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首页> 外文期刊>International Journal of Electrochemical Science >A New Microsensor for the Determination of Anionic Surfactants in Commercial Products
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A New Microsensor for the Determination of Anionic Surfactants in Commercial Products

机译：测定商品中阴离子表面活性剂的新型微传感器

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A new potentiometric microsensor for the determination of anionic surfactants (ASs), prepared by theapplication of a liquid membrane based on the dimethyldioctadecylammonium-tetraphenylborate(DDA-TPB) ion pair as a sensing material on a commercial carbon-based screen-printed electrode(SPE), was developed. The microsensor exhibited sub-Nernstian responses for sodium dodecylbenzenesulfonate (NaDBS, 45.7 mV/decade) and sodium dodecyl sulfate (NaDDS, 50.2 mV/decade) in-7 -3 -7 -3 concentration ranges from 110 to 210 M for NaDBS and from 210 to 710 M for NaDDS. The-7 detection limit of the new SPE microsensor was 110 M, which is even lower than the detection limitof a conventional ISE electrode with the same sensor material [1]. The new microsensor is veryaccurate and selective; thus, different ionic strengths, nonionic surfactants and potentially interferinganions did not have an influence on its performance. Two-component mixtures of ASs and threecommercial detergents with different AS contents were successfully titrated using the newmicrosensor, which resulted in the accurate quantification of ASs in the samples.
机译：一种新型的测定阴离子表面活性剂（ASs）的电位微传感器，该方法是通过在商用碳基丝网印刷电极（SPE）上使用基于二甲基二十八烷基lam四苯基硼酸酯（DDA-TPB）离子对的液膜作为传感材料而制备的）， 已开发。在-7 -3 -7 -3浓度范围（对于NaDBS而言，从110到210 M）和从-到对于NaDDS，为210到710M。新型SPE微传感器的-7检测限为110 M，甚至低于具有相同传感器材料的传统ISE电极的检测限[1]。新的微传感器非常精确和选择性;因此，不同的离子强度，非离子表面活性剂和潜在的干扰阴离子对其性能没有影响。使用新型微传感器成功滴定了AS的两组分混合物和AS含量不同的三种商业洗涤剂，从而可以精确定量样品中的AS。

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