离子缔合物二级散射光谱的分析应用　Ⅲ.汞(Ⅱ)-硫氰酸盐-罗丹明染料体系  

Double Scattering Spectra of Mercury(Ⅱ)-Thiocyanate-Rhodamine Dye Systems and Their Analytical Applications

作　　者：刘绍璞[1] 刘忠芳[1] 李明[1] 

机构地区：[1]西南师范大学环境化学研究所,重庆630715

出　　处：《分析化学》1996年第5期501-505,共5页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金

摘　　要：本文研究[Hg（SCN）4]2-络阴离子与罗丹明B和罗丹明6G离子缔合络合物的二级散射（DS）和“反二级散射”（ADS）光谱，考察了光谱特征、影响因素及适宜的反应条件；确定了DS和ADS强度与溶液中汞（Ⅱ）浓度的关系；提出了用ADS法测定痕量汞的新的高灵敏度分析方法，并对有关机理作了初步的探讨。This work studied on the spectra of double scattering and "antidouble scattering"of the ion-association complexes of [Hg (SCN )4]2- with basic xanthene dyes such as rhodamine B and rhodamine 6G. The spectral characteristics, the effective factors ai1d optimum conditions have been investigated. The relation between the intensity of double scattering light and the concentration of Hg(Ⅱ ) was established. A new and high sensiitive way for determination of trace amounts of Hg(Ⅱ ) by the ADS method was proposed.

关 键 词：二级散射光谱 汞 硫氰酸盐 罗丹明 离子缔合物 

分 类 号：O614.243[理学—无机化学] O657.3[理学—化学]