摘要
利用７１７型阴离子交换树脂吸附Ｆｅ（Ⅲ）－硫氰酸盐－吐温８０配合物，配合物最大吸收峰位于波长４８１．４ｎｍ，表观摩尔吸光系数为１．０６×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，Ｆｅ（Ⅲ）量在０～８００μｇ／Ｌ服从比尔定律，建立了相应Ｆｅ（Ⅲ）的固相分光光度法，应用于高纯稀土中痕量铁的测定，结果满意。
A solid phase spectrophotometry for determination of Fe(Ⅲ) have been established. The Fe(Ⅲ)-thiocyanate-Tween 80 coordination compound was adsorbed by anion exchange resin. The apparent molar absorptitvty of the coordination compound at 481.4 nm of wavelength is 1.06×105 L·mol-1·cm-1. Beer’s law is obeyed in the range of 0～800 μg·L-1 for Fe(Ⅲ). The method is applied to the determination of trace iron in highly purity rare earth oxides with satisfactory results.
出处
《分析测试学报》
CAS
CSCD
1999年第2期36-38,共3页
Journal of Instrumental Analysis
基金
江西省自然科学基金
