期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 122, 期 -, 页码 331-336出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2013.11.050
关键词
Magnetic nanocomposites; Rutin; Solid-phase extraction; UV-visible spectrophotometry
类别
资金
- National Natural Science Foundation of China [21375117, 21155001]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Foundation of the Excellence Science and Technology Invention Team in Yangzhou University
- Graduate Innovation Project Foundation of Jiangsu province [CXLX13_895]
In this paper, carboxymethyl-hydroxypropyl-beta-cyclodextrin polymer modified magnetic particles Fe3O4 (CM-HP-beta-CDCP-MNPs) were prepared and applied to magnetic solid phase extraction of rutin combined with UV-visible spectrometry detection. The synthesized magnetic particles were characterized by element analysis, Fourier transform infrared spectra, thermal gravimetric analysis, and transmission electron microscopy. Several variables affecting the extraction and desorption of rutin such as pH, the amount of adsorbent, the type and volume of eluent, extraction and desorption time, and temperature were investigated. The maximum adsorption capacity was 67.0 mg g(-1) for rutin with the equilibrium time of 30 min at room temperature, and the adsorbent could be reused for 10 times. A calibration curve was linear in the range of 0.05-8.00 mu g mL(-1) with a relative standard deviation of 2.9% (n = 5, c = 4.0 mu g mL(-1)). The limit of detection was 7.0 ng mL(-1). The interaction mechanism between the adsorbent and rutin was also studied. Feasibility of this method was validated by the analysis of rutin tablets and lotus plumule. (C) 2013 Elsevier B.V. All rights reserved.
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