发光学报2017，Vol.38Issue(4)：535-542,8.DOI:10.3788/fgxb20173804.0535
HP-β-CD消除SDS对SDBS同步荧光光谱的影响
Interference of SDS on Synchronous Fluorescence Spectrum of SDBS Reduced by HP-β-CD
摘要
Abstract
The interaction between sodium dodecyl benzene sulfonate (SDBS) and sodium dodecyl sulfonate (SDS) could have a significant impact on the quantitative analysis of SDBS in water.The results indicate that the existence of SDS not only can improve the synchronous fluorescence intensity of SDBS but also can greatly decrease the apparent critical micelle concentration values of SDBS.The interference of SDS on the synchronous fluorescence intensity of SDBS can be greatly reduced by adding 1∶1 HP-β-CD according to the molar amount of SDBS.The results also show that SDBS molecules are more likely to form SDBS/HP-β-CD inclusion with the molar ratio of 1∶1 rather than micelles in HP-β-CD aqueous solution.Thus, the standard molar Gibbs free energy for SDBS from aqueous SDS/SDBS binary blend solution to the micelle, ΔγGθm, increases from-39.681 kJ·mol-1 to-37.580 kJ·mol-1 while the concentration of HP-β-CD increases from 0 to 0.900 mmol·L-1.The concentration of SDBS in aqueous SDS/SDBS binary blend solution (water samples taken from T5 sites of LinPan oilfield), can be accurately determinated by adding proper amount of HP-CD, and the recovery rate of SDBS is 101.0%-101.6%.The results of 1H-NMR and FT-IR exhibit that the interference of SDS on quantitative determination of SDBS can be greatly reduced because of the formation of SDBS/HP-β-CD inclusion (molar ratio of 1∶1) with SDBS molecule locating within the broad mouth of HP-CD molecule.关键词
SDS/SDBS复配体系/羟丙基-β-环糊精/胶束/同步荧光法/干扰Key words
SDS and SDBS complex/HP-β-cyclodextrin/micelle/synchronous fluorescence spectrometry/interference分类
化学化工引用本文复制引用
石东坡,尹先清,陈武,郑延成,付家新,李赓..HP-β-CD消除SDS对SDBS同步荧光光谱的影响[J].发光学报,2017,38(4):535-542,8.基金项目
国家自然科学基金(41202111) （41202111）
湖北省自然科学基金(2015CFB189) （2015CFB189）
长江大学长江人才计划资助项目 Supported by National Natural Science Foundation of China (41202111) （41202111）
Natural Science Foundation of Hubei Province (2015CFB189) （2015CFB189）
Yangtze Talent Program of Yangtze University （）
