Fluorescence detection of Zinc oxide nanoparticles in water contamination analysis based on surface reactivity with porphyrin
A simple rapid analytical method for determining the concentration of ZnO nanoparticles in aqueous dispersion has been developed by adding porphyrin (TCPP) as a fluorophore into the water sample for fluorescence analysis. Quenching of the emission intensity at 650 nm provides a Stern-Volmer plot wit...
| Main Authors: | , |
|---|---|
| Formato: | Artigo |
| Idioma: | English |
| Publicado: |
AIMS Press
2018-03-01
|
| Series: | AIMS Environmental Science |
| Subjects: | |
| Acceso en liña: | http://www.aimspress.com/environmental/article/1905/fulltext.html |
| Summary: | A simple rapid analytical method for determining the concentration of ZnO nanoparticles in aqueous dispersion has been developed by adding porphyrin (TCPP) as a fluorophore into the water sample for fluorescence analysis. Quenching of the emission intensity at 650 nm provides a Stern-Volmer plot with adequate sensitivity for the detection of ZnO nanoparticles from 0.15 mg/mL up to 1.5 mg/mL. A new emission peak at 605 nm can be attributed to the formation of a unique ZnO-TCPP complex. This unique emission peak is good for both identification and quantitation of ZnO nanoparticles at low concentrations down to 0.0015 mg/mL. The new method affords a linear dynamic range up to 1.2 mg/mL. |
|---|---|
| ISSN: | 2372-0352 |