All Solid-State Poly (Vinyl Chloride) Membrane Potentiometric Sensor Integrated with Nano-Beads Imprinted Polymers for Sensitive and Rapid Detection of Bispyribac Herbicide as Organic Pollutant
All-solid-state potentiometric sensors were prepared by using polyaniline (PANI) as the solid contact material. A film of PANI (thickness approximately being 0.25 µm) was deposited on a solid substrate (carbon screen printed platform). The PANI layer was subsequently coated with an ion-sele...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2019-02-01
|
Series: | Molecules |
Subjects: | |
Online Access: | https://www.mdpi.com/1420-3049/24/4/712 |
id |
doaj-ad4ce1d01ffe4ba8abc12c16d3680947 |
---|---|
record_format |
Article |
spelling |
doaj-ad4ce1d01ffe4ba8abc12c16d36809472020-11-25T01:29:15ZengMDPI AGMolecules1420-30492019-02-0124471210.3390/molecules24040712molecules24040712All Solid-State Poly (Vinyl Chloride) Membrane Potentiometric Sensor Integrated with Nano-Beads Imprinted Polymers for Sensitive and Rapid Detection of Bispyribac Herbicide as Organic PollutantNashwa S. Abdalla0Maha A. Youssef1H. Algarni2Nasser S. Awwad3Ayman H. Kamel4Chemistry Department, Faculty of Science, Ain Shams University, P.O. 11566 Cairo, EgyptAnalytical Chemistry and Control Department, Hot Laboratories Center, Atomic Energy Authority of Egypt, P.O. 13759 Abu Zaabal, Cairo, EgyptDepartment of Physics, Faculty of Science, King Khalid University, P.O. Box 9004 Abha, Saudi ArabiaDepartment of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004 Abha, Saudi ArabiaChemistry Department, Faculty of Science, Ain Shams University, P.O. 11566 Cairo, EgyptAll-solid-state potentiometric sensors were prepared by using polyaniline (PANI) as the solid contact material. A film of PANI (thickness approximately being 0.25 µm) was deposited on a solid substrate (carbon screen printed platform). The PANI layer was subsequently coated with an ion-selective membrane (ISM) containing uniform-sized molecularly imprinted nanoparticles to produce a solid-contact ion-selective electrode (SC/ISE) for bispyribac herbicide (sensor I). In addition, aliquat 336 was also used as an ion exchanger in plasticized PVC membrane (sensor II). The proposed sensors revealed a remarkably improved sensitivity towards bispyribac ions with anionic slopes of −47.8 ± 1.1 (r<sup>2</sup> = 0.9995) and −44.4 ± 1.4 (r<sup>2</sup> = 0.9997) mV/decade over a linear range 1.0 × 10<sup>−2</sup>⁻8.6 × 10<sup>−6</sup> M, 1.0 × 10<sup>−2</sup>⁻9.0 × 10<sup>−6</sup> M and detection limits of 1.33 and 1.81 µg/mL for sensors I and II, respectively.Selectivity of both sensors is significantly high for different common pesticides and inorganic anions. The potential stability of the SC/ISEs was studied using chronopotentiometry. Electrochemical impedance spectrometry was used to understand the charge-transfer mechanisms of the different types of ion-selective electrodes studied. The impedance response of the electrodes was modelled by using equivalent electrical circuits. The sensors were used for a direct measurement of the bispyribac content in commercial herbicide formulations and soil samples collected from agricultural lands planted with rice and sprayed with bispyribac herbicide. The results agree fairly well with data obtained using HPLC method.https://www.mdpi.com/1420-3049/24/4/712bispyribac sodiumsolid-contact ISEsscreen-printedmolecularly imprinted polymersorganic pollutant |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Nashwa S. Abdalla Maha A. Youssef H. Algarni Nasser S. Awwad Ayman H. Kamel |
spellingShingle |
Nashwa S. Abdalla Maha A. Youssef H. Algarni Nasser S. Awwad Ayman H. Kamel All Solid-State Poly (Vinyl Chloride) Membrane Potentiometric Sensor Integrated with Nano-Beads Imprinted Polymers for Sensitive and Rapid Detection of Bispyribac Herbicide as Organic Pollutant Molecules bispyribac sodium solid-contact ISEs screen-printed molecularly imprinted polymers organic pollutant |
author_facet |
Nashwa S. Abdalla Maha A. Youssef H. Algarni Nasser S. Awwad Ayman H. Kamel |
author_sort |
Nashwa S. Abdalla |
title |
All Solid-State Poly (Vinyl Chloride) Membrane Potentiometric Sensor Integrated with Nano-Beads Imprinted Polymers for Sensitive and Rapid Detection of Bispyribac Herbicide as Organic Pollutant |
title_short |
All Solid-State Poly (Vinyl Chloride) Membrane Potentiometric Sensor Integrated with Nano-Beads Imprinted Polymers for Sensitive and Rapid Detection of Bispyribac Herbicide as Organic Pollutant |
title_full |
All Solid-State Poly (Vinyl Chloride) Membrane Potentiometric Sensor Integrated with Nano-Beads Imprinted Polymers for Sensitive and Rapid Detection of Bispyribac Herbicide as Organic Pollutant |
title_fullStr |
All Solid-State Poly (Vinyl Chloride) Membrane Potentiometric Sensor Integrated with Nano-Beads Imprinted Polymers for Sensitive and Rapid Detection of Bispyribac Herbicide as Organic Pollutant |
title_full_unstemmed |
All Solid-State Poly (Vinyl Chloride) Membrane Potentiometric Sensor Integrated with Nano-Beads Imprinted Polymers for Sensitive and Rapid Detection of Bispyribac Herbicide as Organic Pollutant |
title_sort |
all solid-state poly (vinyl chloride) membrane potentiometric sensor integrated with nano-beads imprinted polymers for sensitive and rapid detection of bispyribac herbicide as organic pollutant |
publisher |
MDPI AG |
series |
Molecules |
issn |
1420-3049 |
publishDate |
2019-02-01 |
description |
All-solid-state potentiometric sensors were prepared by using polyaniline (PANI) as the solid contact material. A film of PANI (thickness approximately being 0.25 µm) was deposited on a solid substrate (carbon screen printed platform). The PANI layer was subsequently coated with an ion-selective membrane (ISM) containing uniform-sized molecularly imprinted nanoparticles to produce a solid-contact ion-selective electrode (SC/ISE) for bispyribac herbicide (sensor I). In addition, aliquat 336 was also used as an ion exchanger in plasticized PVC membrane (sensor II). The proposed sensors revealed a remarkably improved sensitivity towards bispyribac ions with anionic slopes of −47.8 ± 1.1 (r<sup>2</sup> = 0.9995) and −44.4 ± 1.4 (r<sup>2</sup> = 0.9997) mV/decade over a linear range 1.0 × 10<sup>−2</sup>⁻8.6 × 10<sup>−6</sup> M, 1.0 × 10<sup>−2</sup>⁻9.0 × 10<sup>−6</sup> M and detection limits of 1.33 and 1.81 µg/mL for sensors I and II, respectively.Selectivity of both sensors is significantly high for different common pesticides and inorganic anions. The potential stability of the SC/ISEs was studied using chronopotentiometry. Electrochemical impedance spectrometry was used to understand the charge-transfer mechanisms of the different types of ion-selective electrodes studied. The impedance response of the electrodes was modelled by using equivalent electrical circuits. The sensors were used for a direct measurement of the bispyribac content in commercial herbicide formulations and soil samples collected from agricultural lands planted with rice and sprayed with bispyribac herbicide. The results agree fairly well with data obtained using HPLC method. |
topic |
bispyribac sodium solid-contact ISEs screen-printed molecularly imprinted polymers organic pollutant |
url |
https://www.mdpi.com/1420-3049/24/4/712 |
work_keys_str_mv |
AT nashwasabdalla allsolidstatepolyvinylchloridemembranepotentiometricsensorintegratedwithnanobeadsimprintedpolymersforsensitiveandrapiddetectionofbispyribacherbicideasorganicpollutant AT mahaayoussef allsolidstatepolyvinylchloridemembranepotentiometricsensorintegratedwithnanobeadsimprintedpolymersforsensitiveandrapiddetectionofbispyribacherbicideasorganicpollutant AT halgarni allsolidstatepolyvinylchloridemembranepotentiometricsensorintegratedwithnanobeadsimprintedpolymersforsensitiveandrapiddetectionofbispyribacherbicideasorganicpollutant AT nassersawwad allsolidstatepolyvinylchloridemembranepotentiometricsensorintegratedwithnanobeadsimprintedpolymersforsensitiveandrapiddetectionofbispyribacherbicideasorganicpollutant AT aymanhkamel allsolidstatepolyvinylchloridemembranepotentiometricsensorintegratedwithnanobeadsimprintedpolymersforsensitiveandrapiddetectionofbispyribacherbicideasorganicpollutant |
_version_ |
1725097480623751168 |