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化学学报
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化学学报 ›› 1995, Vol. 53 ›› Issue (12): 1185-1192. 上一篇    下一篇

研究论文

离子缔合物二级散射光谱的分析应用2: 汞(II)-硫氰酸盐-感性三芳基甲烷染料体系

刘绍璞;刘忠芳;李明   

  1. 西南师范大学环境化学研究所
  • 发布日期:1995-12-15

Analytical application of double scattering spectra of ion-association complex 2: Mercury(II)-thiocyanate-basic triarylmethane dye systems

LIU SHAOPU;LIU ZHONGFANG;LI MING   

  • Published:1995-12-15

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693

被引次数

4

研究了[Hg(SCN)4]^2^1与结晶紫、孔雀石绿、亮绿或碘绿等碱性三芳基甲烷染料的离子缔合配合物的二级散射(DS)和"反二级散射"(ADS)光谱, 以及这类散射光谱的特征、影响因素和反应的适宜条件。确定了散射光强度与溶液中汞(II)浓度的关系。提出了用二级散射光谱测定痕量汞的新的高灵敏分析方法, 并对反应机理和两种二级散射发生变化的原因作了初步的讨论。

关键词: 分光光度法, 反应机理, 汞, 结晶紫, 硫氰酸盐, 痕量分析, 散射谱, 荧光分光光度法, 孔雀绿, 亮绿

The double scattering (DS) and anti-scattering (ADS) spectra of the ion-association complexes of [Hg(SCN)4]^2^- with the basic triarylmethane dye such as crystal violet (CV), malachite green (MG), brilliant green (BG), and iodide green (IG), their spectral characteristics and effective factors, and the optimum conditions of the reaction were investigated. The relation between the intensities of DS and ADS light and the concentration of mercury (II)was established. A new and highly sensitive way for the determination of mercury(II) by the ADS spectra has been proposed. Preliminary dicussed the mechanism of the reaction and the reasons of the change in the double scattering.

Key words: SPECTROPHOTOMETRY, REACTION MECHANISM, MERCURY, CRYSTAL VIOLET, THIOCYANATE, TRACE ANALYSIS, SCATTERING SPECTRA, FLUOROSPECTROPHOTOMETRY, MALACHITE GREEN, BRILLIANT GREEN

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