- 作者: --
- 作者服務機構: Department of Chemistry, Faculty of Sciences, Razi University, Kermanshah, Iran
- 中文摘要: In this work, a simple and rapid analytical procedure was applied for simultaneous determination of folic acid (vitamin B0), thiamin (vitamin B1), riboflavin (vitamin B2) and pyridoxal (vitamin B6) based on the absorbance data in the pH range 2.0-12.0 at 25 °C using parallel factor analysis (PARAFAC). The effect of the pH as the most important factor on the sensitivity of the determination was studied. The spectral data were recorded in 400-650 nm intervals and a 2-12 pH range for all four vitamins. The calibration set was constructed in the concentration ranges of 4-22, 1-20, 6-26, and 4-20 mg mL-1 for B6, B2, B1 and B0, respectively. The root mean squares errors of prediction for the prediction set, (RMSEP), are 0.65, 0.63, 1.13 and 0.34 for B0, B1, B2 and B6, respectively. The recovery percent for the validation set are in the range of 90.6 to 107.0%. The effect of the experimental conditions and diverse species were discussed. The optimum values of these factors were searched according to the relative standard deviation of the prediction set of mixtures solutions.
- 英文摘要: --
- 中文關鍵字: N-way model; PARAFAC; Simultaneous spectrophotometric determination; Vitamin B group.
- 英文關鍵字: --