基于HP-β-CD修正光谱法检测SDBS/OP-10二元复配体系

doi:10.13218/j.cnki.csdc.2016.04.001

摘要/Abstract

摘要： 十二烷基苯磺酸钠(SDBS)和辛基酚聚氧乙烯醚(OP-10)之间的相互作用,能对复配体系中二者的检测产生明显影响。实验结果表明,在水溶液中OP-10能对同步荧光光谱法测定SDBS的表观cmc及荧光强度产生显著影响:当OP-10的浓度从0增加到0.500,1.000和2.000 mmol/L时,SDBS的表观cmc由1.183 mmol/L分别降低至1.011,0.861和0.658 mmol/L;增加OP-10的浓度还将导致SDBS的同步荧光强度逐渐增大。SDBS也会对比色法检测OP-10产生显著影响。按SDBS的摩尔计量比加入1∶1的羟丙基-β-环糊精(HP-β-CD),能明显降低SDBS和OP-10间的相互作用,二元复配溶液中SDBS和OP-10的回收率分别由80.2%~105.2%和65.4%~93.1%变化至101.1%~101.4%和101.4%~102.6%,SDBS和OP-10的检测准确度均显著提高。Job’s实验及FT-IR分析表明,SDBS分子进入HP-β-CD分子的内腔进而形成1∶1的包结物,是降低各种相互协同作用对检测SDBS和OP-10产生影响的主因。

关键词: 十二烷基苯磺酸钠, 辛基酚聚氧乙烯醚, 复配体系, 羟丙基-β-环糊精, 修正光谱, 定量分析

Abstract: The interaction between sodium dodecyl benzene sulfonate (SDBS) and ethoxylated octylphenol (OP-10) could have a significant impact on the quantitative determination of SDBS/OP-10 binary blend in aqueous solution.Experimental results indicated that the apparent critical micelle concentration (cmc) values and the fluorescence intensities of SDBS measured by synchronous fluorescence spectrometry could be greatly changed because of the existence of OP-10.The cmc values of SDBS reduce from 1.183 mmol/L to 1.011,0.861 and 0.658 mmol/L when the concentrations of OP-10 increase from 0 to 0.500,1.000 and 2.000 mmol/L in water respectively,and the fluorescence intensities of SDBS would be increased with the increasing concentration of OP-10.On the other hand,the existence of SDBS could also have a significant impact on the quantitative analysis of OP-10 in aqueous solution by chemical colorimetry.The results indicated that the interaction between SDBS and OP-10 could be greatly reduced by adding 1∶1 hydroxypropyl-β-cyclodextrin (HP-β-CD) according to the molar amount of SDBS,thus,the recovery rates of SDBS and OP-10 change from 80.2%-105.2% and 65.4%-93.1% to 101.1%-101.4% and 101.4%-102.6% respectively,which showed that the measurement veracity of SDBS and OP-10 in SDBS/OP-10 binary blend has been greatly improved.The experimental results of Job’s test and FT-IR analysis exhibited that the interaction between SDBS and OP-10 could be greatly reduced because of the formation of HP-β-CD/SDBS inclusion compound with molar ratio of 1∶1.

Key words: sodium dodecyl benzene sulfonate, ethoxylated octylphenol, blend system, hydroxypropyl-β-cyclodextrin, revised spectrum, quantitative analysis

中图分类号:

TQ423

石东坡, 尹先清, 陈武, 郑延成, 李赓. 基于HP-β-CD修正光谱法检测SDBS/OP-10二元复配体系[J]. 日用化学工业, 2016, 46(4): 183-188.

SHI Dong-po, YIN Xian-qing, CHEN Wu, ZHENG Yan-cheng, LI Geng. Quantitative determination of SDBS and OP-10 binary blend system based on the revised spectrum induced by HP-β-CD[J]. China Surfactant Detergent & Cosmetics, 2016, 46(4): 183-188.

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