Long-term field study on fate, transformation, and vertical transport of tetrabromobisphenol A in soil–plant systems
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Authors
Author (Corporation)
Publication date
21.03.2021
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Type
01A - Journal article
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Parent work
Environmental Science & Technology
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Series
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Volume
55
Issue / Number
8
Pages / Duration
4607-4615
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Publisher / Publishing institution
American Chemical Society
Place of publication / Event location
Washington
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Abstract
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.
Keywords
Plants, Plant derived food, Soils, Metabolism, Layers
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ISBN
ISSN
1520-5851
0013-936X
0013-936X
Language
English
Created during FHNW affiliation
Yes
Strategic action fields FHNW
Publication status
Published
Review
Peer review of the complete publication
Open access category
Closed
License
Citation
Corvini, P., Songfeng, W., Xuan, W., Rong, G., Wang, Q., Guo, H., Sun, F., & Ji, R. (2021). Long-term field study on fate, transformation, and vertical transport of tetrabromobisphenol A in soil–plant systems. Environmental Science & Technology, 55(8), 4607–4615. https://doi.org/10.1021/acs.est.0c04021