Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 한성환 | - |
dc.date.accessioned | 2016-08-30T05:24:42Z | - |
dc.date.available | 2016-08-30T05:24:42Z | - |
dc.date.issued | 2015-03 | - |
dc.identifier.citation | ANALYTICAL METHODS, v. 7, NO 6, Page. 2547-2553 | en_US |
dc.identifier.issn | 1759-9660 | - |
dc.identifier.issn | 1759-9679 | - |
dc.identifier.uri | http://pubs.rsc.org/en/Content/ArticleLanding/2015/AY/C4AY03048F#!divAbstract | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/22858 | - |
dc.description.abstract | Herein, we have demonstrated a simple, ultrasensitive and highly specific colorimetric assay for the detection of sulfide ions (S2-) based on the aggregation of nanoparticles via electrostatic interaction of a surface capped gold nanoparticles with S2- in aqueous media. Cetylpyridinium bromide capped gold nanoparticles (CPB-AuNPs) were synthesized by a borohydride chemical reduction method and further characterized using UV-visible and fluorescence spectroscopy, transmission electron microscopy (TEM), dynamic light scattering (DLS) and zeta potential measurements. The change in color from red to purple immediately after the addition of S2- in the solution of CPB-AuNPs was first monitored by the naked eye and then by UV-vis spectroscopy to construct calibration plot for practical applications. Under the optimized circumstances, a plot of [(A(0) - A)/A] versus the concentrations of S2- was linear over the range of 0.01-1.0 mu g mL(-1) with a correlation coefficient of 0.9952. The developed method also shows excellent selectivity towards S2- by a factor of 20-fold or more relative to sixteen interfering ions that were tested. The probe offers a low limit of detection (LOD) up to 0.0013 mu g mL(-1) (40.6 nM), which is much lower (about 400-fold) than the maximum level (0.5 mu g mL(-1) or 15 625 nM) of S2- in drinking water permitted by the World Health Organization (WHO). Moreover, our results demonstrate the practical applicability of the probe for S2- sensing in environmental water samples without pretreatment or use of a masking agent. Therefore, the proposed scheme could be a good alternative means for onsite and real time screening of S2-. | en_US |
dc.description.sponsorship | UGC New Delhi DST-FIST | en_US |
dc.language.iso | en | en_US |
dc.publisher | ROYAL SOC CHEMISTRY | en_US |
dc.subject | GOLD NANOPARTICLES | en_US |
dc.subject | HYDROGEN-SULFIDE | en_US |
dc.subject | FLUORESCENCE | en_US |
dc.subject | SULFUR | en_US |
dc.subject | NANOCLUSTERS | en_US |
dc.subject | ABSORPTION | en_US |
dc.subject | PROBE | en_US |
dc.subject | SENSOR | en_US |
dc.subject | ANION | en_US |
dc.subject | HG2+ | en_US |
dc.title | Ultrasensitive, highly specific, colorimetric recognition of sulfide ions [S2-] in aqueous media: applications to environmental analysis | en_US |
dc.type | Article | en_US |
dc.relation.no | 6 | - |
dc.relation.volume | 7 | - |
dc.identifier.doi | 10.1039/c4ay03048f | - |
dc.relation.page | 2547-2553 | - |
dc.relation.journal | ANALYTICAL METHODS | - |
dc.contributor.googleauthor | Kondekar, Uttam R. | - |
dc.contributor.googleauthor | Walekar, Laxman S. | - |
dc.contributor.googleauthor | Gore, Anil H. | - |
dc.contributor.googleauthor | Anbhule, Prashant V. | - |
dc.contributor.googleauthor | Han, Sung H. | - |
dc.contributor.googleauthor | Patil, Shivajirao R. | - |
dc.contributor.googleauthor | Kolekar, Govind B. | - |
dc.relation.code | 2015006710 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF CHEMISTRY | - |
dc.identifier.pid | shhan | - |
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