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

التفاصيل البيبلوغرافية
العنوان:	Design and development of a portable resistive sensor based on α‐MnO2/GQD nanocomposites for trace quantification of Pb(II) in water
المؤلفون:	Amit K. Gupta, Mansi Khanna, Souradeep Roy, Pankaj, Shalini Nagabooshanam, Ranjit Kumar, Shikha Wadhwa, Ashish Mathur
المصدر:	IET Nanobiotechnology, Vol 15, Iss 5, Pp 505-511 (2021)
بيانات النشر:	Wiley, 2021.
سنة النشر:	2021
المجموعة:	LCC:Biotechnology
مصطلحات موضوعية:	chemical sensors, chemical variables measurement, lead, manganese compounds, microfluidics, microsensors, Biotechnology, TP248.13-248.65
الوصف:	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.
نوع الوثيقة:	article
وصف الملف:	electronic resource
اللغة:	English
تدمد:	1751-875X 1751-8741 30962463
Relation:	https://doaj.org/toc/1751-8741; https://doaj.org/toc/1751-875X
DOI:	10.1049/nbt2.12042
URL الوصول:	https://doaj.org/article/bcea96900ed0491d994d178b30962463
رقم الأكسشن:	edsdoj.bcea96900ed0491d994d178b30962463
قاعدة البيانات:	Directory of Open Access Journals

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الوصف
تدمد:	1751875X 17518741 30962463
DOI:	10.1049/nbt2.12042