Design and development of a portable resistive sensor based on α‐MnO2/GQD nanocomposites for trace quantification of Pb(II) in water

Abstract The occurrence of heavy metal ions in food chain is appearing to be a major problem for mankind. The traces of heavy metals, especially Pb(II) ions present in water bodies remains undetected, untreated, and it remains in the food cycle causing serious health hazards for human and livestock....

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Main Authors: Amit K. Gupta, Mansi Khanna, Souradeep Roy, Pankaj, Shalini Nagabooshanam, Ranjit Kumar, Shikha Wadhwa, Ashish Mathur
Format: Article
Language:English
Published: Wiley 2021-07-01
Series:IET Nanobiotechnology
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Online Access:https://doi.org/10.1049/nbt2.12042
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author Amit K. Gupta
Mansi Khanna
Souradeep Roy
Pankaj
Shalini Nagabooshanam
Ranjit Kumar
Shikha Wadhwa
Ashish Mathur
author_facet Amit K. Gupta
Mansi Khanna
Souradeep Roy
Pankaj
Shalini Nagabooshanam
Ranjit Kumar
Shikha Wadhwa
Ashish Mathur
author_sort Amit K. Gupta
collection DOAJ
description Abstract The occurrence of heavy metal ions in food chain is appearing to be a major problem for mankind. The traces of heavy metals, especially Pb(II) ions present in water bodies remains undetected, untreated, and it remains in the food cycle causing serious health hazards for human and livestock. The consumption of Pb(II) ions may lead to serious medical complications including multiple organ failure which can be fatal. The conventional methods of heavy metal detection are costly, time‐consuming and require laboratory space. There is an immediate need to develop a cost‐effective and portable sensing system which can easily be used by the common man without any technical knowhow. A portable resistive device with miniaturized electronics is developed with microfluidic well and α‐MnO2/GQD nanocomposites as a sensing material for the sensitive detection of Pb(II). α‐MnO2/GQD nanocomposites which can be easily integrated with the miniaturized electronics for real‐time on‐field applications. The proposed sensor exhibited a tremendous potential to be integrated with conventional water purification appliances (household and commercial) to give an indication of safety index for the drinking water. The developed portable sensor required low sample volume (200 µL) and was assessed within the Pb(II) concentration range of 0.001 nM to 1 uM. The Limit of Detection (LoD) and sensitivity was calculated to be 0.81 nM and 1.05 kΩ/nM/mm2, and was validated with the commercial impedance analyser. The shelf‐life of the portable sensor was found to be ∼45 days.
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spelling doaj-art-bcea96900ed0491d994d178b309624632025-02-03T01:31:55ZengWileyIET Nanobiotechnology1751-87411751-875X2021-07-0115550551110.1049/nbt2.12042Design and development of a portable resistive sensor based on α‐MnO2/GQD nanocomposites for trace quantification of Pb(II) in waterAmit K. Gupta0Mansi Khanna1Souradeep Roy2Pankaj3Shalini Nagabooshanam4Ranjit Kumar5Shikha Wadhwa6Ashish Mathur7Amity Institute of Nanotechnology Amity University Uttar Pradesh IndiaDepartment of Electronics and Communication Engineering Amity School of Engineering Amity University Uttar Pradesh IndiaAmity Institute of Nanotechnology Amity University Uttar Pradesh IndiaAmity Institute of Nanotechnology Amity University Uttar Pradesh IndiaAmity Institute of Nanotechnology Amity University Uttar Pradesh IndiaAmity Institute of Nanotechnology Amity University Uttar Pradesh IndiaAmity Institute of Nanotechnology Amity University Uttar Pradesh IndiaAmity Institute of Nanotechnology Amity University Uttar Pradesh IndiaAbstract The occurrence of heavy metal ions in food chain is appearing to be a major problem for mankind. The traces of heavy metals, especially Pb(II) ions present in water bodies remains undetected, untreated, and it remains in the food cycle causing serious health hazards for human and livestock. The consumption of Pb(II) ions may lead to serious medical complications including multiple organ failure which can be fatal. The conventional methods of heavy metal detection are costly, time‐consuming and require laboratory space. There is an immediate need to develop a cost‐effective and portable sensing system which can easily be used by the common man without any technical knowhow. A portable resistive device with miniaturized electronics is developed with microfluidic well and α‐MnO2/GQD nanocomposites as a sensing material for the sensitive detection of Pb(II). α‐MnO2/GQD nanocomposites which can be easily integrated with the miniaturized electronics for real‐time on‐field applications. The proposed sensor exhibited a tremendous potential to be integrated with conventional water purification appliances (household and commercial) to give an indication of safety index for the drinking water. The developed portable sensor required low sample volume (200 µL) and was assessed within the Pb(II) concentration range of 0.001 nM to 1 uM. The Limit of Detection (LoD) and sensitivity was calculated to be 0.81 nM and 1.05 kΩ/nM/mm2, and was validated with the commercial impedance analyser. The shelf‐life of the portable sensor was found to be ∼45 days.https://doi.org/10.1049/nbt2.12042chemical sensorschemical variables measurementleadmanganese compoundsmicrofluidicsmicrosensors
spellingShingle Amit K. Gupta
Mansi Khanna
Souradeep Roy
Pankaj
Shalini Nagabooshanam
Ranjit Kumar
Shikha Wadhwa
Ashish Mathur
Design and development of a portable resistive sensor based on α‐MnO2/GQD nanocomposites for trace quantification of Pb(II) in water
IET Nanobiotechnology
chemical sensors
chemical variables measurement
lead
manganese compounds
microfluidics
microsensors
title Design and development of a portable resistive sensor based on α‐MnO2/GQD nanocomposites for trace quantification of Pb(II) in water
title_full Design and development of a portable resistive sensor based on α‐MnO2/GQD nanocomposites for trace quantification of Pb(II) in water
title_fullStr Design and development of a portable resistive sensor based on α‐MnO2/GQD nanocomposites for trace quantification of Pb(II) in water
title_full_unstemmed Design and development of a portable resistive sensor based on α‐MnO2/GQD nanocomposites for trace quantification of Pb(II) in water
title_short Design and development of a portable resistive sensor based on α‐MnO2/GQD nanocomposites for trace quantification of Pb(II) in water
title_sort design and development of a portable resistive sensor based on α mno2 gqd nanocomposites for trace quantification of pb ii in water
topic chemical sensors
chemical variables measurement
lead
manganese compounds
microfluidics
microsensors
url https://doi.org/10.1049/nbt2.12042
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