The development of a portable IoT-enabled aqueous Sulphur sensor

Brady Shearan*, Fowzia Akhter, S. C. Mukhopadhyay

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review


The research proposed is in relation to real-time detection of Sulphur ions within aqueous mediums, with the future potential of detection of Hydrogen Sulfide (H2S) in wastewater systems. Electrochemical Impedance Spectroscopy (EIS) is utilized alongside a novel interdigital capacitive sensor. The synthesis of graphene-based polymer composite thin films for Sulphur ion absorption are detailed. Sampled Sulphur measurements are conducted by using the presented thin-film coatings. The sensitivity curve obtained for a range of Sulphur concentrations from 0.5 ppm to 50 ppm, highlights the promising initial results, and strong potential for use within detection of H2S. The coating of Reduced Graphene Oxide (rGO) with silver nanoparticles (AgNPs) exhibits an enhanced sensitivity towards Sulphur ions. A portable IoT-based system is also presented for detection of Sulphur irrespective of time and place. This paper provides a detailed approach from conception to employment of the developed system.

Original languageEnglish
Title of host publicationSensing technology
Subtitle of host publicationproceedings of ICST 2022
EditorsNagender Kumar Suryadevara, Boby George, Krishanthi P. Jayasundera, Joyanta Kumar Roy, Subhas Chandra Mukhopadhyay
Place of PublicationCham, Switzerland
PublisherSpringer, Springer Nature
Number of pages14
ISBN (Electronic)9783030988869
ISBN (Print)9783030988852
Publication statusPublished - 2022
EventInternational Conference on Sensing Technology (14th : ICST 2022) - Indian Institute of Technology Madras, Chennai, India
Duration: 16 Jan 202218 Jan 2022
Conference number: 14th

Publication series

NameLecture Notes in Electrical Engineering
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119


ConferenceInternational Conference on Sensing Technology (14th : ICST 2022)
Abbreviated titleICST 2022


  • Interdigital capacitive sensor
  • Sulphur
  • Hydrogen Sulfide (H₂S)
  • Reduced Graphene Oxide (rGO)
  • Internet of Things (IoT)


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