Three-dimensional hydroxylated covalent organic frameworks for solid phase extraction of glucocorticoids in environmental water samples
文献类型: 外文期刊
第一作者: Liu, Chuqing
作者: Liu, Chuqing;Xu, Guiju;Wang, Xiaoli;Zhao, Ru-Song;Xu, Guiju;Li, Baoyu;Lin, Jin-Ming
作者机构:
关键词: COF-301; Tetra(4-anilyl)methane; Glucocorticoids; Solid phase extraction; LC-MS; MS; Environmental water
期刊名称:ANALYTICA CHIMICA ACTA ( 影响因子:6.2; 五年影响因子:5.9 )
ISSN: 0003-2670
年卷期: 2023 年 1239 卷
页码:
收录情况: SCI
摘要: It is challenging to achieve the highly sensitive detection of glucocorticoids at ultratrace levels because of the abundant hydrophilic groups in their molecules and the complexity of environmental water sample matrices. Here, a highly crystalline three-dimensional hydroxylated covalent organic frameworks (denoted by COF-301) with tetra(4-anilyl)methane (TAM) and 2,5-dihydroxyterephthalaldehyde (DHTA) as building units was con- structed and proposed as adsorbent for solid phase extraction (SPE) of glucocorticoids. Theoretical studies were conducted to elucidate the potential adsorption mechanism of glucocorticoids on the COF-301. The COF-301 based SPE combined with liquid chromatography-tandem mass spectrometry provides a promising approach for the preconcentration and determination of glucocorticoids residue in water samples. Good linearity with a correlation coefficient exceeding 0.9988, low limits of detection ranging from 0.024 to 0.075 ng L-1 and relative standard deviations below 6.68% were achieved. The proposed method was successfully applied to analyze glucocorticoids residue in actual water samples, demonstrating the prospects of this method for the determi- nation of trace glucocorticoids.
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