Development of coupled ultrasound‐assisted and reversed‐phase dispersive liquid–liquid microextraction before high‐performance liquid chromatography for the sensitive determination of vitamin A and vitamin E in oil samples

Publisher： John Wiley & Sons Inc

E-ISSN： 1615-9314|38|18|3254-3261

ISSN： 1615-9306

Source： JOURNAL OF SEPARATION SCIENCE (ELECTRONIC), Vol.38, Iss.18, 2015-09, pp. : 3254-3261

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