期刊
JOURNAL OF SEPARATION SCIENCE
卷 39, 期 12, 页码 2356-2364出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201600100
关键词
Fluorescence detection; Liquid chromatography; Magnetic solid-phase extraction; Metal-organic frameworks; Polycyclic aromatic hydrocarbons
资金
- National Natural Science Foundation of China [21265004, 21465008]
- Opening Fund of Key Laboratory of Aquatic Product Processing from Ministry of Agriculture of China [NYJG201504]
- Natural Science Foundation from Guangxi Zhuang Autonomous Region [2014GXNSFAA118063, 2015GXNSFAA139024, 2015GXNSFFA139005]
- project of high level innovation team and outstanding scholar in Guangxi colleges and universities
In this work, a magnetic metal-organic framework designated as MIL-100(Fe) was prepared and applied as a magnetic solid-phase extraction sorbent for the determination of trace polycyclic aromatic hydrocarbons in environmental water samples by coupling with high-performance liquid chromatography and fluorescence detection. The magnetic microspheres exhibited large surface areas and high extraction ability, making them excellent candidates as sorbents for enrichment of trace polycyclic aromatic hydrocarbons. Under the optimized experimental conditions, good sensitivity levels were achieved with low detection limits ranging from 32 to 2110 pg/mL and good linearities with correlation coefficients higher than 0.9990 for the investigated 13 polycyclic aromatic hydrocarbons. The proposed method has been validated in the analysis of real water samples with mean recoveries in the range of 81.4-126.9% at four spiked levels and the relative standard deviations in the range of 1.3-17.0%. The magnetic MIL-100(Fe) microspheres were stable enough for 150 extractions without a significant loss of extraction performance.
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