TY - JOUR T1 - Development and Validation of a Spectrophotometric Procedure for Determining Silicon in Common Horsetail (Equisetum arvense L.) Herb JF - Pharmacognosy Journal Y1 - 2019 A1 - Aleksandr Vladimirovich Nikulin A1 - Olga Georgievna Potanina A1 - Evgeniy Alexandrovich Platonov A1 - Dmitry Olegovich Bokov A1 - Olga Aleksandrovna Smyslova A1 - Rimma Aleksandrovna Abramovich KW - Equisetum arvense KW - Horsetail herb KW - Medicinal plant raw material KW - Silicon AB -

Background: An accurate, simple and selective UV-spectrophotometric method was developed for the estimation of silicon in medicinal plant raw material – horsetail herb (Equisetum arvense L.) of Russian origin. Methods: The determination of total silicon content in terms of silicon dioxide (SiO2) by the direct ultraviolet–visible (UV-Vis) spectrophotometry method (at a wavelength of 815 ± 5 nm) in the horsetail herb is based on the formation of yellow-colored silicomolybdic acid, and its further reduction to molybdenum blue. Results: Recoveries were found to be in the range of 100.2 to 105.1% and %RSD was less than 2%. Conclusion: The developed method is accurate, specific, precise within an interval 2-12% and suitable for the analysis of horsetail herb commercial samples.

VL - 11 IS - 5 ER -