Development and validation of UV-spectrophotometric method for the determination of folic acid in bulk and tablet dosage forms

Abstract

Received: 23 rd November 2021 The purpose of this study was to create and verify a simple and accurate UV-Spectrophotometric technique for determining Folic acid in bulk and tablet dosage form. The approach was based on the measurement of folic acid solution absorbance at 255nm in 0.01 M NaOH. In the concentration range of 10-50 g/ml, the constructed calibration curve was found to be linear (R 2 = 0.9996). Limits of detection and quantification were 2.73 µg/ml, and 8.27 µg/ml, respectively. The precision of the developed method was confirmed by the obtained low RSD% values. Recoveries percentages were found 98.46%±1.42, 100.0%±0.20, 98.92%±1.12; n=3 for 50%, 100% and 150% levels, respectively indicating the method accuracy and freedom of interference from excipients. Folic acid content percent in the two analyzed brands were found to be equal 96.59%±0.005; n=3, and 97.28%±0.003; n=3 which complies with the official range (90-110%).