Proceedings | |
A Highly Sensitive Impedimetric Metamitron Microsensor Based on All-Solid-State Membrane Using a New Ion-Pair Complex, [3,3â²-Co(1,2-closo-C2B9H11)2]â[C10H11ON4]+ | |
Baraket, Abdoullatif1  Gallardo-Gonzalez, Juan2  Ayroud, Zakaria3  Hangouet, Marie4  | |
[1] Author to whom correspondence should be addressed.;Centro Nacional de Microelectrónica (IMB-CSIC) Campus UAB, Bellaterra, 08193 Barcelona, Spain;Institut des Sciences Analytiques, Université de Lyon, UMR 5280, CNRS, Université Lyon 1, ENS Lyon-5, rue de la Doua, F-69100 Villeurbanne, France;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9â12 September 2018 | |
关键词: metamitron; ion-pair complex; microsensor; metallocarboranes; herbicides; triazines; | |
DOI : 10.3390/proceedings2131093 | |
学科分类:社会科学、人文和艺术(综合) | |
来源: mdpi | |
【 摘 要 】
An all-solid-state impedimetric microsensor based on impedimetric measurements for detecting the herbicide metamitron (MM) is reported in the present work. For this purpose, a novel metamitron ionophore has been prepared. It was based on the isolation of the metamitron monoprotonated form coupled to the metallocarborane anion, cobalt bis (dicarbollide), ([3,3′-Co(1,2-closo-C2B9H11)2]−) as an ion-pair complex of the type [3,3′-Co(1,2-closo-C2B9H11)2]−[C10H11ON4]+. Once the ion-pair complex was synthetized, it was incorporated to a PVC-type membrane including o-Nitrophenyloctylether (o-NPOE) as plasticizer. The membrane was then drop-cast on top of polypyrrole-modified gold working microelectrodes. A quick response of 30 s has been provided by the microsensor in the range of metamitron concentrations between 10−8 M and 10−4 M with a limit of detection of 10−8 M. Furthermore, it was highly selective toward metamitron, when compared to some possible interfering compounds as imazapic and carbetamide.
【 授权许可】
CC BY
【 预 览 】
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