Reaction rate constant of phosphate esters with hydroxyl radicals investigated using fluorescence probe method
The strong fluorescence of 7-hydroxycoumarin yielded by the reaction of coumarin with hydroxyl radicals (•OH) was used as a fluorescent probe to determine the yield of 7-hydroxycoumarin aqueous solutions with different concentrations of TBP and TiAP after gamma ray irradiation. The reaction rate con...
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| Format: | Article |
| Language: | zho |
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Science Press
2024-12-01
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| Series: | Fushe yanjiu yu fushe gongyi xuebao |
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| Online Access: | https://www.fs.sinap.ac.cn/zh/article/doi/10.11889/j.1000-3436.2024-0091/ |
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| author | YANG Yunjia WU Yiqian PENG Jing ZHAI Maolin LI Jiuqiang |
| author_facet | YANG Yunjia WU Yiqian PENG Jing ZHAI Maolin LI Jiuqiang |
| author_sort | YANG Yunjia |
| collection | DOAJ |
| description | The strong fluorescence of 7-hydroxycoumarin yielded by the reaction of coumarin with hydroxyl radicals (•OH) was used as a fluorescent probe to determine the yield of 7-hydroxycoumarin aqueous solutions with different concentrations of TBP and TiAP after gamma ray irradiation. The reaction rate constants of TBP and TiAP with •OH at room temperature were determined via pseudo-first order kinetic fitting (kTBP= (9.0 ± 0.2) ×109 L/（mol·s） and kTiAP= (5.3 ± 0.2) ×109 L/（mol·s）), respectively. Owing to the stronger hydrophobicity of TiAP compared with that of TBP, its reaction rate constant with •OH is lower than that of TBP, thus resulting in a higher yield of •OH in the TiAP solution compared to the TBP solution with the same concentration. This study provides a simple, convenient and efficient method for investigating the reactions between extractants and •OH. |
| format | Article |
| id | doaj-art-1ee5e27fc5fe4e6daf22f9fb9467dd7f |
| institution | DOAJ |
| issn | 1000-3436 |
| language | zho |
| publishDate | 2024-12-01 |
| publisher | Science Press |
| record_format | Article |
| series | Fushe yanjiu yu fushe gongyi xuebao |
| spelling | doaj-art-1ee5e27fc5fe4e6daf22f9fb9467dd7f2025-08-20T02:56:30ZzhoScience PressFushe yanjiu yu fushe gongyi xuebao1000-34362024-12-0142606021006021010.11889/j.1000-3436.2024-00911000-3436（2024）06-0154-08Reaction rate constant of phosphate esters with hydroxyl radicals investigated using fluorescence probe methodYANG Yunjia0WU Yiqian1PENG Jing2ZHAI Maolin3LI Jiuqiang4Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing100871, ChinaRadiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing100871, ChinaRadiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing100871, ChinaRadiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing100871, ChinaRadiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing100871, ChinaThe strong fluorescence of 7-hydroxycoumarin yielded by the reaction of coumarin with hydroxyl radicals (•OH) was used as a fluorescent probe to determine the yield of 7-hydroxycoumarin aqueous solutions with different concentrations of TBP and TiAP after gamma ray irradiation. The reaction rate constants of TBP and TiAP with •OH at room temperature were determined via pseudo-first order kinetic fitting (kTBP= (9.0 ± 0.2) ×109 L/（mol·s） and kTiAP= (5.3 ± 0.2) ×109 L/（mol·s）), respectively. Owing to the stronger hydrophobicity of TiAP compared with that of TBP, its reaction rate constant with •OH is lower than that of TBP, thus resulting in a higher yield of •OH in the TiAP solution compared to the TBP solution with the same concentration. This study provides a simple, convenient and efficient method for investigating the reactions between extractants and •OH.https://www.fs.sinap.ac.cn/zh/article/doi/10.11889/j.1000-3436.2024-0091/coumarin fluorescent probehydroxyl radicalgamma irradiationextractantreaction rate constant |
| spellingShingle | YANG Yunjia WU Yiqian PENG Jing ZHAI Maolin LI Jiuqiang Reaction rate constant of phosphate esters with hydroxyl radicals investigated using fluorescence probe method Fushe yanjiu yu fushe gongyi xuebao coumarin fluorescent probe hydroxyl radical gamma irradiation extractant reaction rate constant |
| title | Reaction rate constant of phosphate esters with hydroxyl radicals investigated using fluorescence probe method |
| title_full | Reaction rate constant of phosphate esters with hydroxyl radicals investigated using fluorescence probe method |
| title_fullStr | Reaction rate constant of phosphate esters with hydroxyl radicals investigated using fluorescence probe method |
| title_full_unstemmed | Reaction rate constant of phosphate esters with hydroxyl radicals investigated using fluorescence probe method |
| title_short | Reaction rate constant of phosphate esters with hydroxyl radicals investigated using fluorescence probe method |
| title_sort | reaction rate constant of phosphate esters with hydroxyl radicals investigated using fluorescence probe method |
| topic | coumarin fluorescent probe hydroxyl radical gamma irradiation extractant reaction rate constant |
| url | https://www.fs.sinap.ac.cn/zh/article/doi/10.11889/j.1000-3436.2024-0091/ |
| work_keys_str_mv | AT yangyunjia reactionrateconstantofphosphateesterswithhydroxylradicalsinvestigatedusingfluorescenceprobemethod AT wuyiqian reactionrateconstantofphosphateesterswithhydroxylradicalsinvestigatedusingfluorescenceprobemethod AT pengjing reactionrateconstantofphosphateesterswithhydroxylradicalsinvestigatedusingfluorescenceprobemethod AT zhaimaolin reactionrateconstantofphosphateesterswithhydroxylradicalsinvestigatedusingfluorescenceprobemethod AT lijiuqiang reactionrateconstantofphosphateesterswithhydroxylradicalsinvestigatedusingfluorescenceprobemethod |