New approach for determination of phenylephrine hcl in pure and pharmaceutical formulation using a various microextraction methods

In this study, ion pair reactions used for evaluation of phenylephrine HCl the development of simple, accurate, low-cost, and fast extraction methods for the separation of phenylephrine HCl was described. The first method was used was the direct extraction that included the reaction PHE with Alizarin yellow reagent to produce yellow complex in the acidic medium (pH=4). The absorbance of this complex was 430nm. The concentration range (I-20µg.mL^_1), the Beers law was obeyed with correlation coefficient (R²=0.997), limit of detection as (0.34µg.mL^_1), limit of quantification as (I.I2µg.mL^_I) and molar absorptivity as (14459.9). The second method was dispersive liquid liquid microextraction (DLLME). This method was used to estimation PHE complex by utilizing UV-Vis spectrophotometer. The linearity of calibration curve above was the range between (0.5–13 µg.mL⁻¹), the correlation coefficient (R²=0.996) and molar absorptivity was (12423.3), the detection limit (LOD) and quantification limit (LOQ) were (0.094µg.mL^_1) and (0.3Iµg.mL^_1), respectively. This process was successfully method to detect PHE in both pure and pharmaceutical formulations.