Study of the Elemental Composition of Pectoral Species No. 2 and Its Components

Abstract

INTRODUCTION. The influence of anthropogenic factors on the content of toxic elements in plants increases the need for monitoring the content of toxic elements in medicinal plant raw materials and the corresponding herbal medicinal products. In addition, studying the elemental composition of herbal medicinal products will help determine their potential in the treatment of elemental metabolism disorders (macroand micro-elementoses).AIM. This study aimed to determine the elemental composition and the heavy metal content in Pectoral Species No. 2 and its components.MATERIALS AND METHODS. The study used Pectoral Species No. 2 and its components, including common coltsfoot (Tussilago farfara L.) leaf, greater plantain (Plantago major L.) leaf, and liquorice (Glycyrrhiza glabra L., G. uralensis Fisch.) root. The samples were manufactured by Krasnogorskleksredstva JSC and purchased at Moscow pharmacies. To determine the elemental composition, the study samples were digested with concentrated nitric acid and analysed by inductively coupled plasma mass spectrometry (ICP-MS). The calibration involved using concentrations ranging from 0.5 to 1.5 times the maximum permissible concentration for each element.RESULTS. This study identified and quantified 26 elements in Pectoral Species No. 2 and its components. The content of heavy metals was within the permissible concentrations. The study established the predominant macronutrients (potassium, calcium, and magnesium), micronutrients (iron, aluminium, and strontium), and ultramicronutrients (barium, nickel, and chromium) in Pectoral Species No. 2. The authors evaluated the contributions of each herbal drug to the total element content in the medicinal product.CONCLUSIONS. Coltsfoot leaf exerts the greatest influence on the content of macro-, micro-, and ultramicronutrients in Pectoral Species No. 2. Greater plantain leaf contributes the most to the zinc, silver, and nickel content. Liquorice root has the highest strontium and molybdenum content.