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首页> 外文期刊>Journal of the Brazilian Chemical Society >A Novel Sensitive Bulk Optode Based on 5-Br Salophen as an Ionophore for Determination of Zinc Ion in Real Samples
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A Novel Sensitive Bulk Optode Based on 5-Br Salophen as an Ionophore for Determination of Zinc Ion in Real Samples

机译：基于5-Br Salophen作为离子载体的新型灵敏体光电二极管，用于测定实际样品中的锌离子

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摘要

An optical sensing film was fabricated for sensitive determination of zinc ion in aqueous solutions. The optical sensor was prepared by synthesized ionophore, 5-Br salophen, dioctyl sebacate (DOS) as a plasticizer, sodium tetraphenyl borate (NaTPB) as a lipophilic anionic additive in a poly(vinyl chloride) membrane. The optode response is based on the cation-exchange membrane and indicated a significant absorbance signal change on the exposure to Britton-Robinson buffer solution of pH 5.7 containing Zn2+ ion. The proposed sensor showed a linear range of 4.9 ?? 10-5-4.5 ?? 10-12 mol L-1 with a limit of detection of 3.9 ?? 10-12 mol L-1. Furthermore, satisfactory analytical sensing characteristics including selectivity, stability, and reproducibility for the determination of zinc ion were obtained. The response time of the sensing film was less than 5 min, depending on the concentration of Zn2+ ions. The proposed sensor was successfully applied for determination of zinc in tap water, river water, and sea water.
机译：制作了一个光学传感膜，用于灵敏测定水溶液中的锌离子。通过在聚（氯乙烯）膜中合成离子载体，5-Br Salophen，癸二酸二辛酯（DOS），增塑剂癸二酸二辛酯，四苯基硼酸钠（NaTPB）作为亲脂性阴离子添加剂制备光学传感器。光电二极管的响应基于阳离子交换膜，并表明在暴露于pH 5.7的含Zn2 +离子的Britton-Robinson缓冲溶液中时，吸光度信号发生显着变化。拟议中的传感器的线性范围为4.9？ 10-5-4.5 ?? 10-12 mol L-1，检出限为3.9 ?? 10-12 mol L-1。此外，获得了令人满意的分析灵敏度，包括用于测定锌离子的选择性，稳定性和重现性。感测膜的响应时间少于5分钟，具体取决于Zn2 +离子的浓度。该传感器已成功应用于自来水，河水和海水中锌的测定。

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