Journal
JOURNAL OF SEPARATION SCIENCE
Volume 33, Issue 14, Pages 2145-2152Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201000074
Keywords
Capillary LC; Fat-soluble vitamins; Magnetic octadecylsilane particles; Magnetic SPE
Categories
Funding
- National Natural Science Foundation of China [20575041]
- Ministry of Education Science Foundation of China for Returnees
- Science and Technology Committee of Guangdong Province [2007B020710007]
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A sensitive, fast and simple method based on magnetic octadecylsilane particles was developed for the extraction of three fat-soluble vitamins followed by capillary LC (CLC) analysis with UV detection. Magnetic octadecylsilane particles were prepared based on three-step reactions including co-precipitation, sol-gel polymerization and alkylation. The characterization of the prepared product was studied by scanning electron microscope and Fourier-transform infrared spectrometry. The particles were used as magnetic SPE adsorbent for the extraction of fat-soluble vitamins in fruit juice-milk beverage. The extraction condition and efficiency of the particles for fat-soluble vitamins were investigated. By coupling magnetic SPE with capillary LC with UV detection, low concentrations of fat-soluble vitamins in fruit juice-milk beverage can be detected without the interference from other substances in the sample matrix.
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