3 years ago

+Facile extraction of azide in sartan drugs using magnetized anion-exchange metal-organic frameworks prior to ion chromatography

Quaternary amine functionalized metal-organic framework MIL-101(Cr) (MIL-101(Cr)-NMe3) was prepared as the sorbent for the magnetic solid-phase extraction (MSPE) of azide from sartan drugs before ion chromatography determination. Magnetization of MIL-101-NMe3 were achieved concurrently by adding MIL-101-NMe3 and Fe3O4@SiO2 to the sample solution under ultrasonication. The prepared Fe3O4@SiO2/MIL-101-NMe3 gave the adsorption capacity of 37.5mgg−1. The developed method had a detection limit of 0.24μgL−1 and quantitation limit of 0.79μgL−1 for azide. The relative standard deviations for the intra-day retention time and peak area were 0.52% and 0.36% (n=5), respectively. The developed method was successfully applied for the determination of azide in sartan drugs with the recoveries from 96.5% to 100.5%.

Publisher URL: www.sciencedirect.com/science

DOI: S0021967317310105

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