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Long-term field study on fate, transformation, and vertical transport of tetrabromobisphenol A in soil–plant systems

Autor/Autorin
Corvini, Philippe
Songfeng, Wang
Xuan, Wu
Rong, Guo
Wang, Qilin
Guo, Hongyan
Sun, Feifei
Ji, Rong
Datum
21.03.2021
Metadata
Zur Langanzeige
Type
01 - Zeitschriftenartikel, Journalartikel oder Magazin
Zusammenfassung
Soil contamination with tetrabromobisphenol A (TBBPA) has been an environmental concern for many years, but in situ studies of the fate and potential risk of TBBPA are lacking. In this study, we investigated the dissipation, metabolism, strong alkali-hydrolytic (SAH-TBBPA), and vertical movement of TBBPA in the field with and without rice-wheat rotation and reed growth for 1225 days. After 342 days of incubation, 21.3% of the TBBPA remained in the surface soil accompanied by obvious leaching to deeper soil layers in the first 92 days. By day 1225, TBBPA was nearly absent from the surface soil layer. A very low amount of SAH-TBBPA (2.31–3.43 mg/kg) was detected during the first 342 days of incubation. In the surface soil, five metabolites were identified that represented four interconnected pathways: oxidative skeletal cleavage, O-methylation, type II ipso-substitution, and reductive debromination. Both rice–wheat rotation and monocultural reed growth accelerated TBBPA removal in the field by stimulating the anaerobic debromination and aerobic O-methylation, especially the oxidative skeletal cleavage of TBBPA in the rhizosphere soil. Though far from comprehensive, our study investigated the natural attenuation and metabolism of TBBPA in situ and the influence by crops to estimate the environmental risk of TBBPA in a field scale.
URI
https://irf.fhnw.ch/handle/11654/33345
DOI der Originalausgabe
https://doi.org/10.1021/acs.est.0c04021
Übergeordnetes Werk
Environmental Science & Technology
Jahrgang
55
Ausgabe
8
Seiten
4607-4615
Verlag / Hrsg. Institution
American Chemical Society
Verlagsort / Veranstaltungsort
Washington
Zitation

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