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激发光谱法检测被污染环境水中SDBS与甜菜碱复配体系

Study on Quantitative Analysis of SDBS and Betaine Complex System in Polluted Water by Excited Spectroscopy

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【作者】 石东坡尹先清郑延成陈武付家新任朝华

【Author】 Shi Dongpo;Yin Xianqing;Zheng Yancheng;Chen Wu;Fu Jiaxin;Ren Zhaohua;Key Laboratory of Exploration Technologies for Oil and Gas Resources of Ministry of Education, Yangtze University;

【机构】 长江大学油气资源与勘探技术教育部重点实验室

【摘要】 十二烷基苯磺酸钠(SDBS)与甜菜碱之间的相互干扰作用致使复配体系中二者的含量难以测定。采用向SDBS/甜菜碱复配体系中添加β-环糊精(β-CD)的方法来降低SDBS和甜菜碱之间的相互干扰,分别研究了β-环糊精对SDBS的激发性能、SDBS与甜菜碱之间的相互作用对检测的干扰影响及β-CD的抗干扰能力等因素。研究结果表明:添加β-CD能显著降低SDBS与甜菜碱的相互作用对检测的干扰,复配体系中SDBS及甜菜碱的回收率分别由103.9%~105.9%和103.4%~174.9%降低至101.8%~102.3%和102.3%~102.8%,检测准确性明显提高。将该方法应用于环境水样检测中,仍可准确检测二元复配溶液中的SDBS与甜菜碱含量。傅里叶变换红外光谱(FT-IR)及核磁共振氢谱(1H-NMR)的表征结果表明,在水溶液中SDBS分子能从β-CD分子的宽、窄口径两端进入β-CD的内腔,进而形成β-CD—SDBS包结体,包结体的形成是β-CD具有抗干扰能力的原因。

【Abstract】 It is hard to determine the concentration of sodium lauryl benzenesulfate(SDBS) or betaine in their complex system due to the strong interference between SDBS and betaine. A new method is developed for reducing the interactions between SDBS and betaine by adding β-cyclodextrin(β-CD) in their aqueous complex solution.Several factors such as the effect of β-CD on quantitative analysis of SDBS, the anti-interference ability of β-CD as well as the effect of interactions between SDBS and betaine are investigated. The results indicate that the effect of the interactions between SDBS and betaine on determination of SDBS/betaine complex system can be greatly reduced by adding β-CD, thus, the determination precision of SDBS and betaine can be greatly improved. The recovery rates of SDBS and betaine are respectively reduced from 103.9%~105.9% and 103.4%~174.9% to 101.8%~102.3% and 102.3%~102.8% in their aqueous complex solution. Besides, the experimental results further show that the SDBS and betaine complex in environmental water can also be analyzed by the method. The results of nuclear magnetic resonance hydrogen spectrum(1H-NMR) analysis and Fourier transform infrared spectroscopy(FT-IR)analysis show that the stale β-CD—SDBS inclusion can be formed by entering of SDBS molecules from the narrow or broad mouth of β-CD. The interference between SDBS and betaine can be reduced by β-CD because of the formation of β-CD and SDBS inclusion complex.

【基金】 国家自然科学基金(41202111)
  • 【文献出处】 光学学报 ,Acta Optica Sinica , 编辑部邮箱 ,2015年03期
  • 【分类号】O657.3;X832
  • 【被引频次】5
  • 【下载频次】136
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