硒（Ⅳ）－碘化物－结晶紫体系的共振发光和二级散射光谱

Spectra of Resonant Luminescence and Double Scattering of Selenium (Ⅳ)-iodide-crystal Violet System

硒（Ⅳ）－碘化物－结晶紫体系的共振发光和二级散射光谱刘绍璞，刘忠芳（西南师范大学环境化学研究所，重庆，６３０７１５）关键词共振发光，二级散射，反二级散射，硒（Ⅳ）－碘化物－结晶紫体系，硒的测定长期以来，溶液体系的共振发光和二级散射现象常常被人们忽略。...

The spectra of resonant luminescence(RL) ,double scattering(DS) and anti-double scattering(ADS) of selenium(Ⅳ)-iodide-crystal violet system were studied. The spectral characteristics,the effect factors and optimum conditions of the reaction have been investigated.The quantitative relations of the IRL, IADS and IDS to the concentration of selenium (Ⅳ)have been investigated.The concentration of selenium is directly proportional to the IRL,IADS and IDs in the 0￣3.0μg/mL. The new analytical way for determination of trace amounts of selenium by RL and ADS was proposed. The methods have very highly sensitivities,the detection limits for selenium (Ⅳ)are 0.11 ng/mL for RL method and 0.16 ng/mL for ADS method, respectively.