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Evaluation of N -Alkyl-bis- o -aminobenzamide Receptors for the Determination and Separation of Metal Ions by Fluorescence, UV-Visible Spectrometry and Zeta Potential.

Evaluation of N -Alkyl-bis- o -aminobenzamide Receptors for the Determination and Separation of Metal Ions by Fluorescence, UV-Visible Spectrometry and Zeta Potential.

Authors :
Martinez-Quiroz M
Aguilar-Martinez XE
Oropeza-Guzman MT
Valdez R
Lopez-Maldonado EA
Source :
Molecules (Basel, Switzerland) [Molecules] 2019 May 04; Vol. 24 (9). Date of Electronic Publication: 2019 May 04.
Publication Year :
2019

Abstract

This paper presents the synthesis and evaluation of physicochemical behavior of a new series of N -alkyl-bis- o -aminobenzamides (BOABs) in aqueous solution. The study was targeted to the complexing capacity of five metal ions (Fe <superscript>2+</superscript> , Cu <superscript>2+</superscript> , Cd <superscript>2+</superscript> , Hg <superscript>2+</superscript> and Pb <superscript>2+</superscript> ) of environmental concern as the medullar principle of a liquid phase sensor for its application in the determination of these metal ions due to its versatility of use. Molecular fluorescence, UV-visible and Zeta potential were measured for five BOABs and the effect of alkyl groups with different central chain length ( n = 3, 4, 6, 8 and 10) on physicochemical performance determined. The results have shown that these derivatives present higher sensibility and selectivity for Cu <superscript>2+</superscript> even in the presence of the other metal ions. An additional application test was done adding a pectin (0.1 wt %) solution to the BOAB-Cu <superscript>+2</superscript> complex to obtain a precipitate (flocs) as a potential selective separation process of Cu from aqueous solution. The solid was then lyophilized and analyzed by SEM-EDS, the images showed spheric forms containing Cu <superscript>+2</superscript> with diameter of approximately of 8 μm and 30 wt %.

Details

Language :
English
ISSN :
1420-3049
Volume :
24
Issue :
9
Database :
MEDLINE
Journal :
Molecules (Basel, Switzerland)
Publication Type :
Academic Journal
Accession number :
31060217
Full Text :
https://doi.org/10.3390/molecules24091737