POLARIMETRIC ANALYSIS: PRINCIPLES, INSTRUMENTATION, AND APPLICATIONS IN PHARMACEUTICAL ANALYSIS
Abstract
Polarimetric analysis is a classical physicochemical analytical technique based on the measurement of optical rotation produced by optically active substances when plane-polarized light passes through them. This method plays a significant role in pharmaceutical, chemical, and biochemical analysis, particularly in the study of chiral compounds such as carbohydrates, amino acids, alkaloids, and certain active pharmaceutical ingredients. Due to its simplicity, non-destructive nature, and relatively high reproducibility, polarimetry is widely applied in routine quality control and raw material testing. This article presents an in-depth discussion of the theoretical background of polarimetry, the construction and operation of polarimetric instruments, analytical procedures, and the major applications, advantages, and limitations of the method in pharmaceutical analysis.
Keywords
Polarimetry; Optical rotation; Chiral compounds; Pharmaceutical analysis; Quality control
References
- Xomidjon o‘g‘li O. D. Gas Chromatography: Theoretical Principles and Applications in Pharmaceutical Analysis //Journal of Modern Educational Achievements. – 2025. – Т. 5. – №. 5. – С. 35-41.
- Xolmatov J. O. ANALYTICAL METHOD DEVELOPMENT FOR PHARMACEUTICAL SOLUTIONS //Экономика и социум. – 2025. – №. 5-1 (132). – С. 866-869.
- Mamatisakova G. A. et al. FROM PHARMACEUTICAL PROPERTIES OF BISMUTH DRUGS TO CLINICAL EFFICACY //Bulletin of Pure & Applied Sciences-Zoology. – 2024. – Т. 43.
- Skoog, D.A., Holler, F.J. and Crouch, S.R. (2014) Principles of Instrumental Analysis. 6th edn. Belmont, CA: Cengage Learning. https://doi.org/10.1007/978-1-4614-1789-8
- Mendham, J., Denney, R.C., Barnes, J.D. and Thomas, M.J.K. (2000) Vogel’s Textbook of Quantitative Chemical Analysis. 6th edn. Harlow: Pearson Education. https://doi.org/10.1002/9780470141961
- Shrivastava, A. and Gupta, V.B. (2011) ‘Analytical methods for optical rotation and polarimetric measurements’, Journal of Chemical Education, 88(6), pp. 769–773. https://doi.org/10.1021/ed100657p
- Eliel, E.L. and Wilen, S.H. (1994) Stereochemistry of Organic Compounds. New York: Wiley. https://doi.org/10.1002/9780470171787
- Gal, J. (2013) ‘Louis Pasteur, language, and molecular chirality I. Background and initial developments’, Chirality, 25(2), pp. 65–72. https://doi.org/10.1002/chir.22110
- Ermer, J. and Miller, J.H. McB. (2005) Method Validation in Pharmaceutical Analysis. Weinheim: Wiley-VCH. https://doi.org/10.1002/3527604689
- United States Pharmacopeial Convention (2023) USP–NF, General Chapter <781> Optical Rotation. Rockville, MD: USP. https://doi.org/10.31003/USPNF_M781
- European Pharmacopoeia Commission (2023) European Pharmacopoeia, General methods: Optical rotation. Strasbourg: Council of Europe. https://