离子缔合物二级散射光谱的分析应用——Ⅰ.硒(Ⅳ)-碘化物-罗丹明B体系

Analytical Application of Double Scattering Spectra of Ion-Association Complex

从硒(Ⅳ)-碘化物-罗丹明B反应体系的研究中,发现了离子缔合物水溶液的两种二级散射光谱现象.研究了它们的光谱特征、影响因素和适宜条件,确定了二级散射强度与溶液中离子缔合物浓度的关系,提出了利用二级散射光谱测定痕量硒的高灵敏分析方法.

The nature of double scattering light from an agueous solution of ion-association complex of selenium(Ⅳ)-I --rhodamine B system was studied. The spectral characteristics of the double scattering, the effective factors and optimum conditions of the reaction have been investigated. The relation between the intensity of double scattering light and the concentration of selenium(Ⅳ) was established. A New way for determination of trace amounts of selenium(Ⅳ) by the double scattering spectra was proposed. The mechanism of the reaction was also discuesed.