罗丹明6G-阴离子表面活性剂体系的共振瑞利散射光谱及分析应用  

Resonance Rayleigh Scattering Spectra of Rhodamine 6G-Anionic Surfactant Systems and Their Analytical Application

作　　者：陈兴会[1] 吕昌银[1] 刘红涛[1] 贺元文[1] 宁玲[1] 

机构地区：[1]南华大学公共卫生学院卫生化学检测教研室,湖南衡阳421001

出　　处：《分析科学学报》2009年第3期272-276,共5页Journal of Analytical Science

摘　　要：在pH2．00～3．42的B—R缓冲溶液中，罗丹明6G与十二烷基苯磺酸钠（SD—BS）、十二烷基硫酸钠（SDS）阴离子表面活性剂反应形成离子缔合物，导致共振瑞利散射（RRS）增强，并产生新的RRS光谱，最大RRS峰位于375nm，方法对SDBS、SDS的检出限分别为6ng／mL、5ng／mL，其线性范围分别为0．02～5．6μg／mL、0．02～14．0μg／mL。研究了适宜的反应条件，方法具有较高的灵敏度，用于合成水样和环境水样中阴离子表面活性剂含量的测定，结果满意。In pH 2. 00-3. 42 Britton-Robinson（B-R） buffer medium, Rhodamine 6G can react with sodium dodecylbenzene（SDBS） and sodium dodecyl sulfate（SDS） to form ion-association complexes. As a result, an enhanced resonance rayleigh scattering（RRS） spectra was observed, and the maximum RRS wavelengths of ion-association complexes were located at 375 nm. The detection limits of SDBS and SDS were 6 ng/mL and 5 ng/mL, and the linear ranges were 0. 02 - 5. 6 and 0. 02 - 14. 0 μg/mL, respectively. The method has been applied to the determination of SDBS and SDS in simulated and environmental samples with satisfactory results.

关 键 词：罗丹明6G 阴离子表面活性剂 共振瑞利散射 

分 类 号：O657.39[理学—分析化学]