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Reference type: Journal
Authors: Yaqub S, Latif U, Dickert FL
Article Title: Plastic antibodies as chemical sensor material for atrazine detection.
Publication date: 2011
Journal: Sensors and Actuators B: Chemical
Volume: 160
Issue: (1)
Page numbers: 227-233.
DOI: 10.1016/j.snb.2011.07.039
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0925400511006812

Abstract: Self-organization of monomers around template molecules, in bulk MIP generation, leads to selective molecular imprints with high sensitivity. Employing the host - guest chemistry, novel artificial receptors were fabricated via in situ MIP synthesis directly on gold electrodes of piezoelectric transducers (quartz crystal microbalance, QCM). The resultant label-free and robust biomimetic sensing material shows reversible as well as selective sensor responses for chlorotriazines moieties with minor structural differences. A detection limit of 20 ppb for atrazine was attained while showing selectivity up to 9 times higher than its metabolites des-ethyl-atrazine (DEA), des-isopropyl-atrazine (DIA), des-ethyl-des-isopropyl-atrazine (DEDIA) and structural analogues like simazine (SIM) and propazine (PRO). Furthermore, imprinted nanoparticles give linear characteristics over the wide range and show no saturation effects in comparison to bulk materials
Template and target information: atrazine
Author keywords: Pesticides detection, molecular imprinted polymers (MIPs), atrazine, Chlorotriazines, chemical sensors, Quartz crystal microbalances (QCMs), Mass-sensitive detection


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