Potentiometric Study of Coated Graphite Electrode and Polymeric Membrane Electrode for the Determination of Sm3+Ion

被引：7

作者：

Upadhyay, Anjali ^{[1
]}

Singh, A. K. ^{[1
]}

Jain, A. K. ^{[1
]}

Gupta, Vinod Kumar ^{[1
]}

Bandi, Koteswara Rao ^{[1
]}

机构：

[1] Indian Inst Technol Roorkee, Dept Chem, Roorkee 247667, Uttar Pradesh, India

来源：

ELECTROANALYSIS | 2012年 / 24卷 / 07期

关键词：

Polymeric membrane electrodes; Coated graphite electrodes; Potentiometric electrodess; Ion selective electrodes; ION-SELECTIVE ELECTRODES; SCHIFF-BASES; PVC MEMBRANE; URANYL IONS; SENSOR; SAMARIUM(III); DIBENZO-24-CROWN-8; BORATOPHOSPHATE; FABRICATION; IONOPHORES;

D O I：

10.1002/elan.201200050

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Preliminary studies on the two Schiff bases N2-((3H-indol-3-yl)methylene)-6-phenyl-1,3,5-triazine-2,4-diamine (L1) and N2,N4-bis((3H-indol-3-yl)methylene)-6-phenyl-1,3,5-triazine-2,4-diamine (L2) have shown that they can act as Sm3+ selective electrodes. The performances of a polymeric membrane electrode and a coated graphite electrode based on L2 were compared and the CGE proved to be better, as it shows a low detection limit of 1.8x10-8 mol?L-1, a Nernstian slope of 19.6 +/- 0.4 mV decade-1 of activity with a response time of 11 s in the pH range of 3.09.0. The CGE was used to determine Sm3+ in medicinal plants and soil samples. It was also used to determine fluoride ions in mouthwash samples and in toothpaste.

引用

页码：1630 / 1638

页数：9

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