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| Content Provider | IET Digital Library |
|---|---|
| Author | Dugyala, Raju Gul, Mir Zahoor Kumar, Sriramoju Manoj Beedu, Sashidhar Rao |
| Abstract | A simple, rapid and a cost-effective colorimetric method for detection of Hg2+ in an aqueous system using silver nanoparticle (AgNP) has been developed in the present study. AgNPs were synthesised using gum kondagogu (GK), a natural biopolymer that acts as both reducing and stabilising agent. The stability of GK-AgNPs composites was determined by zeta potential and was observed to be −30.43 mV. The yellow colour spot on the nitrocellulose membrane turned colourless at Hg2+ concentration of 20 ppm in aqueous solution, which can be observed visually. By using inductively coupled plasma mass spectrometry, it was observed that as the concentration of Hg2+ increases the Ag concentration decreased. Further, scanning electron microscopy and energy-dispersive X-ray spectroscopy were used to confirm the morphological changes on membrane before and after treating with Hg2 +. The interference of other metal ions was also studied to validate Hg2+ specificity. This method was successfully employed to screen Hg2+ in industrial effluents. In summary, this study entails the development of a nitrocellulose membrane based mercury sensor that has practical applicability for on-site screening of Hg2+ contamination in the aqueous system. |
| Starting Page | 604 |
| Ending Page | 608 |
| Page Count | 5 |
| Volume Number | 14 |
| e-ISSN | 17500443 |
| Issue Number | Issue 6, May (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/mnl/14/6 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/mnl.2018.5314 |
| Journal | Micro & Nano Letters |
| Publisher Date | 2019-05-29 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | AgNP Aqueous Mercury Aqueous Solution Aqueous System Biotechnology Biotechnology Industry Chemical Sensor Colorimetry Contamination Contamination Remediation Cost-effective Colorimetric Method Effluents Electrokinetic Effects Energy-dispersive X-Ray Spectroscopy Environmental Issues Environmental Science Environmental Science Technology GK-AgNPs CompoSite Gum Kondagogu Hg2+ Inductively Coupled Plasma Mass Spectrometry Industrial Processes Membranes Mercury (metal) Nanoparticle Natural Biopolymer Nitrocellulose Membrane Based Mercury Sensor On-site Screening Rapid Screening Reducing Stabilising Agent Scanning Electron Microscopy Silver Compound Silver Nanoparticle Strip-based Nanosilver Biocomposite Toxicology Water X-Ray Chemical Analysis Yellow Colour Spot |
| Content Type | Text |
| Resource Type | Article |
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