Method for determining effective ingredients in cefalexin and trimethoprim capsules by ASE-HPLC (accelerated solvent extractor and high performance liquid chromatography)
A technology of sporexin and trimethoprim and active ingredients, which is applied in measuring devices, material separation, and analysis of materials, can solve the problems of poor sensitivity of Haemophilus influenzae, and achieve the effects of quality control, accurate quantification, and high detection efficiency
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[0022] A kind of method that ASE-HPLC measures the active ingredient of sphalexin trimethoprim capsule, specifically, is to comprise that described active ingredient is cephalexin and trimethoprim, and this method has included the following steps successively:
[0023] 1) Weigh 1 g of the content of sporexin trimethoprim capsule and place it in a 10mL extraction pool, use 2% formic acid aqueous solution to extract the sample statically at a temperature of 60°C for 3 minutes, repeat the extraction twice, and remove the solvent in the extract after the extraction is completed Evaporate to dryness, transfer the extract to a 20ml volumetric flask, dilute to 20mL with 2% formic acid aqueous solution, draw 1mL into a centrifuge tube with a graphite carbon SPE column, vortex for 2min, centrifuge at 13000r / min for 3min, take the supernatant for high-efficiency liquid phase analysis;
[0024] 2) The parameters are set as follows when the high performance liquid chromatography is analyz...
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