汞（Ⅱ）－硫氰酸盐－维多利亚蓝4R体系的共振发光和二级散射光谱及其分析应用

Spectra of Resonant Luminescence and Double Scattering of Mercury(Ⅱ)-Thiocyanate-Victoria Blue 4R System and Their Analytical Application

研究了（Ｈｇ（ＳＣＮ）４）配阴离子与维多利亚蓝４Ｒ（ＶＢ４Ｒ）离子缔合反应体系的共振发光（ＲＬ）、二级散射（ＤＳ）和反二级散射（ＡＤＳ）光谱，考察了它们的光谱特征，影响因素和适宜的反应条件，研究了ＲＬ，ＡＤＳ和ＤＳ强度与汞（ＩＩ）浓度之间的定量关系，提出了用ＲＬ，ＡＤＳ光谱测定痕量汞的方法，对汞（ＩＩ）的检测限分别为１．３３ｎｇ／ｍＬ和１．８３ｎｇ／ｍＬ，可用于水中μｇ／Ｌ级汞的测定。

This work studied the spectra of resonant luminescence(RL),double scattering(DS)and anti-double scattering(ADS)of the ion-association complex of[Hg(SCN)4](2-) withVictoria blue 4R(VB 4R).The spectral characteristics,the effect factors and the optimum conditions of the reaction have been investigated.The quantitative relationships of the I(RL),I(ADS)and I(DS) to the concentration of mercury were established. A new analytical method for determination of trace mercury(Ⅱ) was proposed.And we have a preliminary discussion on relative mechanism.