for 1 sec at -50 mbar. UV detection was employed with the wavelength set at 195 nm. The background electrolyte consisted of 65 mM borate, pH 12.0. Samples and standards were prepared in the run buffer containing 2 mg/mL of mannose as an internal standard. Under these conditions a test mixture containing glucose, sucrose, lactose, mannitol and mannose as an internal standard was resolved within 5 min. The method was used to determine the concentration of carbohydrates in heroin seizure samples and synthetic heroin samples. The results were in good agreement with the reported values.