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231226s2024 xx |||||o 00| ||eng c |
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|a 10.1080/09593330.2022.2102937
|2 doi
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|a pubmed24n1253.xml
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|a (DE-627)NLM343588684
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|a (NLM)35838616
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Liu, Yiqing
|e verfasserin
|4 aut
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| 245 |
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|a Effect of bicarbonate on nitrate-induced photosensitive degradation of sulfamethoxazole under UV irradiation
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 09.01.2024
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|a Date Revised 09.01.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a In this study, the influence of HCO3- on NO3--induced photosensitive degradation of sulfamethoxazole (SMX) under UV irradiation was investigated. It was found that the removal of SMX by UV in the presence of NO3- improved significantly compared to its photolysis, which was confirmed to be due to the role of hydroxyl radical (HO•) formed through UV-activated NO3-. However, the addition of HCO3- in UV/NO3- system could further enhance SMX degradation, which was verified to be ascribed to the formed carbonate radical (CO3•-) through the reaction of HCO3- with HO•. The second-order rate constant of CO3•- with SMX was determined to be 2.58 × 108 M-1 s-1. In UV/NO3-/HCO3- system, the reactive species for SMX removal were HO• and CO3•-, and the contribution of CO3•- to SMX degradation might be much higher than that of HO•. The concentration of NO3- was almost unchanged after reaction in UV/NO3- and UV/NO3-/HCO3- systems because of its regeneration. Based on the detected four transformation products, the possible degradation pathways of SMX in UV/NO3-/HCO3- system were proposed including hydroxylation, amino-oxidation and bond cleavage
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|a Journal Article
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|a Sulfamethoxazole
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|a bicarbonate
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|a carbonate radical
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|a hydroxyl radical
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|a nitrate photolysis
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|a Bicarbonates
|2 NLM
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|a Sulfamethoxazole
|2 NLM
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|a JE42381TNV
|2 NLM
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| 650 |
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|a Nitrates
|2 NLM
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| 650 |
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|a Water Pollutants, Chemical
|2 NLM
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| 700 |
1 |
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|a Wang, Shixiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Fu, Dongbin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Fu, Yongsheng
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Environmental technology
|d 1993
|g 45(2024), 1 vom: 22. Jan., Seite 170-179
|w (DE-627)NLM098202545
|x 1479-487X
|7 nnns
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| 773 |
1 |
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|g volume:45
|g year:2024
|g number:1
|g day:22
|g month:01
|g pages:170-179
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|u http://dx.doi.org/10.1080/09593330.2022.2102937
|3 Volltext
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