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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。
In this paper, the UV spectra of complexes of Sb (Ⅲ) and Sb (Ⅴ) with Cl ~ - ions were studied. The results showed that the maximum absorption of Sb (Ⅲ) chloride complex at 230nm wavelength and the maximum absorption of Sb (Ⅴ) chloride complex at wavelength of 270nm in 8mol / LHCl were observed. Based on these characteristics, the additive and linearity tests of Sb (Ⅲ), Sb (Ⅴ) and their mixtures were carried out. The results show that the addition and linearity of Sb (Ⅲ), Sb (Ⅴ) Using this addition, the absorbances of the samples were determined at appropriate wavelengths (230, 235, 240, 245 and 250 nm). The contents of Sb (Ⅲ) and Sb (Ⅴ) were determined by solving the contradictory equations. The experimental results were satisfactory.