Affiliation:
1. University Of Karachi
2. Department of Chemistry, University of Karachi
3. University of Karachi, Faculty of HEJ Research Institute of Chemistry, International Center for Chemical and Biological Sciences (ICCBS)
4. Pharmaceutical Research Center,PCSIR Labs Complex
Abstract
The present work describes the successful preparation of iron oxide nanoparticles (NSB1) stabilized with 4-((2-hydroxybenzylidene)amino)benzoic acid. The characterization has been achieved through ultraviolet visible (UV-Vis), fourier transform infra-red (FTIR) spectroscopy and scanning electron microscopy (SEM) with electron dispersive X-ray elemental analysis (EDX). These magnetic nanoparticles have exhibited significant chemosensing properties in the aqueous media to screen Cr3+, Cd2+, Li+, Co2+, Al3+, Pb2+, Ni2+ and Sr2+ ions. However, lead (Pb2+) ions have shown the highest selectivity as compared to other metal ions without any interference in the competitive ion study. The detection limit of Pb2+ ions was found to be 1.7 µM by this nanosensor. The binding ratio and stoichiometry was found to be 1:1 as measured by Job’s plot. The binding strength was also computed through Benesei-Hildebrand equation.
Publisher
The Turkish Chemical Society
Reference30 articles.
1. 1. Zhu G, Zhang C yang. Functional nucleic acid-based sensors for heavy metal ion assays. Analyst. 2014 Sep 25;139(24):6326–42.
2. 2. Kim HN, Ren WX, Kim JS, Yoon J. Fluorescent and colorimetric sensors for detection of lead, cadmium, and mercury ions. Chem Soc Rev. 2012;41(8):3210–44.
3. 3. Lin YW, Huang CC, Chang HT. Gold nanoparticle probes for the detection of mercury, lead and copper ions. Analyst. 2011;136(5):863–71.
4. 4. Khan H, Jamaluddin Ahmed M, Iqbal Bhanger M. A simple spectrophotometric method for the determination of trace level lead in biological samples in the presence of aqueous micellar solutions. Spectroscopy. 2006;20(5–6):285–97.
5. 5. Clayton GD, Clayton FE. Patty’s industrial hygiene and toxicology. Vol. 2A. Toxicology. John Wiley & Sons, Inc., Baffins Lane, Chichester, Sussex PO19 1DU; 1981. ISBN: 978-0-471-16042-7.