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首页> 外文期刊>Journal of the Indian Chemical Society >Development of a new copper(II) ion-selective PVC membrane electrode based on tris(2-benzimidazolylmethyl)amine
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Development of a new copper(II) ion-selective PVC membrane electrode based on tris(2-benzimidazolylmethyl)amine

机译：基于三（2-苯并咪唑基甲基）胺的新型铜离子选择性PVC膜电极的研制

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摘要

A new poly(vinylchloride) based membrane, containing a synthesized ligand tris(2-benzimidazolylmethyl)amine as a membrane carrier, was used to fabricate a copper(H)-selective electrode. The membrane having the composition of various components, 60% o-NPOE in the presence of 32% PVC, 5% ionophore and 3% NaTPB as an anion excluder exhibits a near Nernstian potential response of 29.3 ± 0.4 mV decade~(-1) over a wide concentration range (1.0 x 10~(-8) to 1.0 x 10~(-2) M) with a detection limit of 7.2 X 10~(-8) between pH 2.5-8.5 with a fast response time (10 s). The selectivity coefficient values were determined by matched potential method (MPM), indicate excellent selectivity for Cu~(II) ions over a large number of mono-, di- and trivalent cations. The proposed electrode exhibits an adequate shelf life (-5 months) without any considerable divergence in potentials. It was successfully applied to the determination of copper in water samples of the river Yamuna collected at different sites of Delhi.
机译：包含合成的配体三（2-苯并咪唑基甲基）胺作为膜载体的新的基于聚氯乙烯的膜用于制造铜（H）选择电极。具有32％PVC，5％离子载体和3％NaTPB作为阴离子排斥剂的60％o-NPOE组成的膜，具有接近Nernstian的电位响应，为29.3±0.4 mV十进制〜（-1）。在较宽的浓度范围（1.0 x 10〜（-8）至1.0 x 10〜（-2）M）范围内，pH范围在2.5至8.5之间的检测极限为7.2 X 10〜（-8），响应时间短（10 s）。通过匹配电位法（MPM）确定了选择性系数值，表明在大量的单价，二价和三价阳离子上，Cu〜（II）离子具有优异的选择性。所提出的电极表现出足够的保存期限（-5个月），而电位没有任何明显的差异。它已成功地用于测定在德里不同地点采集的亚穆纳河水样中的铜。

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