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https://hdl.handle.net/2440/85960
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dc.contributor.author | Kumeria, T. | - |
dc.contributor.author | Rahman, M. | - |
dc.contributor.author | Santos, A. | - |
dc.contributor.author | Ferre-Borrull, J. | - |
dc.contributor.author | Marsal, L. | - |
dc.contributor.author | Losic, D. | - |
dc.date.issued | 2014 | - |
dc.identifier.citation | ACS Applied Materials and Interfaces, 2014; 6(15):12971-12978 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.issn | 1944-8252 | - |
dc.identifier.uri | http://hdl.handle.net/2440/85960 | - |
dc.description.abstract | Herein, we present an ultrasensitive, cost-competitive, and portable optical sensing system for detecting ionic mercury in environmental water. This analytical system combines structurally engineered and chemically modified nanoporous anodic alumina rugate filters (NAA-RFs) with reflection spectroscopy (RfS). The sensing performance of the proposed system is assessed through several tests, establishing its sensing performance (i.e., linear working range from 1 to 100 μM of Hg(2+), low limit of detection 1 μM of Hg(2+) ions (i.e., 200 ppb), and sensitivity of 0.072 nm μM(-1)), chemical selectivity (i.e., exposure to different metal ions Co(2+), Mg(2+), Ni(2+), Cu(2+), Pb(2+), Fe(3+), Ca(2+), Cr(6+), and Ag(+)) and metal ions binding mechanism (i.e., fitting to Langmuir and Freundlich isotherm models). Furthermore, the detection of Hg(2+) ions in tap and environmental water (River Torrens) is successfully carried out, demonstrating the suitability of this system for developing environmental point-of-analysis systems. | - |
dc.description.statementofresponsibility | Tushar Kumeria, Mohammad Mahbubur Rahman, Abel Santos, Josep Ferr-Borrull, Llus F. Marsal, and Dusan Losic | - |
dc.language.iso | en | - |
dc.publisher | American Chemical Society | - |
dc.rights | © 2014 American Chemical Society | - |
dc.source.uri | http://dx.doi.org/10.1021/am502882d | - |
dc.subject | Nanoporous anodic alumina; reflection spectroscopy; optical rugate filters; mercury ions; selective surface chemistry; environmental water | - |
dc.title | Nanoporous anodic alumina rugate filters for sensing of ionic mercury: toward environmental point-of-analysis systems | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1021/am502882d | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Santos, A. [0000-0002-5081-5684] | - |
dc.identifier.orcid | Losic, D. [0000-0002-1930-072X] | - |
Appears in Collections: | Aurora harvest 7 Chemical Engineering publications |
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