摘要
ｐＨ值在７．０—８．５的范围内，锡与偶氮邻苯二酚苯基荧光酮、吐温－８０形成络合物，其最大吸收峰５５６ｎｍ，摩尔吸光系数２．９×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，锡的含量在０—６μｇ／２５ｍＬ范围内遵守比耳定律。本方法对干扰离子的影响和消除进行了研究。本方法已被用于岩石样中锡的测定，结果满意。
The complex of tin(Ⅳ) with P DP PF and Tween 80 is formed in the pH rage of 7.0—8.5,Its maximum absorption is at 556 nm,and molar absorptivity is 2.9×10 5L·mol -1 ·cm -1 .Beer's law is obeyed for 0—6μgSn/25mL.The influence of foreign ions and their climinution have also been studied.The method has been applied to the determination of Sn in ores with satisfactory results.
出处
《光谱实验室》
CAS
CSCD
1998年第6期55-57,共3页
Chinese Journal of Spectroscopy Laboratory
