Optical sensor based on 1,3-di(2-methoxyphenyl)triazene for monitoring trace amounts of mercury(II) in water samples

被引：29

作者：

Gholivand, Mohammad Bagher ^{[1
]}

Mohammadi, Moslem ^{[2
]}

Rofouei, Mohammad Kazem ^{[2
]}

机构：

[1] Razi Univ, Dept Chem, Kermanshah, Iran

[2] Tarbiat Moallem Univ, Fac Chem, Tehran, Iran

来源：

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2010年 / 30卷 / 06期

关键词：

Optical sensor; Mercury(II); PVC membrane; 1,3-di(2-methoxyphenyl) triazene (MPT); TRIACETYLCELLULOSE MEMBRANE; FLUORESCENCE SPECTROMETRY; OPTODE MEMBRANE; ION; ELECTRODE; IMMOBILIZATION; EXTRACTION; COMPLEXATION; RECOGNITION; DITHIZONE;

D O I：

10.1016/j.msec.2010.03.021

中图分类号：

TB3 [工程材料学]; R318.08 [生物材料学];

学科分类号：

0805 ; 080501 ; 080502 ;

摘要：

A new optical sensor for highly sensitive and selective determination of mercury(II) ion in aqueous solutions is developed. The mercury sensing membrane was prepared by incorporating 1,3-di(2-methoxyphenyl)triazene (MPT) as chromoionophore in the plasticized PVC membrane containing tris(2-ethylhexyl)phosphate (TEHP) as plasticizer. The proposed sensor displays a wide linear range of 9.0 x 10(-10)-2.5 x 10(-7) M with a low detection limit of 2.0 x 10(-10) M in aqueous solutions at pH 4.0. This sensor has a relatively fast response time of less than 5 min. In addition to high stability and reproducibility, it shows a unique selectivity towards Hg2+ ion with respect to common coexisting cations. The sensor can readily be regenerated by exposure to a solution of sodium iodide (0.01 M). The proposed optode was applied to the determination of Hg2+ in water samples. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：847 / 852

页数：6

共 43 条

[1]

Alizadeh N, 1999, POL J CHEM, V73, P915

[2] An ion selective electrode for mercury(II) based on mercury(II) complex of poly(4-vinyl pyridine) [J].