Publication Details |
Category | Text Publication |
Reference Category | Journals |
DOI | 10.1016/j.scitotenv.2019.01.003 |
Title (Primary) | Carbon and hydrogen isotopic fractionation during abiotic hydrolysis and aerobic biodegradation of phthalate esters |
Author | Zhang, D.; Wu, L.; Yao, J.; Vogt, C.; Richnow, H.-H. |
Source Titel | Science of the Total Environment |
Year | 2019 |
Department | ISOBIO |
Volume | 660 |
Page From | 559 |
Page To | 566 |
Language | englisch |
Keywords | Phthalate esters; Hydrolysis; Aerobic biodegradation; Isotopic fractionation; Compound specific isotope analysis |
Abstract | We systematically investigated the changes of carbon and hydrogen isotope signatures of three phthalate esters (PAEs) during (i) abiotic hydrolysis over the pH range of 2, 7 and 10, and (ii) aerobic biodegradation initiated by hydrolysis by Rhodococcus opacus strain DSM 43250. Significant carbon isotopic fractionation was exhibited under all investigated conditions. Hydrogen isotopic fractionation was observed in some experiments and is hypothesized to be a secondary isotope effect due to the absence of a hydrogen bond cleavage during hydrolysis. Dual stable isotope analysis (Λ = Δδ2H/Δδ13C) resulting from abiotic hydrolysis and aerobic biodegradation showed similar magnitudes for dimethyl phthalate (DMP) and diethyl phthalate (DEP). The calculated carbon apparent kinetic isotope effects (AKIEC) for the hydrolytic pathway (C |
Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=21304 |
Zhang, D., Wu, L., Yao, J., Vogt, C., Richnow, H.-H. (2019): Carbon and hydrogen isotopic fractionation during abiotic hydrolysis and aerobic biodegradation of phthalate esters Sci. Total Environ. 660 , 559 - 566 10.1016/j.scitotenv.2019.01.003 |