Carbon nanotube composite coated platinum electrode for detection of Ga(III)

被引：11

作者：

Abbaspour, A. ^{[1
]}

Khoshfetrat, Seyyed Mehdi ^{[1
]}

Sharghi, H. ^{[1
]}

Khalifeh, R. ^{[2
]}

机构：

[1] Shiraz Univ, Dept Chem, Coll Sci, Shiraz 7145685464, Iran

[2] Shiraz Univ Technol, Dept Chem, Fac Basic Sci, Shiraz 71555313, Iran

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2011年 / 185卷 / 01期

关键词：

Multi-walled carbon nanotube; Coated wire electrode; Gallium (III); Carbon-polyvinyl chloride composite; ION-SELECTIVE ELECTRODE; GALLIUM; MEMBRANE; ACID; FILM;

D O I：

10.1016/j.jhazmat.2010.09.002

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study demonstrates the application of composite multi-walled carbon nanotube (MWCNT) polyvinylchloride (MWNT-PVC) based on 7-(2-hydroxy-5-methoxybenzyl)-5,6,7,8,9,10-hexahydro-2H benzo [b][1,4,7,10,13] dioxa triaza cyclopentadecine-3,11(4H,12H)-dione ionophore for gallium sensor. The sensor shows a good Nernstian slope of 19.68 +/- 0.40 mV/decade in a wide linear range concentration of 7.9 x 10(-7) to 3.2 x 10(-2) M of Ga(NO3)(3). The detection limit of this electrode is 5.2 x 10(-7) M of Ga(NO3)(3). This proposed sensor is applicable in a pH range of 2.7-5.0. It has a short response time of about 10 s and has a good selectivity over nineteen various metal ions. The practical analytical utility of this electrode is demonstrated by measurement of Ga(III) in river water. (C) 2010 Published by Elsevier B.V.

引用

页码：101 / 106

页数：6

共 36 条

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