| Full text | |
| Author(s): |
Setti, G. O.
;
Joanni, E.
;
Poppi, R. J.
;
dos Santos, D. P.
;
de Jesus, D. P.
Total Authors: 5
|
| Document type: | Journal article |
| Source: | ANALYST; v. 141, n. 17, p. 5071-5077, 2016. |
| Web of Science Citations: | 1 |
| Abstract | |
In this communication, we report one factor that could limit the quantitative analysis by SERS, which has not yet been discussed in the literature. Our results show that SERS experiments performed with the substrate immersed in liquid solutions are subjected to a temporal drift in the Raman signal intensity. Measurements were performed using gold nanoparticle suspensions and gold-covered nanostructured ITO surfaces as SERS substrates, immersed in analyte solutions of crystal violet and 4-mercaptobenzoic acid. Depending on the substrate and the conditions used for measurements, the Raman signal can take between 30 min and several hours to stabilize. This effect, if not taken into account, could have a negative impact on the results of the quantitative chemical analysis by SERS performed in situ in liquid solutions. (AU) | |
| FAPESP's process: | 13/22485-6 - Development and application of electromembrane extraction in capillary electrophoresis methods |
| Grantee: | Dosil Pereira de Jesus |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 13/25108-9 - Fabrication of nanostrucuted substrates for application in surface enhanced Raman Scattering |
| Grantee: | Grazielle de Oliveira Setti Gibin |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 13/22127-2 - Development of novel materials strategic for integrated analytical devices |
| Grantee: | Lauro Tatsuo Kubota |
| Support Opportunities: | Research Projects - Thematic Grants |