Quantifying hydroxyl radicals generated by a low-temperature plasma using coumarin: methodology and precautions
The detection and quantification of hydroxyl radicals (HO&z.rad;) generated by low-temperature plasmas (LTPs) are crucial for understanding their role in diverse applications of plasma radiation. In this study, the formation of HO&z.rad; in the irradiated aqueous phase is investigated at var...
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| Veröffentlicht in: | Physical chemistry chemical physics : PCCP 2024-03, Vol.26 (11), p.8651-8657 |
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| container_title | Physical chemistry chemical physics : PCCP |
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| creator | Ducrozet, Florent Sebastian, Amal Garcia Villavicencio, Cecilia Julieta Ptasinska, Sylwia Sicard-Roselli, Cécile |
| description | The detection and quantification of hydroxyl radicals (HO&z.rad;) generated by low-temperature plasmas (LTPs) are crucial for understanding their role in diverse applications of plasma radiation. In this study, the formation of HO&z.rad; in the irradiated aqueous phase is investigated at various plasma parameters, by probing them indirectly using the coumarin molecule. We propose a quantification methodology for these radicals, combining spectrophotometry to study the coumarin reaction with hydroxyl radicals and fluorimetry to evaluate the formation yield of the hydroxylated product, 7-hydroxycoumarin. Additionally, we thoroughly examine and discuss the impact of pH on this quantification process. This approach enhances our comprehension of HO&z.rad; formation during LTP irradiation, adding valuable insights to plasma's biological applications.
The detection and quantification of hydroxyl radicals (HO&z.rad;) generated by low-temperature plasmas (LTPs) are crucial for understanding their role in diverse applications of plasma radiation. |
| doi_str_mv | 10.1039/d4cp00040d |
| format | Article |
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| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Chemical Sciences Coumarin Fluorimetry Hydroxyl radicals Irradiation Low temperature Plasma radiation Spectrophotometry |
| title | Quantifying hydroxyl radicals generated by a low-temperature plasma using coumarin: methodology and precautions |
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