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Tailor-Made Specific Recognition of Cyromazine Pesticide Integrated in a Potentiometric Strip Cell for Environmental and Food Analysis

Screen-printed ion-selective electrodes were designed and characterized for the assessment of cyromazine (CYR) pesticide. A novel approach is to design tailor-made specific recognition sites in polymeric membranes using molecularly imprinted polymers for cyromazine (CR) determination (sensor I). Ano...

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Autores principales: Abdalla, Nashwa S., E. Amr, Abd El-Galil, S. M. El-Tantawy, Aliaa, A. Al-Omar, Mohamed, H. Kamel, Ayman, Khalifa, Nagy M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6780653/
https://www.ncbi.nlm.nih.gov/pubmed/31546880
http://dx.doi.org/10.3390/polym11091526
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author Abdalla, Nashwa S.
E. Amr, Abd El-Galil
S. M. El-Tantawy, Aliaa
A. Al-Omar, Mohamed
H. Kamel, Ayman
Khalifa, Nagy M.
author_facet Abdalla, Nashwa S.
E. Amr, Abd El-Galil
S. M. El-Tantawy, Aliaa
A. Al-Omar, Mohamed
H. Kamel, Ayman
Khalifa, Nagy M.
author_sort Abdalla, Nashwa S.
collection PubMed
description Screen-printed ion-selective electrodes were designed and characterized for the assessment of cyromazine (CYR) pesticide. A novel approach is to design tailor-made specific recognition sites in polymeric membranes using molecularly imprinted polymers for cyromazine (CR) determination (sensor I). Another sensor (sensor II) is the plasticized PVC membrane incorporating cyromazine/tetraphenyl borate ion association complex. The charge-transfer resistance and water layer reached its minimal by incorporating Polyaniline (PANI) solid-contact ISE. The designed electrodes demonstrated Nernstain response over a linear range 1.0 × 10(−2)–5.2 × 10(−6) and 1.0 × 10(−2)–5.7 × 10(−5) M with a detection limit 2.2 × 10(−6) and 8.1 × 10(−6) M for sensors I and II, respectively. The obtained slopes were 28.1 ± 2.1 (r(2) = 0.9999) and 36.4 ± 1.6 (r(2) = 0.9991) mV/decade, respectively. The results showed that the proposed electrodes have a fast and stable response, good reproducibility, and applicability for direct measurement of CYR content in commercial pesticide preparations and soil samples sprayed with CYR pesticide. The results obtained from the proposed method are fairly in accordance with those using the standard official method.
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spelling pubmed-67806532019-10-30 Tailor-Made Specific Recognition of Cyromazine Pesticide Integrated in a Potentiometric Strip Cell for Environmental and Food Analysis Abdalla, Nashwa S. E. Amr, Abd El-Galil S. M. El-Tantawy, Aliaa A. Al-Omar, Mohamed H. Kamel, Ayman Khalifa, Nagy M. Polymers (Basel) Article Screen-printed ion-selective electrodes were designed and characterized for the assessment of cyromazine (CYR) pesticide. A novel approach is to design tailor-made specific recognition sites in polymeric membranes using molecularly imprinted polymers for cyromazine (CR) determination (sensor I). Another sensor (sensor II) is the plasticized PVC membrane incorporating cyromazine/tetraphenyl borate ion association complex. The charge-transfer resistance and water layer reached its minimal by incorporating Polyaniline (PANI) solid-contact ISE. The designed electrodes demonstrated Nernstain response over a linear range 1.0 × 10(−2)–5.2 × 10(−6) and 1.0 × 10(−2)–5.7 × 10(−5) M with a detection limit 2.2 × 10(−6) and 8.1 × 10(−6) M for sensors I and II, respectively. The obtained slopes were 28.1 ± 2.1 (r(2) = 0.9999) and 36.4 ± 1.6 (r(2) = 0.9991) mV/decade, respectively. The results showed that the proposed electrodes have a fast and stable response, good reproducibility, and applicability for direct measurement of CYR content in commercial pesticide preparations and soil samples sprayed with CYR pesticide. The results obtained from the proposed method are fairly in accordance with those using the standard official method. MDPI 2019-09-19 /pmc/articles/PMC6780653/ /pubmed/31546880 http://dx.doi.org/10.3390/polym11091526 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Abdalla, Nashwa S.
E. Amr, Abd El-Galil
S. M. El-Tantawy, Aliaa
A. Al-Omar, Mohamed
H. Kamel, Ayman
Khalifa, Nagy M.
Tailor-Made Specific Recognition of Cyromazine Pesticide Integrated in a Potentiometric Strip Cell for Environmental and Food Analysis
title Tailor-Made Specific Recognition of Cyromazine Pesticide Integrated in a Potentiometric Strip Cell for Environmental and Food Analysis
title_full Tailor-Made Specific Recognition of Cyromazine Pesticide Integrated in a Potentiometric Strip Cell for Environmental and Food Analysis
title_fullStr Tailor-Made Specific Recognition of Cyromazine Pesticide Integrated in a Potentiometric Strip Cell for Environmental and Food Analysis
title_full_unstemmed Tailor-Made Specific Recognition of Cyromazine Pesticide Integrated in a Potentiometric Strip Cell for Environmental and Food Analysis
title_short Tailor-Made Specific Recognition of Cyromazine Pesticide Integrated in a Potentiometric Strip Cell for Environmental and Food Analysis
title_sort tailor-made specific recognition of cyromazine pesticide integrated in a potentiometric strip cell for environmental and food analysis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6780653/
https://www.ncbi.nlm.nih.gov/pubmed/31546880
http://dx.doi.org/10.3390/polym11091526
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