| Autor: |
Rachid Ismail, Joy H. Tannous |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Case Studies in Chemical and Environmental Engineering, Vol 10, Iss , Pp 100932- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2666-0164 |
| DOI: |
10.1016/j.cscee.2024.100932 |
| Popis: |
The effect of storage time and solvent on 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical stability was studied using electron spin resonance. Tetrahydrofuran affected the g-factor due to a rearrangement within the DPPH structure that changed the radical centre. There was also a change in the spins concentration when modifying the solvent and storage times. The more than 96 % decrease in spins after 12 weeks, consistent with a change in the pH and color, was attributed to the electron- and hydrogen-donor capabilities of the solvents, leading to a shift among the different DPPH ionic states. Tetralin instantly interacted with the DPPH capping many radicals. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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