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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Jamil, Arniza K. M. Izake, Emad L. Agoston, Roland Sivanesan, Arumugam Ayoko, Godwin A. |
| Copyright Year | 2015 |
| Abstract | A facile and sensitive surface-enhanced Raman scattering substrate was prepared by controlled potentiostatic deposition of a closely packed single layer of gold nanostructures (AuNS) over a flat gold (pAu) platform. The nanometer scale inter-particle distance between the particles resulted in high population of ‘hot spots’ which enormously enhanced the scattered Raman photons. A renewed methodology was followed to precisely quantify the SERS substrate enhancement factor (SSEF) and it was estimated to be (2.2 ± 0.17) × 105. The reproducibility of the SERS signal acquired by the developed substrate was tested by establishing the relative standard deviation (RSD) of 150 repeated measurements from various locations on the substrate surface. A low RSD of 4.37 confirmed the homogeneity of the developed substrate. The sensitivity of pAu/AuNS was proven by determining 100 fM 2,4,6-trinitrotoluene (TNT) comfortably. As a proof of concept on the potential of the new pAu/AuNS substrate in field analysis, TNT in soil and water matrices was selectively detected after forming a Meisenheimer complex with cysteamine. |
| Starting Page | 3863 |
| Ending Page | 3868 |
| Page Count | 6 |
| File Format | HTM / HTML PDF |
| ISSN | 17599660 |
| Volume Number | 7 |
| Issue Number | 9 |
| Journal | Analytical Methods |
| DOI | 10.1039/c5ay00739a |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Section Paloise SERS Trinitrotoluene Surface-enhanced Raman spectroscopy Cysteamine Nanometre TNT Coefficient of variation Meisenheimer complex |
| Content Type | Text |
| Resource Type | Article |
| Subject | Analytical Chemistry Engineering Chemical Engineering |
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