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基于1,3-双(2-氰基苯)三氮烯的涂覆石墨增塑PVC膜电极流动注射电位法测定Cd2+离子

Flow Injection Potentiometric Determination of Cd2+ Ions Using a Coated Graphite Plasticized PVC-Membrane Electrode Based on 1, 3-Bis(2-cyanobenzene)triazene.

作者信息

Shamsipur Mojtaba, Sahari Shokat, Payehghadr Mahmood, Alizadeh Kamal

出版信息

Acta Chim Slov. 2011 Sep;58(3):555-62.

PMID:24062116
Abstract

1, 3-Bis(2-cyanobenzene)triazene, L, was used as a suitable ionophore for the fabrication of a new PVC-based polymeric membrane coated graphite electrode for selective sensing of Cd2+ ion. The electrode exhibited a selective linear Nernstian response to Cd2+ ion at an optimal pH range of 6-9 with a limit of detection of 8.0 × 10-6 M and a fast response time of about 2 s. The electrode was used as a proper detection system in flow-injection potentiometry of cadmium ion and resulted in well defined peaks for cadmium ions with stable baseline, excellent reproducibility and high sampling rates of over 100 injections per hour. It showed good stability, reproducibility and fast response time. The practical utility of the proposed system has also been reported.

摘要

1,3 - 双(2 - 氰基苯)三氮烯(L)被用作一种合适的离子载体,用于制备一种新型的基于聚氯乙烯的聚合物膜涂覆石墨电极,用于选择性传感Cd²⁺离子。该电极在6 - 9的最佳pH范围内对Cd²⁺离子表现出选择性线性能斯特响应,检测限为8.0×10⁻⁶ M,响应时间约为2 s。该电极被用作镉离子流动注射电位法中的合适检测系统,产生了镉离子的清晰峰,基线稳定,重现性极佳,每小时采样率超过100次进样。它表现出良好的稳定性、重现性和快速响应时间。还报道了该 proposed 系统的实际应用。 (注:原文中“proposed”未翻译,因为不清楚具体含义,需根据上下文确定准确译法)

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