Development of an Optode for Detection of Trace Amounts of Hg2+ in Different Real Samples Based on Immobilization of Novel Tetradentate Schiff Bases Bearing Two Thiol Groups in PVC Membrane

被引：3

作者：

Aziz, Ayman A. Abdel ^{[1
,2
]}

Mohammed, Soha F. ^{[3
]}

El Gamel, Magdy M. ^{[3
,4
]}

机构：

[1] Ain Shams Univ, Dept Chem, Fac Sci, Cairo 11566, Egypt

[2] Univ Tabuk, Dept Chem, Fac Sci, Tabuk 71421, Saudi Arabia

[3] Zagazig Univ, Dept Chem, Fac Sci, Zagazig 44519, Egypt

[4] Shaqra Univ, Dept Chem, Coll Sci & Humanities, Aldawadmi 11911, Saudi Arabia

来源：

JOURNAL OF FLUORESCENCE | 2014年 / 24卷 / 03期

关键词：

NSSN Schiffbase; PVC membrane; Fluorescent sensor; Hg2+ ion; ATOMIC-ABSORPTION-SPECTROMETRY; OPTICAL CHEMICAL SENSOR; HIGHLY SELECTIVE FLUORESCENT; COLD VAPOR GENERATION; BULK OPTODE; STRIPPING VOLTAMMETRY; RHODAMINE-B; COLORIMETRIC CHEMODOSIMETER; SENSITIVE DETERMINATION; BIOLOGICAL SAMPLES;

D O I：

10.1007/s10895-014-1364-5

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A very sensitive and reversible optical chemical sensor based on a novel tetradentate Schiff base namely N.N(/)bis(2-aminothiophenol)benzene-1,2-dicarboxaldehyde (ATBD) immobilized within a plasticized PVC film for Hg2+ determination is described. At optimum conditions (i.e. pH 6.0), the proposed sensor displayed a linear response to Hg2+ over 1.0 x 10(-10) - 1.0 x 10(-2) mol L-1 with a limit of detection of 7.23 x 10(-11) mol L-1 (0.0145 mu gL(-1)). Moreover, the results revealed that, under batch condition, the sensor is fully reversible within a response time 35 s. In addition to its high stability and reproducibility, the sensor showed good selectivity towards Hg2+ ion with respect to common metal cations. The sensor was successfully applied for determination of Hg2+ ion in some real samples, including hair, urine and well water samples. The results were in good correlation with the data obtained using cold vapor atomic absorption spectrometry.

引用

页码：859 / 874

页数：16

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