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Potentiometric iodide selectivity of polymer-membrane sensors based on Co(II) triazole derivative

机译：基于Co（II）三唑衍生物的聚合物膜传感器的碘化电位选择性

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摘要

The 3-amion-5-mercapto-1,2,4-triazole cobalt(II) [Co(II)AMETR] was used as a new carrier for preparing polymeric membrane selective sensor which exhibited high affinity for iodide ion. The effects of membrane composition, pH, the influence of lipophilic ion additives and plasticizer on the response characteristics of the sensor were investigated. The sensor showed a near Nernstian slope of - 56.6 mV/decade for I- ion over a wide concentration range from 8.5 x 10(-7) to 1.0 x 10(-1) M with a low detection limit of 5.1 x 10(-7) M. The sensor has a fast response time and could be used over a wide pH range of 2 - 8. The response mechanism is discussed in view of the AC impedance technique. The sensor was successfully applied to direct determination of iodide content in environmental water samples and mouth wash samples.
机译：3-氨基5-巯基-1,2,4-三唑钴（II）[Co（II）AMETR]被用作制备对碘离子具有高亲和力的聚合物膜选择性传感器的新载体。研究了膜组成，pH，亲脂离子添加剂和增塑剂对传感器响应特性的影响。传感器在8.5 x 10（-7）到1.0 x 10（-1）M的宽浓度范围内，离子的Nernstian斜率约为-56.6 mV /十倍，检测限低至5.1 x 10（-） 7）M.该传感器具有快速的响应时间，可以在2-8的宽pH范围内使用。考虑到交流阻抗技术，讨论了响应机理。该传感器已成功应用于直接测定环境水样品和漱口水样品中碘化物的含量。

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