Electroanalytical method of acid red 1 and its supramolecular system with cyclodextrins
Electroanalytical method of acid red 1 and its supramolecular system with cyclodextrins
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DOI：
10.1016/j.dyepig.2005.03.005
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发表时间：
2006-07
影响因子：
4.5
通讯作者：
Yu-jing Guo;Jing-hao Pan;Xiaomel Li;Fei Lu
中科院分区：
文献类型：
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作者：
Yu-jing Guo;Jing-hao Pan;Xiaomel Li;Fei Lu
本文建立了酸性红1 （ar1）的电分析方法，并用极谱法和伏安法研究了ar1与环糊精的超分子体系。在0.1mol−1NaCl溶液中，通过线性扫描伏安法（LSV）发现了一个敏感的二阶导数还原峰（ip″）。电位峰值为- 830mV （vs. SCE）。峰值电流（ip″）与5.0×10−7-2.0×10−3moll−1范围内的浓度成正比（r= 0.9961-0.9986），检出限（LOD）为2.0×10−7moll−1。ar1的回收率为99.19% ~ 102.9%，相对标准偏差（RSD）为1.8%。ar1可与10个cd形成1:1的包合物。采用“电流法”计算夹杂物常数。此外，还比较了不同种类环糊精的包合能力，为AR - 1和环糊精的应用提供了一些基本数据。
In this paper, electroanalytical method of Acid red 1 (AR 1) has been established and the supramolecular system of AR 1 with cyclodextrins has been studied by polarography and voltammetry. In a supporting electrolyte of 0.1moll−1NaCl solution, a sensitive second derivative reduction peak (ip″) of AR 1 was found by Linear Sweep Voltammetry (LSV). The potential peak is −830mV (vs. SCE). The peak current (ip″) is proportional to the concentration over the range 5.0×10−7–2.0×10−3moll−1(r=0.9961–0.9986) and the limit of detection (LOD) is 2.0×10−7moll−1. The recovery of AR 1 varied from 99.19% to 102.9% and the relative standard deviation (RSD) was 1.8%. AR 1 can form 1:1 inclusion complex with 10 CDs. The inclusion constants were calculated by “electric current method”. Furthermore, the inclusion ability of different kind of cyclodextrins was compared, which provided some elemental data for application of AR 1 and cyclodextrins.