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首页> 外文期刊>International Journal of Electrochemical Science >Sn (II) selective 2-Amino-1,4-Naphthoquinone Derived poly(vinyl chloride) Membrane Sensors
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Sn (II) selective 2-Amino-1,4-Naphthoquinone Derived poly(vinyl chloride) Membrane Sensors

机译：Sn（II）选择性2-氨基-1,4-萘醌衍生的聚氯乙烯膜传感器

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摘要

The two quinone derivatives, 2-( N-alkenyl) amino-1,4-naphthoquinone (M1) and 2-(N-1- butenyl)amino-1,4-naphthoquinone (M2), have been synthesized and explored as ionophores forpreparing PVC-based membrane sensors selective to stannous ion. The influences of membranecompositions on the potentiometric response of the electrodes have been found to substantiallyimprove the performance characteristics. The best performance was obtained with the electrode havinga membrane composition (w/w; mg) of (M1): PVC: NaTPB: o-NPOE in the ratio 5: 150: 5: 150. Thesensor shows a linear potential response for Sn2+ over a wide concentration range 1.4 10-7 to 1.0 -2 -1 10 M with Nernstian compliance (30.0 0.2 mVdecade of activity) within pH range 2.5 to 7.5 and afast response time of 10 s. The sensor has been found to work satisfactorily in partially non-aqueousmedia up to 20% (v/v) content of methanol, ethanol, and acetone. The analytical usefulness of theproposed electrode has been evaluated by its application in the determination of stannous in artificiallymade samples.
机译：合成并探索了两种醌衍生物2-（N-烯基）氨基-1,4-萘醌（M1）和2-（N-1-丁烯基）氨基-1,4-萘醌（M2）用于制备对亚锡离子有选择性的PVC基膜传感器。已经发现膜组成对电极的电位响应的影响实质上改善了性能特征。当电极的膜组成（w / w; mg）为（M1）：PVC：NaTPB：o-NPOE的比例为5：150：5：150时，可获得最佳性能。传感器对Sn2 +的线性电势响应超过在2.5至7.5的pH范围内具有Nernstian顺应性（30.0 0.2 mV活性的十年）的宽浓度范围1.4 10-7至1.0 -2 -1 10 M，响应时间为10 s。已发现该传感器在部分非水介质中的甲醇，乙醇和丙酮含量高达20％（v / v）的情况下都能令人满意地工作。通过在人造样品中亚锡的测定中对所提出电极的分析实用性进行了评估。

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