摘要
本文研究了铁(Ⅰ)与硫氰酸盐-吐温-40的显色反应。在pH1.7—3.3的盐酸-乙酸钠介质中显色。络合物的最大吸收峰位于484 nm,摩尔吸收系数为2.13×10~4L·mol^(-1)·cm^(-1),铁量在0—200μg/25ml服从比尔定律。方法适用于矿石中铁的测定。
The dye reaction of Fe(Ⅲ) with thiocyanate and Tween-40 are studied. In the range of pH1. 7—3. 3,the maximun absorbance of the complex is at 486 nm. Its molar absorptivity is 2. 13×10~4 L?mol'1·cm^(-1), Beer's law is obeyed over the range of 0—200μg Fe(Ⅲ) per 25ml. This method is suggested for the determination of iron in ores.
出处
《矿物岩石》
CAS
CSCD
1992年第2期99-102,共4页
Mineralogy and Petrology
