摘要
对硒（Ⅳ）－ＫＩ－结晶紫显色体系进行了较系统的研究，确定了最佳显色条件。该体系在０－２０ｕｇ／２５ｍｌ范围内服从比尔定律。摩尔吸光系数ε＝２．０ｘ１０５．测定了中草药黄芪及矿泉水中硒的含量与加标回收率。结果满意。
A highly sensitive color system of selenium(Ⅳ)-KI-crystal violet was studied systematically. The optimum condi-*tions and the main characters of the system were determined.Beer's law is obeyed over a range of 0-20ug Se/25ml,and the*apparent molar absorptivty is 2.0x105L·mol-1·cm-1.The color system was used to determine the microamounts of se inHuangqi which is one kind of Chinese herbal medicines and in mineral water. The results were satisfactory.*
出处
《冶金分析》
CAS
CSCD
北大核心
1998年第3期9-11,共3页
Metallurgical Analysis
关键词
硒
结晶紫
分光光度法
硒化钾
Selenium,Crystal violet, Spectrophotometry.
