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uorometric quanti fi cation in aqueous media using di ff erent surfactants as fl uorescence promoters †
| Content Provider | Semantic Scholar |
|---|---|
| Author | Alva-Ensastegui, J. C. Palomar-Pardavé, Manuel Romero-Romo, Mario |
| Copyright Year | 2018 |
| Abstract | Quercetin spectrofluorometric quantification was carried out in aqueous media (pH 7) using micelles of surfactants, namely: CTAB, SDS and TX100 as promoters of quercetin fluorescence, having a critical micelle concentration, CMC, of: 0.94 0.03, 7.7 0.6 and 0.18 0.3 mM, respectively, measured through UV-Vis spectrophotometry. The thermodynamic binding constant, K, for the quercetinsurfactants' micelles supramolecular complex was estimated to be (log(K/M )) 1⁄4 2.87 0.02, 2.78 0.04 and 2.80 0.04, respectively, from fluorescence spectrophotometry. With the aid of these parameters it was possible to construct species distribution diagrams and choose the experimental conditions where quercetin can be quantified in aqueous media from fluorescence measurements. The best lowest limit of detection (0.244 0.092) mM was achieved with CTAB micelles while the best sensitivity (2.919 0.054) M 1 corresponded to SDS. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://pubs.rsc.org/en/content/articlepdf/2018/ra/c8ra01213j |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
