Assessing heavy metal ion contamination through functionalized D-shaped optical fiber

Rajib Biswas, Rajon Bhuyan, Bijoy Sankar Boruah, Nirmal Mazumder

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


This work appraises a facile method for detecting lead ions in an aqueous medium. For this purpose, a D-shaped optical fiber is functionalized with gold nanoparticles with further accompaniment of aspartic acid. Subject to aggregation of gold nanoparticles as induced by Pb2+ ions, the throughput in terms of intensity via the functionalized fiber varies. Consequently, the modulated intensity is then assessed through optical detector. The attained findings show a remarkable response down to ppb scale especially for lead ion with least selectivity to other ions. Overall, the reported scheme renders a cost-effective compact scheme for sensing heavy metal ion contaminant in aqueous solution.

Original languageEnglish
Article number102996
JournalOptical Fiber Technology
Publication statusPublished - 09-2022

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering


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