In cognizance of the difficulties involved in the colorimetric and titrimetric methods for the
determination of individual vitamins, this laboratory has been carrying out a series of studies …

A semi-automatic procedure for the continuous clean-up and concentration of several fat-
soluble vitamins prior to their separation by HPLC and UV detection is reported. The …

HPLC method was developed and applied to the determination of some water-soluble
vitamins (B1, B2, B3, B6, B9, B12 and C in Syrian pharmaceutical preparations. Reserved …

An over-pressure layer chromatographic procedure with photodensitometric detection for the
simultaneous determination of water-soluble vitamins in multivitamin pharmaceutical …

A spectrophotometric method is proposed for the simultaneous determination of vitamins A,
D and E in multivitamin pharmaceutical preparations. This is based on multiple linear …

ABSTRACT A simple and precise high performance liquid chromatographic method has
been developed and validated for the simultaneous determination of vitamin A (vit. A) and …

HPLC stability-indicating method has been developed for the simultaneous determination of
some water-soluble vitamins (ascorbic acid, thiamine hydrochloride, riboflavin-5 …

A fast, simple, and reliable method for the isolation and determination of the vitamins
thiamin, riboflavin, niacin, pantothenic acid, pyridoxine, folic acid, cyanocobalamin, and …

Objective To establish a high-performance liquid chromatography-tandem mass
spectrometry (LC-MS/MS) method for the simultaneous determination of seven vitamin Bs …

A new, rapid and highly sensitive and rapid method was proposed for the simultaneous
determination trace levels of vitamin C and folic acid in the human urine samples. The …