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首页> 外文期刊>International Journal of Electrochemical Science >Amperometric Assay of Sodium Dodecyl Sulfate Based on Anion Exchange Using PDDA as Active Acceptor
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Amperometric Assay of Sodium Dodecyl Sulfate Based on Anion Exchange Using PDDA as Active Acceptor

机译：基于阴离子交换使用PDDA作为活性受体的Amperometric测定硫酸钠

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This study demonstrates a facile and effective strategy for amperometric assay of electrochemicallyinactive sodium dodecyl sulfate (SDS) based on different binding affinity ofpoly(diallyldimethylammonium chloride) (PDDA) toward electrochemically inactive SDS and active[Fe(CN)6]3-/4- anions. To improve conductivity of the modified electrode nanomaterial,PDDA/GO/SWCNTs hybrid nanomaterial is first prepared and used as the artificial receptor torecognize the anions (i.e., [Fe(CN)6]3-/4- and SDS). The stronger binding affinity of the PDDA towardSDS than [Fe(CN)6]3-/4- anions results in the decrease of the redox peaks current of surface modifiedPDDA and provides a quantitative signal readout for the SDS assay. Thereafter, an amperometricassay for SDS based on anion-exchange at [Fe(CN)6]3-/4-/PDDA/GO/SWCNTs modified glassy carbonelectrode was developed. The ratio of the current decrease shows a linear relationship with SDSconcentration range from 1.0 to 200 μM, and the limit of detection of SDS is 36.51 nM. And theresults indicate that the study not only provides a simple and effective way to a polyanion of SDSassay, but also opens a new route to developing electrochemical methods for electrochemically inertcontaminants by fully utilizing the anion-exchange principles.
机译：本研究证明了基于Poly（二烯二甲基氯化铵）（PDDA）朝向电化学惰性SDS和活性[Fe（CN）6] 3- / 4-阴离子。为了改善改性电极纳米材料的电导率，首先制备PDDA / GO / SWCNTS杂化纳米材料并用作人造受体以识别阴离子（即[Fe（CN）6] 3- / 4-和SDS）。 PDDA的较强的结合亲和力比[Fe（CN）6] 3- / 4-阴离子导致表面改性稀疏的氧化还原峰电流的降低，并为SDS测定提供定量信号读数。此后，显影基于[Fe（CN）6] 3- / 4- / PDDA / GO / SWCNTS改性玻璃电极的基于阴离子交换的SDS的安培测定。电流减小的比率显示了与SDSconcomation的线性关系为1.0至200μm，并且SDS的检测限为36.51nm。结果表明，该研究不仅为SDSassay的多变提供了一种简单而有效的方法，而且还通过充分利用阴离子交换原理开启用于开发电化学惰性植物的电化学方法的新途径。

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