水溶性苯胺蓝与十六烷基三甲基溴化铵作用的共振光散射研究

Study on the interaction of water soluble aniline blue with CTAB by resonance light scattering method

在pH1．81的缓冲介质中，水溶性苯胺蓝与十六烷基三甲基溴化铵作用并形成离子缔合物，产生以383nm为特征峰的共振光散射（RLS）增强信号。其RLS增强程度与水溶性苯胺蓝浓度成线性关系，检出限和线性范围分别为1．28nmol／L和0．013～54．0μmol／L，据此建立了痕量水溶性苯胺蓝的共振光散射分析方法。

In pH 1.81 buffer solution, water soluble aniline blue （AB） and cetrimonium bromide （CTAB） interacted to form ion-association complex, which resulted in greatly enhanced resonance light scattering （RLS） signals at 383 nm. It was found that the enhanced RLS intensity （ AI_RLS） at 383 nm was proportional to the concentration of water soluble aniline blue. The determination limit and the linear range of water soluble aniline blue were 1.28 nmoI./L and 0. 013 ～54. 0 μmol/L. Thus a new method for the determination of trace water soluble Aniline blue could be established accordingly.