A novel copper (II) selective sensor based on Dimethyl 4, 4′ (o-phenylene) bis(3-thioallophanate) in PVC matrix

被引：347

作者：

Gupta, Vinod Kumar ^{[1
,2
]}

Singh, L. P. ^{[3
]}

Singh, Rakesh ^{[4
]}

Upadhyay, N. ^{[5
]}

Kaur, S. P. ^{[5
]}

Sethi, Bhavana ^{[6
]}

机构：

[1] Indian Inst Technol, Dept Chem, Roorkee, Uttarakhand, India

[2] King Fahd Univ Petr & Minerals, Dept Chem, Dhahran 31261, Saudi Arabia

[3] CSIR Cent Bldg Res Inst, Roorkee, Uttarakhand, India

[4] DBS PG Coll, Dept Chem, Dehra Dun, Uttarakhand, India

[5] Lovely Profess Univ, Jalandhar, Punjab, India

[6] MKP PG Coll, Dept Chem, Dehra Dun, Uttarakhand, India

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2012年 / 174卷

关键词：

PVC membrane; Copper (II); Sensor; Potentiometry; Dimethyl 4,4 '-(o-phenylene) bis(3-thioallophanate); MEMBRANE POTENTIOMETRIC SENSOR; POLY(VINYL CHLORIDE) MATRIX; SCHIFF-BASE; PHARMACEUTICAL FORMULATIONS; ELECTROCHEMICAL SENSOR; BIOLOGICAL-FLUIDS; NEUTRAL CARRIERS; URANYL IONS; ELECTRODE; ACID;

D O I：

10.1016/j.molliq.2012.07.016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The construction, performance characteristics and application of a novel copper (II) membrane sensor based on a new Dimethyl 4, 4'-(o-phenylene)bis(3-thioallophanate) are reported in this paper. The designed sensor exhibited a wide linear response with a slope of 30.3 mV per decade over the concentration range of 9.8 x 10(-6)-1.0 x 10(-1) M. The potentiometric response is independent on the pH of the solution in the range of 3.1-7.6. The electrode shows a response time of 20 s. The proposed electrode can be used for at least two months without any considerable divergence in potentials. It exhibits very good selectivity relative to a wide variety of alkali, alkaline earth, transition and heavy metal ions. The developed sensor was used for the quantitative determination of Cu (II) ions both in synthetic and real samples. The electrode assembly was also used as an indicator electrode in the potentiometric titration of Cu2+ with EDTA. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：11 / 16

页数：6

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