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Article
Dispersive micro-solid phase extraction combined with high-performance liquid chromatography for the determination of three penicillins in milk
Food Analytical Methods
(2015)
Abstract
A simple, rapid, and environmentally friendly microextraction termed COU-2-D-μ-SPE has been developed for the analysis of three penicillins (i.e., oxacillin, cloxacillin, and dicloxacillin) in milk samples. An ordered mesoporous carbon, COU-2, was synthesized and used as the sorbent in dispersive micro-solid phase for the extraction of selected penicillins prior to high-performance liquid chromatographyultraviolet detection (HPLC-UV). Several important parameters, namely, pH value, salt addition, desorption solvent, extraction time, desorption time, and amount of COU-2, were investigated and optimized. Under the optimum extraction conditions, the method showed good linearity in the range of 10–5,000 μg L−1 (r 2 ≥0.9994), low limits of detection (2.0– 3.3 μg L−1 ), acceptable reproducibility (relative standard deviation (RSD) 6.2–8.8 %, n=9), and satisfactory relative recoveries (80.3–99.5 %) for studied penicillins in milk. The proposed COU-2-D-μ-SPE method has been successfully applied to six commercial milk samples, and the extraction of blank samples indicated that all samples were free from selected penicillin contamination.
Keywords
- Liquid chromatography,
- Penicillins,
- Microextraction,
- Dispersive micro-solid phase extraction,
- Mesoporous carbon,
- Milk
Disciplines
Publication Date
2015
DOI
10.1007/s12161-014-9991-7
Citation Information
Noorfatimah Yahaya, Mohd Marsin Sanagi, Takahito Mitome, Norikazu Nishiyama, et al.. "Dispersive micro-solid phase extraction combined with high-performance liquid chromatography for the determination of three penicillins in milk" Food Analytical Methods Vol. 8 (2015) p. 1079 - 1087 Available at: http://works.bepress.com/hadi_nur/96/