Determination of Soil and Herbal Selenium in the Areas of Endemic Diseases Related to Selenium Background
地方病区与非病区土壤及药材中微量元素硒的测定

Objective To know the levels of selenium in both soils and herbals from the areas of endemic diseases related to selenium for providing new data to quality control and clinical use of the herbals. Methods Hydride Atomic Fluorescence Spectrophotometry. Results The levels of selenium in soils and herbals from the places in poor background of selenium of the and the content difference of selenium among the species are also obvious. Conclusions The selenium content in herbals mainly depends on geochemical background and some of them may produce better effects, or even a new indication.