Synthesis, characterization and using a new terpyridine moiety-based ion-imprinted polymer nanoparticle: sub-nanomolar detection of Pb(II) in biological and water samples

Synthesis, characterization and using a new terpyridine moiety-based ion-imprinted polymer... A highly selective lead-imprinted polymer was synthesized via a thermal precipitation polymerization technique based on a terpyridine-based ligand as the complexing agent. The synthesized polymer was successfully incorporated in a graphite paste electrode (GPE) as the recognition element for lead ion (Pb2+). Differential pulse anodic stripping voltammetry (DPASV) technique was used to transduce the binding events at the modified electrode. The imprinted polymer nanoparticles (IP-NPs) were synthesized by precipitation polymerization of ethylene glycol dimethacrylate as the cross-linker, 2,2′-azobisisobutyronitrile as the free radical initiator and 2,2′:6′,6″-terpyridine (terpy) as the recognition element. The sensing procedure is based on the accumulation of lead ions at − 1.0 V vs. Ag/AgCl. Afterward, the DPV was recorded by the sweeping potential in a positive direction to oxidize the accumulated ions, leading to the appearance of a significant anodic peak. The constructed IIP–GPE revealed a linear response toward Pb2+ over the concentration range from 0.4 to 10 nM (with the sensitivity of 693.95 nA nM−1 cm−2) and 10 nM to 1.0 µM (with the sensitivity of 580.25 µA µM−1 cm−2). The limit of detection (LOD) was evaluated to be 0.11 nM (for S/N = 3). The accuracy of the sensor was explored by analysis of a quality control material (QCMs, Seronorm™ urine REF NO 1011645) and different water samples. Selectivity studies showed no particular interference for detection of Pb(II). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Chemical Papers Springer Journals

Synthesis, characterization and using a new terpyridine moiety-based ion-imprinted polymer nanoparticle: sub-nanomolar detection of Pb(II) in biological and water samples

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Institute of Chemistry, Slovak Academy of Sciences
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering; Biochemistry, general; Medicinal Chemistry; Materials Science, general; Biotechnology
ISSN
0366-6352
eISSN
1336-9075
D.O.I.
10.1007/s11696-018-0523-6
Publisher site
See Article on Publisher Site

Abstract

A highly selective lead-imprinted polymer was synthesized via a thermal precipitation polymerization technique based on a terpyridine-based ligand as the complexing agent. The synthesized polymer was successfully incorporated in a graphite paste electrode (GPE) as the recognition element for lead ion (Pb2+). Differential pulse anodic stripping voltammetry (DPASV) technique was used to transduce the binding events at the modified electrode. The imprinted polymer nanoparticles (IP-NPs) were synthesized by precipitation polymerization of ethylene glycol dimethacrylate as the cross-linker, 2,2′-azobisisobutyronitrile as the free radical initiator and 2,2′:6′,6″-terpyridine (terpy) as the recognition element. The sensing procedure is based on the accumulation of lead ions at − 1.0 V vs. Ag/AgCl. Afterward, the DPV was recorded by the sweeping potential in a positive direction to oxidize the accumulated ions, leading to the appearance of a significant anodic peak. The constructed IIP–GPE revealed a linear response toward Pb2+ over the concentration range from 0.4 to 10 nM (with the sensitivity of 693.95 nA nM−1 cm−2) and 10 nM to 1.0 µM (with the sensitivity of 580.25 µA µM−1 cm−2). The limit of detection (LOD) was evaluated to be 0.11 nM (for S/N = 3). The accuracy of the sensor was explored by analysis of a quality control material (QCMs, Seronorm™ urine REF NO 1011645) and different water samples. Selectivity studies showed no particular interference for detection of Pb(II).

Journal

Chemical PapersSpringer Journals

Published: Jun 1, 2018

References

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