Analytical method for chloramphenicol and 1,2-dihydroxypropane in medicine or skin care products
An analysis method, the technology of chloramphenicol, which is applied to chloramphenicol and 1 in medicine-skin care products, can solve the problems of amorphous methods and related data reports, etc.
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[0034] Sample source: cosmetics market,
[0035] 1. Enrichment of chloramphenicol: take 4 grams of sample, place it in a separatory funnel, add 50 ml of ether, shake for 5 minutes, let stand for 5 minutes, separate the supernatant-ether soluble matter, and After drying at room temperature, the preparation section (a), namely the enrichment of chloramphenicol, is obtained.
[0036] 2. Enrichment of 1,2-propanediol: add 50-80 milliliters of ether to the above remaining lower layer to wash, discard the washing solution, place in an oven at 150 for 4 hours, and after cooling, the prepared Section (b), ie the enrichment of 1,2-propanediol.
[0037] 3. Chloramphenicol analysis:
[0038] A. High-performance liquid chromatography analysis: the instrument used is Shimadzu LC-3A high-performance liquid chromatography; the detector is UVD-2 ultraviolet detector; chromatographic column: Zorbax-ODS, 0.46 × 25cm; column temperature: 17 ° C; Mobile phase is methanol / water=85 / 15 (V%), 1.0m...
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