112251-31-7Relevant academic research and scientific papers
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
Aziz, Ayman A. Abdel,Mohammed, Soha F.,El Gamel, Magdy M.
, p. 859 - 874 (2014)
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 Hg 2+ determination is described. At optimum conditions (i.e. pH 6.0), the proposed sensor displayed a linear response to Hg2+ over 1.0×10-10 - 1.0×10-2 mol L-1 with a limit of detection of 7.23×10-11 mol L-1 (0.0145 μgL-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.
