Determination of High Polymers in Azlocillin Sodium for Injection by Sephadex G-10 Gel Chromatography
2011
OBJECTIVE To develop a simple method for the determination of high polymers in azlocillin sodium for injection.METHODS A SephadexTM G-10 column was used with the mobile phase A of 0.10 mol·L-1 phosphate buffer(adjust to pH 6.8 with NaOH) at a flow rate of 1.5 mL·min-1.And the mobile phase B was pure water,the detection wavelength was 254 nm.RESULTS The calibration curve was linear in the range of 0.001-4.08 mg·mL-1 and the detection limit of high polymers was 0.5 μg·mL-1.The detection potential of high polymers achieved 3 ppm by the method when the dissolved load of azlocillin sodium was 200 mg·mL-1.CONCLUSION The proposed method is simple and reliable.It is applicable for the quality control of azlocillin sodium.
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