A novel mixed-mode stationary phase (OAS) has been prepared by bonding n-octyl and
aminopropyl groups with the surface of silica gel. The obtained OAS stationary phase was …

This study was designed in order to develop a new method to simultaneously determine the
level of water and fat soluble vitamins in feed additives. In this study, we tried to measure the …

Two separate liquid chromatography (LC)-mass spectrometry (MS) methods were
developed for determination and quantification of water-soluble and fat-soluble vitamins in …

Validation of methods for quantitative determination of vitamins in multivitamin preparations
was performed. It was confirmed that tested methods are suitable for determination of both …

Abstract In this Application Note we describe an application solution to carry out qualitative
and quantitative analysis of water soluble vitamins. We developed a single and robust …

The aim of the present study was to develop simple and accurate small-scale method for
simultaneous determination of retinol, a-tocopherol, ergocalciferol, and cholecalciferol in …

Background We developed a selective bioanalytical RP-HPLC method for estimation of
vitamin E from dried blood spot (DBS) sample, a potential technique which can be used for …

A reversed-phase high-performance liquid chromatography method (HPLC) with
coulometric electrochemical detection has been developed and validated for the …

A method for simultaneous determination of water‐soluble vitamins B1, B2, B3
(nicotinamide), B5, B6 (pyridoxamine), B9 and fat‐soluble vitamins E (α‐tocopherol) and K1 …