@article {980, title = {Development and Validation of a Spectrophotometric Procedure for Determining Silicon in Common Horsetail (Equisetum arvense L.) Herb}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {September 2019}, pages = {1124-1131}, chapter = {1124}, abstract = {

Background: An accurate, simple and selective UV-spectrophotometric method was developed for the estimation of silicon in medicinal plant raw material {\textendash} 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{\textendash}visible (UV-Vis) spectrophotometry method (at a wavelength of 815 {\textpm} 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.

}, keywords = {Equisetum arvense, Horsetail herb, Medicinal plant raw material, Silicon}, doi = {10.5530/pj.2019.11.175}, author = {Aleksandr Vladimirovich Nikulin and Olga Georgievna Potanina and Evgeniy Alexandrovich Platonov and Dmitry Olegovich Bokov and Olga Aleksandrovna Smyslova and Rimma Aleksandrovna Abramovich} }