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10.1007_s10895-023-03220-4.pdf (2.8 MB)

Design and Development of Inexpensive Paper-Based Chemosensors for Detection of Divalent Copper

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journal contribution
submitted on 2023-12-31, 08:43 and posted on 2023-12-31, 08:51 authored by Mithra Geetha, Kishor Kumar Sadasivuni, Maryam Al-Ejji, Nandagopal Sivadas, Bagmita Bhattacharyya, Farzana N. Musthafa, Sarya Alfarwati, Tamanna Jannat Promi, Sumayya Ali Ahmad, Sara Alabed, Dima Anwar Hijazi, Fatimatulzahraa Alsaedi, Faozia Nasser Al-Shaibah

Simple, portable, and low-cost paper-based sensors are alternative devices that have the potential to replace high-cost sensing technologies. The compatibility of the paper base biosensors for both chemical and biochemical accentuates its feasibility for application in clinical diagnosis, environmental monitoring, and food quality monitoring. High concentration of copper in blood serum and urine is associated with diseases like liver diseases, carcinomas, acute and chronic infections, rheumatoid arthritis, etc. Detection of copper concentration can give an early sign of Alzheimer disease. Apart from that genetic Wilson's disease can be detected by evaluating the concentration of copper in the urine. In view of the above advantages, a novel and the highly sensitive paper-based sensor has been designed for the selective detection of Cu2+ ions. The fast and highly sensitive chemiresistive multi-dye system sensor can detect Cu2+ ions selectively in as low as 2.23 ppm concentration. Least interference has been observed for counter ion in the detection of Cu2+. Copper chloride, nitrate, and acetate were used to validate the detection process. This assay provides a very high selectivity of Cu2+ ion over other metal cations such as Na+, Mg2+, Ca2+, etc. The easy preparation and high stability of dye solutions, easy functionalization of the paper-based sensors, high selectivity over other cations, low interference of counter anion, and significantly low detection limit of 2.23 ppm make it an effective Cu2+ ion sensor for real-time application in near future.

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Published in: Journal of Fluorescence
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Open Access funding provided by the Qatar National Library.



  • English


Springer Nature

Publication Year

  • 2023

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This Item is licensed under the Creative Commons Attribution 4.0 International License.

Institution affiliated with

  • Qatar University
  • Center for Advanced Materials - QU
  • Central Laboratories Unit - QU
  • College of Arts and Sciences - QU
  • Qatar University Health - QU
  • College of Pharmacy - QU HEALTH

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