Multiple Metabolic Pathways of 2,4,6-Tribromophenol in Rice Plants
文献类型：期刊论文
| 作者 | Zhang, Qing; Liu, Yanwei ; Lin, Yonfeng; Kong, Wenqian; Zhao, Xingchen; Ruan, Ting; Liu, Jiyan; Schnoor, Jerald L.; Jiang, Guibin
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| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
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| 出版日期 | 2019-07-02 |
| 卷号 | 53期号:13页码:7473-7482 |
| ISSN号 | 0013-936X |
| 英文摘要 | Bromophenols occur naturally and are used globally as man-made additives in various industrial products. They are decomposition products of many emerging organic pollutants, such as tetrabromobisphenol A, polybrominated dibenzo-p-dioxin (PBDD), polybrominated diphenyl ethers (PBDE), and others. To characterize their biotransformation pathways, bromophenol congener 2,4,6-tribromophenol, being used most frequently in the synthesis of brominated flame retardants and having the greatest environmental abundance, was selected to hydroponically expose rice plants. After exposure for 5 days, 99.2% of 2,4,6-tribromophenol was metabolized by rice. Because of the lack of relative reference standards, an effective screening strategy was used to screen for potential metabolites that were further qualitatively identified by gas and liquid chromatography combined with highresolution mass spectrometry. Forty transformation products were confirmed or tentatively identified at different confidence levels, including 9 phase I and 31 phase II metabolites. A large number of metabolites (39) were found in rice root, and 10 of them could be translocated and detected in rice stems or leaves. Many transformation pathways were proposed, including debromination, hydroxylation, methylation, coupling reactions, sulfation, and glycosylation. It was remarkable that a total of seven hydrophobic, persistent, and toxic OH-PBDEs and PBDD/Fs were found, indicating the biotic dimeric reactions of 2,4,6-tribromophenol that occurred in the rice plants. These results improve our understanding of the transformation and environmental fates of bromophenols, and they indicate new potential sources for OH-PBDEs and PBDD/Fs in the environment, especially in food chains. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/42982]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.Univ Iowa, Dept Civil & Environm Engn, Iowa City, IA 52242 USA 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Qing,Liu, Yanwei,Lin, Yonfeng,et al. Multiple Metabolic Pathways of 2,4,6-Tribromophenol in Rice Plants[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2019,53(13):7473-7482. |
| APA | Zhang, Qing.,Liu, Yanwei.,Lin, Yonfeng.,Kong, Wenqian.,Zhao, Xingchen.,...&Jiang, Guibin.(2019).Multiple Metabolic Pathways of 2,4,6-Tribromophenol in Rice Plants.ENVIRONMENTAL SCIENCE & TECHNOLOGY,53(13),7473-7482. |
| MLA | Zhang, Qing,et al."Multiple Metabolic Pathways of 2,4,6-Tribromophenol in Rice Plants".ENVIRONMENTAL SCIENCE & TECHNOLOGY 53.13(2019):7473-7482. |
入库方式： OAI收割
来源：生态环境研究中心
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