摘要
本文研究了Sb(Ⅲ)和Sb(Ⅴ)与Cl^-离子形成的络合物体系的紫外光谱特性。结果表明,在8mol/LHCl介质中,Sb(Ⅲ)氯络合物在波长230nm附近有最大紫外吸收,Sb(Ⅴ)氯络合物在波长270nm附近有最大吸收,两者吸收峰重叠。据此特点,本文对Sb(Ⅲ)和Sb(Ⅴ)及其混合液进行了加和性及线性检验,结果表明在紫外波长处其加和性及线性较好,交互作用较小。利用这种加和性,选择了适当波长(230,235,240,245,250nm)测其吸光度,通过解矛盾方程组,求出了Sb(Ⅲ)和Sb(Ⅴ)的含量,回收率实验结果令人满意。
T.ha characteristics of ultraviolet absorption spectra for the complex systems of Sb ( III )-Cl- and Sb(V)-Cl- have been studied.lt has been found that/in 8mol/L HC1 solution,the absorption maximums for the complex of Sb(III)and Sb(V) occur at 230 nm, and 270 nm, respectively, and the two absorption peaks overlap. The experiment results show that both the linearity between the concentration of Sb(III) or Sb( V )and the corresponding absorbence and the additive property for the absorbence of Sb(III) and Sb( V )in their mixed solution are good, and the interaction between Sb( III )and Sb( V ) can be neglected. Based on these results, five suitable wavelenths( 230, 23S, 240, 245, 250 nm ) have been selected for the measurment and the concentrations of Sb (III) and Sb (V) have been worked out by solving inconsistent equation sets. The recovery results of the methods are satisfactory.
出处
《冶金分析》
CAS
CSCD
北大核心
1990年第6期18-21,共4页
Metallurgical Analysis
