Magnetic metal-organic frameworks-101 functionalized with graphite-like carbon nitride for the efficient enrichment of glucocorticoids in cosmetics.

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ID: 31017
2019
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Abstract
In this work, magnetic metal-organic frameworks-101 functionalized with graphite-like carbon nitride material (FeO/g-CN/MIL-101) has been simply prepared for the efficient enrichment of glucocorticoids in cosmetics. Due to the introduction of g-CN, the water stability of MIL-101 has been greatly improved. This composite material also showed better selectivity for glucocorticoids than those for polycyclic aromatic hydrocarbons and benzene compounds due to the hydrogen bonding effect with g-CN and the size-matching effect with MIL-101. When the prepared material was used as the sorbents in magnetic solid-phase extraction (MSPE) and coupled with ultra-performance liquid chromatography-mass spectrometry (UPLC-MS/MS), a sensitive MSPE-UPLC-MS/MS method was developed. Under the optimal conditions, the calibration curves were linear over the concentration ranging from 0.01 to 2 μg/L with correlation coefficients (R) between 0.9915 and 0.9995. The limit of detection (LOD) was as low as 2 ng/L with the RSDs lower than 5.5%. The recoveries ranged from 77.3% to 113%. The LOD of glucocorticoids in real samples analysis was improved by nearly three orders of magnitude compared to current literature records. The results indicated that FeO/g-CN/MIL-101 could be used as MSPE extractant to determine glucocorticoids in complex cosmetics matrix.
Reference Key
li2019magneticjournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Li, Yanxia;Chen, Xiaoman;Xia, Ling;Xiao, Xiaohua;Li, Gongke;
Journal journal of chromatography a
Year 2019
DOI
S0021-9673(19)30766-6
URL
Keywords Keywords not found

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