Yunjia YANG, Yiqian WU, Jing PENG, Maolin ZHAI, Jiuqiang LI. Reaction rate constant of phosphate esters with hydroxyl radicals investigated using fluorescence probe method[J]. Journal of Radiation Research and Radiation Processing, 2024, 42(6): 060210
Journals >Journal of Radiation Research and Radiation Processing >Volume 42 >Issue 6 >Page 060210 > Article
- Journal of Radiation Research and Radiation Processing
- Vol. 42, Issue 6, 060210 (2024)
Fig. 1. Structural formulas of coumarin and 7-hydroxycoumarin
Fig. 2. Fluorescence spectra of 7OHC solutions with different concentrations (a) and corresponding standard curve (452 nm) (b) (color online)
Fig. 3. Fluorescence spectra of TBP (a) and TiAP (b) aqueous solutions with different concentrations after γ-irradiation under N2 atmosphere (color online)
Fig. 4. Concentration of 7OHC produced in TBP (a) and TiAP (b) aqueous solutions as a function of absorbed dose;G(7OHC) of TBP (c) and TiAP (d) aqueous solutions with various concentrations
Fig. 5. Mechanism of reaction between phosphates and hydroxyl radicals in aqueous solution: H abstraction or •OH addition; CxHy and R represent n-butyl (for TBP) or isopentyl (for TiAP)
Fig. 6. Relationship between the concentration ratio of TBP (a) and TiAP (b) to coumarin and G value ratio of 7-hydroxycoumarin
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