Publication Details |
| Reference Category | Journals |
| DOI / URL | link |
| Document | author version |
| Title (Primary) | Carbon and hydrogen stable isotope analysis for characterizing the chemical degradation of tributyl phosphate |
| Author | Liu, J.; Wu, L.; Kümmel, S.; Yao, J.; Schaefer, T.; Herrmann, H.; Richnow, H.-H. |
| Journal | Chemosphere |
| Year | 2018 |
| Department | ISOBIO |
| Volume | 212 |
| Page From | 133 |
| Page To | 142 |
| Language | englisch |
| Keywords | Tributyl phosphate; Isotope fractionation; Hydrolysis; Radical oxidation; Apparent kinetic isotope effect |
| Abstract | Tributyl phosphate (TBP) belongs to the group of trialkyl substituted organophosphate esters. Its chemical reactivity depends on the stability of various chemical bonds. TBP was used as a model compound for the development of a concept using stable isotope fractionation associated with bond cleavage reactions for better understanding the fate of TBP in the environment. Carbon isotope enrichment factors (εC) of TBP hydrolysis were found to be pH dependent (−3.8 ± 0.3‰ at pH 2, -4.6 ± 0.5‰ at pH 7, -2.8 ± 0.1‰ at pH 9, no isotope fractionation at pH 12), which is in accordance with the mode of a SN2 hydrolytic bond cleavage. Hydrogen isotope fractionation was negligible as no H bond cleavage is involved during hydrolysis. The apparent carbon kinetic isotope effect (AKIEC) ranged from 1.045 to 1.058. In contrast to hydrolysis, both carbon and hydrogen isotope fractionation were observed during radical oxidation of TBP by |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=20781 |
| Liu, J., Wu, L., Kümmel, S., Yao, J., Schaefer, T., Herrmann, H., Richnow, H.-H. (2018): Carbon and hydrogen stable isotope analysis for characterizing the chemical degradation of tributyl phosphate Chemosphere 212 , 133 - 142 |
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