摘要
本文研究了锡(Ⅳ)-氨三乙酸(NTA)-水杨基萤光酮(SAF)-CTMAB四元混配络合物的形成条件,所拟方法用于测定钢材、铝合金及铁矿中的痕量锡,结果满意。
A spectrophotometric method for the determination of Sn(Ⅳ) is developed. It was found that tin (Ⅳ) forms a quaternary complex with nitrilotriacetic acid (NTA), salicylfluorone (SAF) and CTMAB at pH 3.2-4.1. The complex is stable at least 3h. The molar absorptivity is 2.74×l05 at 532nm. Beer's law is obeyed in the range 1.34-21.86 μg Sn(Ⅳ)/25ml. This method is highly sensitive and free from interference of most other ions after extraction separation. The method has been used to determine trace of tin in steel, alloy and ores with satisfactory results.
出处
《岩矿测试》
CAS
CSCD
北大核心
1991年第1期38-40,共3页
Rock and Mineral Analysis
关键词
锡
测定
分光光度法
水杨基萤光酮
spectrophotometric method, tin, salicylfluorone.
