Convenient UV-spectrophotometric determination of citrates in aqueous solutions with applications in the pharmaceutical analysis of oral electrolyte formulations

Authors

S. Krukowski
M. Karasiewicz
W. Kolodziejski

Abstract

Herein, we present a convenient method for quantitative spectrophotometric determination of citrate ions in aqueous solutions in the middle-UV range. It involves measuring the absorbance of citric acid at 209 nm under suppressed dissociation at pH < 1.0 in the presence of hydrochloric acid. Validation of the method was performed according to the guidelines of the International Conference on Harmonization. A very good linear dependence of the absorbance on concentration (r2 = 0.9999) was obtained in a citrate concentration range of 0.5–5.0 mmol/L. This method is characterized by excellent precision and accuracy; the coefficient of variation in each case is below the maximal permissible value (%RSD < 2). The proposed analytical procedure has been successfully applied to the determination of citrates in oral electrolyte formulations. © 2017

Abstract Image

ScienceDirect Link

10.1016/j.jfda.2017.01.009

Recommended Citation

Krukowski, S.; Karasiewicz, M.; and Kolodziejski, W. (2017) "Convenient UV-spectrophotometric determination of citrates in aqueous solutions with applications in the pharmaceutical analysis of oral electrolyte formulations," Journal of Food and Drug Analysis: Vol. 25 : Iss. 3 , Article 7.
Available at: https://doi.org/10.1016/j.jfda.2017.01.009

Creative Commons License

This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Fulltext URL

https://www.sciencedirect.com/science/article/pii/S1021949817300558/pdfft?md5=fbb16f961c221684248afb9511e6b11a&pid=1-s2.0-S1021949817300558-main.pdf