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| Study on Analysis of Organic Solvent Residues in Cefotaxime Preparation |
| YAN Yuan-yuan,DI Kun |
| Hebei Dichroa Biochemical Pharmaceutical Corporation Ltd.,Shijiazhuang 050000,China |
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Abstract Based on gas chromatography and quartz capillary column, a method for determination of the main residue solvent of acetone and isopropanol in cefotaxime sodium was establishedl with n-propanol as the internal standard materia.PEG-20M flexible fused silica capillary column (30 m × 0.25 mm × 0.33μm) was used as column. The other experimental conditions were carrier gas was nitrogen, its flow rate was 1.14 mL / min and split ratio 1∶20; initial column temperature was 60℃ and holding time was 3 min; heating rate was 10 ℃ / min; endpoint temperature was 170 ℃ and maintain time was 10 min; FID detector temperature was 250 ℃;gasification chamber temperature was 250 ℃. Results show that acetone and isopropyl alcohol in the range of 8 ~ 1 000μg / mL have good linear relationship with r 2 = 0.999 7 (acetone) and r 2 = 0.999 9 (isopropyl alcohol);recovery yield of acetone is 97.7% and RSD = 6.7% (n = 9),recovery yield of isopropanol is 89.6%, RSD = 11.7%,(n = 9). This method is simple, accurate, and suitable for effective control the level of cefotaxime sodium residual solvents.
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