地方病区与非病区土壤及药材中微量元素硒的测定

Determination of Soil and Herbal Selenium in the Areas of Endemic Diseases Related to Selenium Background

目的：了解低硒和高硒环境的地方病区药材中的硒水平，为药材质量控制和临床使用提供更多和更新的科学依据；方法：用氢化物原子荧光法测定地方病区土壤和药材中的硒含量，计算药用部位富集硒的能力，并与其它地区生长土壤和药材进行比较；结果：低硒地方病区土壤和药材中的硒水平普遍低于高硒区域，不同种的药用植物富集硒的能力也不相同；结论：药材中的硒含量与硒地球化学背景有密切关系，同种药材因含硒量高而可能具有更多更好的疗效。

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.