Content and Distributio of Non-metals in Flowers and Inflorescences of Medicinal Plants

摘要

The concentration of total nitrogen, phosphorus, sulfur, chlorine, iodine and boron in commercial raw plant materials used in medicine taken from selected species of plants growing in Poland were determined. Except for sulfur, the content of all non-metals, after previous sample mineralisation, was determined spectrophotometrically. Sulfur was determined turbidimetrically using BaCl_2 as a turbidic agent. It was established, that analyzed material contained from several to some tens #mu#g of iodine and boron per gram of dry plant tissue, from several hundred #mu#g to several mg of sulfur and phosphorus per gram of dry plant tissue, and from several to some tens of mg of nitrogen and chlorine per gram of dry plant tissue. Species of medicinal plants, which are particularyl rich or poor in the studied elements were identified. The regression and principal component analyses revealed some rules about distribution of non-metals in particular plant species and also made possible determination of relations, in which these elements occur in investigated plant materials.